Update README.md

Author: jeanchristopheruel

README.md

@@ -149,9 +149,11 @@ quad[:,1:4,:] *= scale # Avoid scaling normals
 ```
 
 ### Read large STL file 
-To read large STL file with a large triangle count > **1 000 000**, the openstl buffer overflow safety must be unactivated with
+To read STL file with a large triangle count > **1 000 000**, the openstl buffer overflow safety must be unactivated with
 `openstl.set_activate_overflow_safety(False)` after import. Deactivating overflow safety may expose the application 
-to potential buffer overflow risks (if openstl is used in a backend server with sensible data for example).
+to a potential buffer overflow attack vector since the stl standard is not backed by a checksum.
+This can cause significant risks if openstl is used as part of a service in a backend server for example. For
+domestic usage, ignore this warning.
 
 # C++ Usage
 ### Read STL from file