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US 9,294,490 B1Granted
Apparatus and method for identifying a domain name system resource exhaustion attack
AssigneeCloudmark, Inc.
InventorsNeil Cook, Olivier Lemarié, Aaron Alexander Lehmann
Life of this patent
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Abstract
A machine includes a processor and a memory connected to the processor. The memory stores instructions executed by the processor to identify a resource attack in response to spikes in the number of unique subdomains being queried and spikes in the number of timeouts or delayed responses from a specified name server.
Claims7
A machine, comprising:
- a processor;
- and
- a memory connected to the processor, the memory storing instructions executed by the processor to identify a domain name system resource exhaustion attack in response to spikes in the number of unique subdomains being queried and spikes in the number of failed responses from a specified name server.
Dependencies are inferred from the claim text.