Telephonic DoS a smokescreen for cyberattack on Ukrainian utility

The late December telephonic denial-of-service attack against a Ukrainian power company was a smokescreen to cover up a cyber attack, experts say.

“This is one of the more common reasons why these attacks are done,” said Rene Paap, product marketing manager at security vendor A10 Networks.

According to Paap, telephonic DoS attacks have been around for a while, but don’t get as much attention as the big DDoS attacks.

Just like a regular DDoS attack, telephonic DoS works by overwhelming the victim’s call center with so many fake phone calls that legitimate calls can’t get through.

[ ALSO ON CSO: Ukrainian power companies are getting hit with more cyberattacks ]

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