Verisign’s first-quarter distributed denial-of-service (DDoS) report, released June 3, shows a mixed view of the attack landscape. The report, which examines DDoS attacks that Verisign observed from Jan. 1 to March 31, 2015, shows that DDoS attack frequency in this year’s first quarter grew 7 percent from the fourth quarter of 2014. Attacks greater than 1G bps are now the norm, and attacks in the 1G-bps to 5G-bps range account for 34 percent of all DDoS attacks in the first quarter. In terms of peak attack volume, the first quarter was not a record-setter. Verisign reported that the largest User Datagram Protocol (UDP) reflection-based DDoS attack it observed in the quarter came in at 54G bps. In contrast, the largest UDP-based DDoS attack that Verisign observed in the third quarter of 2014 was 90G bps. The largest Transmission Control Protocol- (TCP-) based DDoS attack observed in first quarter of 2015 was only 8G bps. DDoS attacks affected multiple industry verticals in the first quarter, with IT services being the top target, at 34 percent, of attacks. In this slide show, eWEEK examines key findings from the Verisign first-quarter DDoS trends report.

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