Web Gateway Security Grant Murphy – Director, Web Gateway Security Negative security model ( known bad ).  Must know about all possible attack vectors.  Not possible. Reference: Metasploit, HD Moore, VoMM. Positive security model.  Intent and reputation model.  Something is good because of its known intent and reputation. Real world example.  Credit score.  If I have a reputation for defaults or late payments then I will get a lower credit score than someone who pays bill on time or…

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