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Recently by Chad Seaman
Executive Summary Recent attacks against Akamai customers have leveraged a networking protocol known as protocol 33, or Datagram Congestion Control Protocol (DCCP). These attacks prompted the Akamai SIRT team to look into the protocol further and offer insights and mitigation strategies for network defenders.
Overview In recent weeks, a series of DDoS attacks were directed at multiple financial institutions. The attacks utilized a seldom seen reflection vector known as TCP SYN-ACK reflection. SYN-ACK reflection isn't new, but it's rarely observed due mostly to its lack of popularity among attackers and impact on the victim. The observed attacks sparked conversations both publicly and privately amongst several organizations, including Akamai. In this write-up, we're going to