Imperva’s whitepaper highlights a growing DDoS tactic: pulse wave attacks—short, high-intensity bursts repeated in quick succession. These assaults overwhelm “appliance-first” hybrid defenses, exploiting delays in cloud failover and causing repeated outages. The lack of early attack data transfer and limited diversion capacity compounds the issue, making mitigation slow and costly. Pulse waves often come from sophisticated bad actors with powerful botnets and precision timing. As DDoS attacks trend shorter and more frequent, Imperva urges a shift toward cloud-first mitigation to close these gaps and protect against evolving threats.

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