1. A method for protecting a computer from malicious downloadables, comprising: receiving, by a first computer, an incoming downloadable, the downloadable including a security profile including a list of suspicious instructions that was attached thereto by a second computer; extracting the security profile from the received downloadable; comparing the security profile with a security policy to determine if the downloadable violates the security policy; and taking an additional action related to execution of the downloadable if the downloadable violates the security policy.