diff --git a/BurnOutSharp/FileType/Executable.cs b/BurnOutSharp/FileType/Executable.cs
index d1c7047d..198fc83f 100644
--- a/BurnOutSharp/FileType/Executable.cs
+++ b/BurnOutSharp/FileType/Executable.cs
@@ -12,7 +12,7 @@ namespace BurnOutSharp.FileType
         /// <summary>
         /// Cache for all IContentCheck types
         /// </summary>
-        private static IEnumerable<IContentCheck> contentCheckClasses = InitContentCheckClasses();
+        private static readonly IEnumerable<IContentCheck> contentCheckClasses = InitContentCheckClasses();
 
         /// <inheritdoc/>
         public bool ShouldScan(byte[] magic)
diff --git a/BurnOutSharp/PackerType/AdvancedInstaller.cs b/BurnOutSharp/PackerType/AdvancedInstaller.cs
index 62de0ad0..f204d8f7 100644
--- a/BurnOutSharp/PackerType/AdvancedInstaller.cs
+++ b/BurnOutSharp/PackerType/AdvancedInstaller.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Software\Caphyon\Advanced Installer
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/PackerType/Armadillo.cs b/BurnOutSharp/PackerType/Armadillo.cs
index dd9f69b9..4b1014ab 100644
--- a/BurnOutSharp/PackerType/Armadillo.cs
+++ b/BurnOutSharp/PackerType/Armadillo.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // .nicode + (char)0x00
             new ContentMatchSet(new byte?[] { 0x2E, 0x6E, 0x69, 0x63, 0x6F, 0x64, 0x65, 0x00 }, "Armadillo"),
diff --git a/BurnOutSharp/PackerType/CExe.cs b/BurnOutSharp/PackerType/CExe.cs
index f64c1473..325c0808 100644
--- a/BurnOutSharp/PackerType/CExe.cs
+++ b/BurnOutSharp/PackerType/CExe.cs
@@ -11,7 +11,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // %Wo�a6.�a6.�a6.�a6.�{6.�.).�f6.��).�`6.��0.�`6.�
             new ContentMatchSet(
diff --git a/BurnOutSharp/PackerType/EXEStealth.cs b/BurnOutSharp/PackerType/EXEStealth.cs
index 36294e6d..ac63fde4 100644
--- a/BurnOutSharp/PackerType/EXEStealth.cs
+++ b/BurnOutSharp/PackerType/EXEStealth.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // ??[[__[[_ + (char)0x00 + {{ + (char)0x0 + (char)0x00 + {{ + (char)0x00 + (char)0x00 + (char)0x00 + (char)0x00 + (char)0x0 + (char)0x00 + (char)0x00 + (char)0x00 + (char)0x00 + ?;??;??
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/PackerType/InnoSetup.cs b/BurnOutSharp/PackerType/InnoSetup.cs
index 03a82206..493b06ff 100644
--- a/BurnOutSharp/PackerType/InnoSetup.cs
+++ b/BurnOutSharp/PackerType/InnoSetup.cs
@@ -11,7 +11,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Inno
             new ContentMatchSet(
diff --git a/BurnOutSharp/PackerType/NSIS.cs b/BurnOutSharp/PackerType/NSIS.cs
index 475f67aa..25b85960 100644
--- a/BurnOutSharp/PackerType/NSIS.cs
+++ b/BurnOutSharp/PackerType/NSIS.cs
@@ -11,7 +11,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Nullsoft Install System
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/PackerType/SetupFactory.cs b/BurnOutSharp/PackerType/SetupFactory.cs
index ffbf6172..6297be0d 100644
--- a/BurnOutSharp/PackerType/SetupFactory.cs
+++ b/BurnOutSharp/PackerType/SetupFactory.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // S.e.t.u.p. .F.a.c.t.o.r.y.
