It installed with Visual Studio 2010 and said that it provided tamper resistant stuff. Nothing seems any different. What does it do?Dotfuscator Professional obfuscation implements runtime decrypted String encryption. As mentioned before, any encryption (or specifically decryption) done at runtime is inherently insecure. That is, a smart hacker can eventually break it, but for Strings present in customer code, I found it worthwhile. Effectively, we apply a simple encryption algorithm (with a twist to thwart decompilers) to any strings in your application you desire. So you need to pay for the Professional version to get string encryption.
With injection, Dotfuscator can easily add application monitoring to existing apps and new development. This software application allows you the Cross Assembly Renaming, it has Tamper Detection (Default Action), Commercial RIS endpoint,Opt-in/Opt-out Support and much more