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DDoS attacks are now more frequent and complex

(Image credit: Image Credit: Profit_Image / Shutterstock)

According to a new report from cybersecurity firm Netscout, DDoS attacks (opens in new tab) have are becoming more frequent and complex as a result of Covid-19 and the remote working explosion.

The report, which analyzes the effects of remote working on the overall cybersecurity posture in the UK, states that cybercriminals “continued their impressively efficient efforts to syphon in the latest IoT exploits and churn out new Mirai-based variants.”

For context, the researchers logged 929,000 DDoS attacks in May alone.

Mirai (a botnet that hijacks IoT devices uses its bandwidth to execute large-scale DDoS attacks) variants continue to be the most dominant botnets out there, but several non-Mirai IoT malware samples also caught Netscout's attention.

Gafgyt, a multi-architecture IoT bot, for example, comes with “several similarities to Mirai”.

“Gafgyt has used telnet with default/factory credentials and exploits to spread to vulnerable IoT devices,” the researchers explained. “Like Mirai, Gafgyt supports several TCP, UDP, and HTTP based DDoS attacks (opens in new tab).”

The report also claims that whoever is responsible for creating Gafgyt remains active, as it is “continuously undergoing development”.

Netscout claims to have spotted a significant spike in Gafgyt samples from February through June.

Sead Fadilpašić is a freelance tech writer and journalist with more than 17 years experience writing technology-focussed news, blogs, whitepapers, reviews, and ebooks. And his work has featured in online media outlets from all over the world, including Al Jazeera Balkans (where he was a Multimedia Journalist), Crypto News, TechRadar Pro, and IT Pro Portal, where he has written news and features for over five years. Sead's experience also includes writing for inbound marketing, where he creates technology-based content for clients from London to Singapore. Sead is a HubSpot-certified content creator.