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/PackerType/UPX.cs b/BurnOutSharp/PackerType/UPX.cs
index 31c4db92..b7c39549 100644
--- a/BurnOutSharp/PackerType/UPX.cs
+++ b/BurnOutSharp/PackerType/UPX.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // UPX!
             new ContentMatchSet(new byte?[] { 0x55, 0x50, 0x58, 0x21 }, GetVersion, "UPX"),
diff --git a/BurnOutSharp/PackerType/WinRARSFX.cs b/BurnOutSharp/PackerType/WinRARSFX.cs
index 0cba62df..8d98b335 100644
--- a/BurnOutSharp/PackerType/WinRARSFX.cs
+++ b/BurnOutSharp/PackerType/WinRARSFX.cs
@@ -12,7 +12,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Software\WinRAR SFX
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/PackerType/dotFuscator.cs b/BurnOutSharp/PackerType/dotFuscator.cs
index e430bec7..b82c42cc 100644
--- a/BurnOutSharp/PackerType/dotFuscator.cs
+++ b/BurnOutSharp/PackerType/dotFuscator.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.PackerType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // DotfuscatorAttribute
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/ActiveMARK.cs b/BurnOutSharp/ProtectionType/ActiveMARK.cs
index 0274ac62..ae57d777 100644
--- a/BurnOutSharp/ProtectionType/ActiveMARK.cs
+++ b/BurnOutSharp/ProtectionType/ActiveMARK.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // TMSAMVOF
             new ContentMatchSet(new byte?[] { 0x54, 0x4D, 0x53, 0x41, 0x4D, 0x56, 0x4F, 0x46 }, "ActiveMARK"),
diff --git a/BurnOutSharp/ProtectionType/AlphaROM.cs b/BurnOutSharp/ProtectionType/AlphaROM.cs
index 319fd4db..07e36807 100644
--- a/BurnOutSharp/ProtectionType/AlphaROM.cs
+++ b/BurnOutSharp/ProtectionType/AlphaROM.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // SETTEC
             new ContentMatchSet(new byte?[] { 0x53, 0x45, 0x54, 0x54, 0x45, 0x43 }, "Alpha-ROM"),
diff --git a/BurnOutSharp/ProtectionType/CDCheck.cs b/BurnOutSharp/ProtectionType/CDCheck.cs
index 123b22de..ef5f524b 100644
--- a/BurnOutSharp/ProtectionType/CDCheck.cs
+++ b/BurnOutSharp/ProtectionType/CDCheck.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // MGS CDCheck
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/CDCops.cs b/BurnOutSharp/ProtectionType/CDCops.cs
index b1379c4f..e4f7abed 100644
--- a/BurnOutSharp/ProtectionType/CDCops.cs
+++ b/BurnOutSharp/ProtectionType/CDCops.cs
@@ -10,7 +10,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // CD-Cops,  ver. 
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/CDLock.cs b/BurnOutSharp/ProtectionType/CDLock.cs
index e838b2d1..ba0d7a77 100644
--- a/BurnOutSharp/ProtectionType/CDLock.cs
+++ b/BurnOutSharp/ProtectionType/CDLock.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // 2 + (char)0xF2 + (char)0x02 + (char)0x82 + (char)0xC3 + (char)0xBC + (char)0x0B + $ + (char)0x99 + (char)0xAD + 'C + (char)0xE4 + (char)0x9D + st + (char)0x99 + (char)0xFA + 2$ + (char)0x9D + )4 + (char)0xFF + t
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/CDSHiELDSE.cs b/BurnOutSharp/ProtectionType/CDSHiELDSE.cs
index a09d406d..49af5250 100644
--- a/BurnOutSharp/ProtectionType/CDSHiELDSE.cs
+++ b/BurnOutSharp/ProtectionType/CDSHiELDSE.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // ~0017.tmp
             new ContentMatchSet(new byte?[] { 0x7E, 0x30, 0x30, 0x31, 0x37, 0x2E, 0x74, 0x6D, 0x70 }, "CDSHiELD SE"),
diff --git a/BurnOutSharp/ProtectionType/CactusDataShield.cs b/BurnOutSharp/ProtectionType/CactusDataShield.cs
index 6ab9a9c5..30af3b18 100644
--- a/BurnOutSharp/ProtectionType/CactusDataShield.cs
+++ b/BurnOutSharp/ProtectionType/CactusDataShield.cs
@@ -12,7 +12,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // DATA.CDS
