An anonymous reader writes "Attack durations are increasing because perpetrators are less concerned about detection and protecting their botnets. The widespread availability of compromised web servers makes it much easier for malicious actors to replenish, grow and redeploy botnets. Traditionally, botnets have been built from compromised clients. This requires malware distribution via PCs and virus infections, and takes considerable time and effort. Consequently, attackers wanted to protect their client-based botnets and were more fearful of detection, so we saw shorter attack durations. The average packet-per-second rate reached 47.4 Mpps and the average bandwidth reached 49.24 Gbps. These metrics, representing increases of 1,655 percent and 925 percent respectively compared to Q2 2012."