Just as the emergence of COVID-19 led to changes in how threat actors launched attacks, the return to work and school that began in the second half of 2021 (before Omicron reared its ugly head in November) resulted in a number of changes on the part of cyber attackers.
One of the more noticeable changes has been an increase in attacks that target specific industries. With these direct-path attacks, threat actors target individual organizations rather than indiscriminately targeting customers of communications service providers (CSPs) such as internet service providers (ISPs) and wireless carriers.
Specifically, threat actors launched two direct-path packet-flooding attacks of more than 2.5 terabits per second using server-based botnets in 2H 2021. These are the first terabit-class, direct-path distributed denial-of-service (DDoS) attacks that have been identified, and they signal that changes are afoot in attacker strategy.
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