             new ContentMatchSet(new byte?[] { 0x44, 0x41, 0x54, 0x41, 0x2E, 0x43, 0x44, 0x53 }, "Cactus Data Shield 200"),
diff --git a/BurnOutSharp/ProtectionType/CengaProtectDVD.cs b/BurnOutSharp/ProtectionType/CengaProtectDVD.cs
index ec5dd5f5..9c3cd013 100644
--- a/BurnOutSharp/ProtectionType/CengaProtectDVD.cs
+++ b/BurnOutSharp/ProtectionType/CengaProtectDVD.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // .cenega
             new ContentMatchSet(new byte?[] { 0x2E, 0x63, 0x65, 0x6E, 0x65, 0x67, 0x61 }, "Cenega ProtectDVD"),
diff --git a/BurnOutSharp/ProtectionType/CodeLock.cs b/BurnOutSharp/ProtectionType/CodeLock.cs
index 2b750b28..815da25c 100644
--- a/BurnOutSharp/ProtectionType/CodeLock.cs
+++ b/BurnOutSharp/ProtectionType/CodeLock.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.ProtectionType
         /// Set of all ContentMatchSets for this protection
         /// </summary>
         /// TODO: Verify if these are OR or AND
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // icd1 + (char)0x00
             new ContentMatchSet(new byte?[] { 0x69, 0x63, 0x64, 0x31, 0x00 }, "Code Lock"),
diff --git a/BurnOutSharp/ProtectionType/CopyKiller.cs b/BurnOutSharp/ProtectionType/CopyKiller.cs
index e9af76e8..e4bb6cc8 100644
--- a/BurnOutSharp/ProtectionType/CopyKiller.cs
+++ b/BurnOutSharp/ProtectionType/CopyKiller.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Tom Commander
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/DVDCops.cs b/BurnOutSharp/ProtectionType/DVDCops.cs
index d52dc60f..47e0eea9 100644
--- a/BurnOutSharp/ProtectionType/DVDCops.cs
+++ b/BurnOutSharp/ProtectionType/DVDCops.cs
@@ -10,7 +10,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // DVD-Cops,  ver. 
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/ElectronicArts.cs b/BurnOutSharp/ProtectionType/ElectronicArts.cs
index 52b05870..3960cf01 100644
--- a/BurnOutSharp/ProtectionType/ElectronicArts.cs
+++ b/BurnOutSharp/ProtectionType/ElectronicArts.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // EASTL
             //new ContentMatchSet(new byte?[] { 0x45, 0x41, 0x53, 0x54, 0x4C }, "Cucko (EA Custom)"),
diff --git a/BurnOutSharp/ProtectionType/GFWL.cs b/BurnOutSharp/ProtectionType/GFWL.cs
index 83d4f1e3..0096f8c7 100644
--- a/BurnOutSharp/ProtectionType/GFWL.cs
+++ b/BurnOutSharp/ProtectionType/GFWL.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // xlive.dll
             new ContentMatchSet(new byte?[] { 0x78, 0x6C, 0x69, 0x76, 0x65, 0x2E, 0x64, 0x6C, 0x6C }, "Games for Windows - Live"),
diff --git a/BurnOutSharp/ProtectionType/ImpulseReactor.cs b/BurnOutSharp/ProtectionType/ImpulseReactor.cs
index d8b9dd1c..aca6e5be 100644
--- a/BurnOutSharp/ProtectionType/ImpulseReactor.cs
+++ b/BurnOutSharp/ProtectionType/ImpulseReactor.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             new ContentMatchSet(new List<byte?[]>
             {
diff --git a/BurnOutSharp/ProtectionType/Intenium.cs b/BurnOutSharp/ProtectionType/Intenium.cs
index 1eaa4c6e..6adb4c40 100644
--- a/BurnOutSharp/ProtectionType/Intenium.cs
+++ b/BurnOutSharp/ProtectionType/Intenium.cs
@@ -24,7 +24,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Trial + (char)0x00 + P
             new ContentMatchSet(new byte?[] { 0x54, 0x72, 0x69, 0x61, 0x6C, 0x00, 0x50 }, "INTENIUM Trial & Buy Protection"),
diff --git a/BurnOutSharp/ProtectionType/JoWooDXProt.cs b/BurnOutSharp/ProtectionType/JoWooDXProt.cs
index f6ed5957..bb67b492 100644
--- a/BurnOutSharp/ProtectionType/JoWooDXProt.cs
+++ b/BurnOutSharp/ProtectionType/JoWooDXProt.cs
@@ -10,7 +10,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // @HC09    
