Denial of Service
An adversary can evade detection by disabling or overwhelming the IDS. This can be accomplished by exploiting a bug in the IDS, using up computational resources on the IDS, or deliberately triggering a large number of alerts to disguise the actual attack. The tools 'stick' and 'snot' were designed to generate a large number of IDS alerts by sending attack signatures across the network, but will not trigger alerts in IDSs that maintain application protocol context.
Read more about this topic: Intrusion Detection System Evasion Techniques
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