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In the context you provide, it has to do with a backdoor that changes or moves over time. There might be a backdoor on port 8000, then it switches to port 8001, etc. The idea is that once a backdoor is discovered, the hacker must re-discover it to use it again. See also the concept of "port knocking" in real life, where the backdoor only opens once you ...


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In surveillance I believe the concept of 'roving' is down to the court order placed on an individual. For example; If an authority, be it the police, intelligence or security services is issued a roving surveillance order by a court to tap your phone, then they tap your phone, but then you dispose or make inactive that phone, then the order will allow ...


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You should look not into IDS technologies but Database Activity Monitoring (& Prevention). DAM(P) software shims itself in to watch all SQL queries and results and uses a combination of generic rules and guided knowledge to detect and in some cases prevent inappropriate use. An IDS will catch SQL injection, which is more specifically aimed at web ...



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