diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 000000000..e4915cd1c
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,16 @@
+# Security Policy
+
+## Supported Versions
+
+Use this section to tell people about which versions of your project are
+currently being supported with security updates.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 5.2.4   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+If you have found any security vulnerability you can contact us via 
+kim.kulling@googlemail.com
+
diff --git a/code/AssetLib/FBX/FBXConverter.cpp b/code/AssetLib/FBX/FBXConverter.cpp
index 9d891864a..83d95dada 100644
--- a/code/AssetLib/FBX/FBXConverter.cpp
+++ b/code/AssetLib/FBX/FBXConverter.cpp
@@ -643,7 +643,7 @@ void FBXConverter::GetRotationMatrix(Model::RotOrder mode, const aiVector3D &rot
 bool FBXConverter::NeedsComplexTransformationChain(const Model &model) {
     const PropertyTable &props = model.Props();
 
-    const float zero_epsilon = ai_epsilon;
+    const auto zero_epsilon = ai_epsilon;
     const aiVector3D all_ones(1.0f, 1.0f, 1.0f);
     for (size_t i = 0; i < TransformationComp_MAXIMUM; ++i) {
         const TransformationComp comp = static_cast<TransformationComp>(i);
@@ -3232,7 +3232,7 @@ aiNodeAnim* FBXConverter::GenerateSimpleNodeAnim(const std::string& name,
 
     bool ok = false;
     
-    const float zero_epsilon = ai_epsilon;
+    const auto zero_epsilon = ai_epsilon;
 
     const aiVector3D& preRotation = PropertyGet<aiVector3D>(props, "PreRotation", ok);
     if (ok && preRotation.SquareLength() > zero_epsilon) {
@@ -3370,9 +3370,9 @@ FBXConverter::KeyFrameListList FBXConverter::GetRotationKeyframeList(const std::
                 float vc = curve->GetValues().at(1);
                 for (size_t n = 1; n < count; n++) {
                     while (std::abs(vc - vp) >= 180.0f) {
-                        float step = std::floor(float(tc - tp) / (vc - vp) * 179.0f);
+                        double step = std::floor(double(tc - tp) / std::abs(vc - vp) * 179.0f);
                         int64_t tnew = tp + int64_t(step);
-                        float vnew = vp + (vc - vp) * step / float(tc - tp);
+                        float vnew = vp + (vc - vp) * float(step / (tc - tp));
                         if (tnew >= adj_start && tnew <= adj_stop) {
                             Keys->push_back(tnew);
                             Values->push_back(vnew);
diff --git a/code/AssetLib/glTF2/glTF2Exporter.cpp b/code/AssetLib/glTF2/glTF2Exporter.cpp
index ffd8d223e..d2f413932 100644
--- a/code/AssetLib/glTF2/glTF2Exporter.cpp
+++ b/code/AssetLib/glTF2/glTF2Exporter.cpp
@@ -908,7 +908,7 @@ Ref<Node> FindSkeletonRootJoint(Ref<Skin> &skinRef) {
     do {
         startNodeRef = parentNodeRef;
         parentNodeRef = startNodeRef->parent;
-    } while (!parentNodeRef->jointName.empty());
+    } while (parentNodeRef && !parentNodeRef->jointName.empty());
 
     return parentNodeRef;
 }
diff --git a/contrib/unzip/crypt.c b/contrib/unzip/crypt.c
index 299ce03d2..4cc731b3e 100644
--- a/contrib/unzip/crypt.c
+++ b/contrib/unzip/crypt.c
@@ -43,10 +43,10 @@
 
 #include "crypt.h"
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #   pragma warning(push)
 #   pragma warning(disable : 4244)
-#endif // _WIN32
+#endif // _MSC_VER
 
 /***************************************************************************/
 
@@ -164,8 +164,8 @@ int crypthead(const char *passwd, uint8_t *buf, int buf_size, uint32_t *pkeys,
     return n;
 }
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #   pragma warning(pop)
-#endif // _WIN32
+#endif // _MSC_VER
 
 /***************************************************************************/
diff --git a/contrib/unzip/ioapi.c b/contrib/unzip/ioapi.c
index 30a296d0f..d9ae01e7d 100644
--- a/contrib/unzip/ioapi.c
+++ b/contrib/unzip/ioapi.c
@@ -23,8 +23,10 @@
 
 #ifdef _WIN32
 #   define snprintf _snprintf
+#ifdef _MSC_VER
 #   pragma warning(push)
 #   pragma warning(disable : 4131 4100)
+#endif
 #   ifdef __clang__
 #       pragma clang diagnostic push
 #       pragma clang diagnostic ignored "-Wunused-parameter"
@@ -357,9 +359,9 @@ void fill_fopen64_filefunc(zlib_filefunc64_def *pzlib_filefunc_def)
     pzlib_filefunc_def->opaque = NULL;
 }
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #   pragma warning(pop)
 #   ifdef __clang__
 #       pragma clang diagnostic pop
 #   endif
-#endif // _WIN32
+#endif // _MSC_VER
diff --git a/contrib/unzip/unzip.c b/contrib/unzip/unzip.c
index f1eddeeda..b2f045b0a 100644
--- a/contrib/unzip/unzip.c
+++ b/contrib/unzip/unzip.c
@@ -73,10 +73,10 @@
 #  define TRYFREE(p) {if (p) free(p);}
 #endif
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #   pragma warning(push)
 #   pragma warning(disable : 4131 4244 4189 4245)
-#endif // _WIN32
+#endif // _MSC_VER
 
 const char unz_copyright[] =
    " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
@@ -1995,6 +1995,6 @@ extern int ZEXPORT unzEndOfFile(unzFile file)
     return 0;
 }
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #   pragma warning(pop)
-#endif // _WIN32
\ No newline at end of file
+#endif // _MSC_VER
\ No newline at end of file