How can I proctect my .NET application against DLL Hijacking?

Question

We have a .NET 3.5 application with registered extensions. How can we protect it against DLL Hijacking attacks?

Because of legacy & design problems strong naming

Answer 1

If your application is meant to be obfuscated, merging the DLL with the EXE first using ILMerge before obfuscation would provide absolute protection against DLL hijacking and also eliminates unused code and gives you a standalone EXE.