Is securityexploded.com safe

NIS 2014 has blocked the install manager from securityexploded.com when I install AsteriskPasswordSpy and ThunderbirdPassDecrypter. I had tried to login Yahoo Mail on my android phone, forgot the password, tried to recover, and ended up with the only recovery option being an old deactivated cell phone number, So I used ThunderbirdPassDecrypter to access my Yahoo Mail password to get going again. It worked. Bu Norton offered to block the install manager from downloading from securityexploded.com, which I agreed to. The program still installed to the desktop and worked though, although not installed completely. It doesn't register in Progams and Features, and probably not in the registry very much (I haven't checked there yet). But the app works. Is this app safe to use, and is securityexploded.com a malicious site?

 

Thanks for any input,

Tom