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6) periodically the anti-malware program checks the hash of the OS and itself ( which is reloaded each time executed ) that is in memory with what is on the first hard drive
7) the anti-malware program also checks hash functions of any executables on the second hard drive, which it stores in a separate swap file only writable by the anti-malware program
8) if the hash doesn't match the OS or anti-malware program, or if it detects a unwanted signature, the first swap file is deleted, the administrator and user notified.
As long as you're not using MD5, you should be ok. In case you haven't heard, there is now an automated tool to beat MD5 hashing. I have a thread here somewhere which gives the details so check it out. I'd rather not rehash (no pun intended) here because I want to keep the conversation on topic.