             new ContentMatchSet(new byte?[] { 0x40, 0x48, 0x43, 0x30, 0x39, 0x20, 0x20, 0x20, 0x20 }, "JoWooD X-Prot v2"),
diff --git a/BurnOutSharp/ProtectionType/KeyLock.cs b/BurnOutSharp/ProtectionType/KeyLock.cs
index 1ce8524d..a4a4e17b 100644
--- a/BurnOutSharp/ProtectionType/KeyLock.cs
+++ b/BurnOutSharp/ProtectionType/KeyLock.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // KEY-LOCK COMMAND
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/LaserLock.cs b/BurnOutSharp/ProtectionType/LaserLock.cs
index 9d181d9a..d5facccc 100644
--- a/BurnOutSharp/ProtectionType/LaserLock.cs
+++ b/BurnOutSharp/ProtectionType/LaserLock.cs
@@ -12,7 +12,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // :\\LASERLOK\\LASERLOK.IN + (char)0x00 + C:\\NOMOUSE.SP
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/MediaMaxCD3.cs b/BurnOutSharp/ProtectionType/MediaMaxCD3.cs
index 4cf24dba..f95c2ba1 100644
--- a/BurnOutSharp/ProtectionType/MediaMaxCD3.cs
+++ b/BurnOutSharp/ProtectionType/MediaMaxCD3.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // Cd3Ctl
             new ContentMatchSet(new byte?[] { 0x43, 0x64, 0x33, 0x43, 0x74, 0x6C }, "MediaMax CD-3"),
diff --git a/BurnOutSharp/ProtectionType/OnlineRegistration.cs b/BurnOutSharp/ProtectionType/OnlineRegistration.cs
index 6c5fe7f6..46aae111 100644
--- a/BurnOutSharp/ProtectionType/OnlineRegistration.cs
+++ b/BurnOutSharp/ProtectionType/OnlineRegistration.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // I + (char)0x00 + n + (char)0x00 + t + (char)0x00 + e + (char)0x00 + r + (char)0x00 + n + (char)0x00 + a + (char)0x00 + l + (char)0x00 + N + (char)0x00 + a + (char)0x00 + m + (char)0x00 + e + (char)0x00 +  + (char)0x00 +  + (char)0x00 + E + (char)0x00 + R + (char)0x00 + e + (char)0x00 + g + (char)0x00
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/Origin.cs b/BurnOutSharp/ProtectionType/Origin.cs
index 5534ee87..4a47996c 100644
--- a/BurnOutSharp/ProtectionType/Origin.cs
+++ b/BurnOutSharp/ProtectionType/Origin.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // O + (char)0x00 + r + (char)0x00 + i + (char)0x00 + g + (char)0x00 + i + (char)0x00 + n + (char)0x00 + S + (char)0x00 + e + (char)0x00 + t + (char)0x00 + u + (char)0x00 + p + (char)0x00 + . + (char)0x00 + e + (char)0x00 + x + (char)0x00 + e + (char)0x00
             new ContentMatchSet(new byte?[] { 0x4F, 0x00, 0x72, 0x00, 0x69, 0x00, 0x67, 0x00, 0x69, 0x00, 0x6E, 0x00, 0x53, 0x00, 0x65, 0x00, 0x74, 0x00, 0x75, 0x00, 0x70, 0x00, 0x2E, 0x00, 0x65, 0x00, 0x78, 0x00, 0x65, 0x00 }, "Origin"),
diff --git a/BurnOutSharp/ProtectionType/PSXAntiModchip.cs b/BurnOutSharp/ProtectionType/PSXAntiModchip.cs
index f346198f..57d6c7b7 100644
--- a/BurnOutSharp/ProtectionType/PSXAntiModchip.cs
+++ b/BurnOutSharp/ProtectionType/PSXAntiModchip.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             //      SOFTWARE TERMINATED\nCONSOLE MAY HAVE BEEN MODIFIED\n     CALL 1-888-780-7690
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/ProtectDisc.cs b/BurnOutSharp/ProtectionType/ProtectDisc.cs
index 35759956..b201a61d 100644
--- a/BurnOutSharp/ProtectionType/ProtectDisc.cs
+++ b/BurnOutSharp/ProtectionType/ProtectDisc.cs
@@ -13,7 +13,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // HúMETINF
             new ContentMatchSet(new byte?[] { 0x48, 0xFA, 0x4D, 0x45, 0x54, 0x49, 0x4E, 0x46 }, GetVersion76till10, "ProtectDisc"),
diff --git a/BurnOutSharp/ProtectionType/RingPROTECH.cs b/BurnOutSharp/ProtectionType/RingPROTECH.cs
index 7a3a8866..a7acf9e2 100644
--- a/BurnOutSharp/ProtectionType/RingPROTECH.cs
+++ b/BurnOutSharp/ProtectionType/RingPROTECH.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.ProtectionType
         /// Set of all ContentMatchSets for this protection
         /// </summary>
         /// TODO: Investigate as this may be over-matching
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // (char)0x00 + Allocator + (char)0x00 + (char)0x00 + (char)0x00 + (char)0x00
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/SVKProtector.cs b/BurnOutSharp/ProtectionType/SVKProtector.cs
index bf813b92..618cc6a5 100644
--- a/BurnOutSharp/ProtectionType/SVKProtector.cs
+++ b/BurnOutSharp/ProtectionType/SVKProtector.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // ?SVKP + (char)0x00 + (char)0x00
             new ContentMatchSet(new byte?[] { 0x3F, 0x53, 0x56, 0x4B, 0x50, 0x00, 0x00 }, "SVK Protector"),
diff --git a/BurnOutSharp/ProtectionType/SafeDisc.cs b/BurnOutSharp/ProtectionType/SafeDisc.cs
index 766454c5..33482d49 100644
--- a/BurnOutSharp/ProtectionType/SafeDisc.cs
+++ b/BurnOutSharp/ProtectionType/SafeDisc.cs
@@ -14,7 +14,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             new ContentMatchSet(new List<byte?[]>
             {
diff --git a/BurnOutSharp/ProtectionType/SafeLock.cs b/BurnOutSharp/ProtectionType/SafeLock.cs
index 1b0e9945..e0cc0092 100644
--- a/BurnOutSharp/ProtectionType/SafeLock.cs
+++ b/BurnOutSharp/ProtectionType/SafeLock.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // SafeLock
             new ContentMatchSet(new byte?[] { 0x53, 0x61, 0x66, 0x65, 0x4C, 0x6F, 0x63, 0x6B }, "SafeLock"),
diff --git a/BurnOutSharp/ProtectionType/SecuROM.cs b/BurnOutSharp/ProtectionType/SecuROM.cs
index 19848346..5073ff8e 100644
--- a/BurnOutSharp/ProtectionType/SecuROM.cs
+++ b/BurnOutSharp/ProtectionType/SecuROM.cs
@@ -10,7 +10,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // AddD + (char)0x03 + (char)0x00 + (char)0x00 + (char)0x00)
             new ContentMatchSet(new byte?[] { 0x41, 0x64, 0x64, 0x44, 0x03, 0x00, 0x00, 0x00 }, GetV4Version, "SecuROM"),
diff --git a/BurnOutSharp/ProtectionType/SmartE.cs b/BurnOutSharp/ProtectionType/SmartE.cs
index ffbe7a78..a8974f8a 100644
--- a/BurnOutSharp/ProtectionType/SmartE.cs
+++ b/BurnOutSharp/ProtectionType/SmartE.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // BITARTS
             new ContentMatchSet(new byte?[] { 0x42, 0x49, 0x54, 0x41, 0x52, 0x54, 0x53 }, "SmartE"),
diff --git a/BurnOutSharp/ProtectionType/SolidShield.cs b/BurnOutSharp/ProtectionType/SolidShield.cs
index 2eaeeb02..3767f366 100644
--- a/BurnOutSharp/ProtectionType/SolidShield.cs
+++ b/BurnOutSharp/ProtectionType/SolidShield.cs
@@ -11,7 +11,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // D + (char)0x00 + V + (char)0x00 + M + (char)0x00 +   + (char)0x00 + L + (char)0x00 + i + (char)0x00 + b + (char)0x00 + r + (char)0x00 + a + (char)0x00 + r + (char)0x00 + y + (char)0x00
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/StarForce.cs b/BurnOutSharp/ProtectionType/StarForce.cs
index 874ffe0f..fab1d404 100644
--- a/BurnOutSharp/ProtectionType/StarForce.cs
+++ b/BurnOutSharp/ProtectionType/StarForce.cs
@@ -9,7 +9,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             new ContentMatchSet(new List<byte?[]>
             {
diff --git a/BurnOutSharp/ProtectionType/Sysiphus.cs b/BurnOutSharp/ProtectionType/Sysiphus.cs
index cd379099..6a51bec4 100644
--- a/BurnOutSharp/ProtectionType/Sysiphus.cs
+++ b/BurnOutSharp/ProtectionType/Sysiphus.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // V SUHPISYSDVD
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/Tages.cs b/BurnOutSharp/ProtectionType/Tages.cs
index 36f2996e..ad080eee 100644
--- a/BurnOutSharp/ProtectionType/Tages.cs
+++ b/BurnOutSharp/ProtectionType/Tages.cs
@@ -12,7 +12,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // protected-tages-runtime.exe
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/ThreePLock.cs b/BurnOutSharp/ProtectionType/ThreePLock.cs
index 3a18bd8c..e34e2151 100644
--- a/BurnOutSharp/ProtectionType/ThreePLock.cs
+++ b/BurnOutSharp/ProtectionType/ThreePLock.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             new ContentMatchSet(new List<byte?[]>
             {
diff --git a/BurnOutSharp/ProtectionType/ThreeTwoOneStudios.cs b/BurnOutSharp/ProtectionType/ThreeTwoOneStudios.cs
index 6a3b34dc..844daf99 100644
--- a/BurnOutSharp/ProtectionType/ThreeTwoOneStudios.cs
+++ b/BurnOutSharp/ProtectionType/ThreeTwoOneStudios.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // 3 + (char)0x00 + 1 + 2 + (char)0x00 + 1 + (char)0x00 + S + (char)0x00 + t + (char)0x00 + u + (char)0x00 + d + (char)0x00 + i + (char)0x00 + o + (char)0x00 + s + (char)0x00 +   + (char)0x00 + A + (char)0x00 + c + (char)0x00 + t + (char)0x00 + i + (char)0x00 + v + (char)0x00 + a + (char)0x00 + t + (char)0x00 + i + (char)0x00 + o + (char)0x00 + n + (char)0x00
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/VOBProtectCDDVD.cs b/BurnOutSharp/ProtectionType/VOBProtectCDDVD.cs
index 375f907a..5535da85 100644
--- a/BurnOutSharp/ProtectionType/VOBProtectCDDVD.cs
+++ b/BurnOutSharp/ProtectionType/VOBProtectCDDVD.cs
@@ -13,7 +13,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // VOB ProtectCD
             new ContentMatchSet(new byte?[]
diff --git a/BurnOutSharp/ProtectionType/WTMCDProtect.cs b/BurnOutSharp/ProtectionType/WTMCDProtect.cs
index f9fa01a5..d750e3b4 100644
--- a/BurnOutSharp/ProtectionType/WTMCDProtect.cs
+++ b/BurnOutSharp/ProtectionType/WTMCDProtect.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // WTM76545
             new ContentMatchSet(new byte?[] { 0x57, 0x54, 0x4D, 0x37, 0x36, 0x35, 0x34, 0x35 }, "WTM CD Protect"),
diff --git a/BurnOutSharp/ProtectionType/XCP.cs b/BurnOutSharp/ProtectionType/XCP.cs
index 85dd885d..eadfe4a7 100644
--- a/BurnOutSharp/ProtectionType/XCP.cs
+++ b/BurnOutSharp/ProtectionType/XCP.cs
@@ -13,7 +13,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // XCP.DAT
             new ContentMatchSet(new byte?[] { 0x58, 0x43, 0x50, 0x2E, 0x44, 0x41, 0x54 }, "XCP"),
diff --git a/BurnOutSharp/ProtectionType/XtremeProtector.cs b/BurnOutSharp/ProtectionType/XtremeProtector.cs
index 9976ed1e..0793eb04 100644
--- a/BurnOutSharp/ProtectionType/XtremeProtector.cs
+++ b/BurnOutSharp/ProtectionType/XtremeProtector.cs
@@ -8,7 +8,7 @@ namespace BurnOutSharp.ProtectionType
         /// <summary>
         /// Set of all ContentMatchSets for this protection
         /// </summary>
-        private static List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
+        private static readonly List<ContentMatchSet> contentMatchers = new List<ContentMatchSet>
         {
             // XPROT   
             new ContentMatchSet(new byte?[] { 0x58, 0x50, 0x52, 0x4F, 0x54, 0x20, 0x20, 0x20 }, "Xtreme-Protector"),
diff --git a/BurnOutSharp/Scanner.cs b/BurnOutSharp/Scanner.cs
index a8ae5996..7a980fea 100644
--- a/BurnOutSharp/Scanner.cs
+++ b/BurnOutSharp/Scanner.cs
@@ -37,7 +37,7 @@ namespace BurnOutSharp
         /// <summary>
         /// Cache for all IPathCheck types
         /// </summary>
-        private static IEnumerable<IPathCheck> pathCheckClasses = InitPathCheckClasses();
+        private static readonly IEnumerable<IPathCheck> pathCheckClasses = InitPathCheckClasses();
 
         /// <summary>
         /// Constructor