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Powerful Cyberattack Knocked Out Ukraine's Top Terrestrial Telco for Fifteen Hours

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Powerful Cyberattack Knocked Out Ukraine's Top Terrestrial Telco for Fifteen Hours

Documents show poor Sitel/Okta breach responses, U.S. officials weigh Trickbot sanctions, Yandex ships mobile device data back to Russia, WordPress sites used to launch DDoS attacks on Ukraine, more

Cynthia Brumfield
Mar 29, 2022
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Powerful Cyberattack Knocked Out Ukraine's Top Terrestrial Telco for Fifteen Hours

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A “powerful” cyber attack hit Ukraine’s biggest fixed-line telecommunications company, Ukrtelecom, crippling the company’s services across the country. A similar incident occurred earlier this month with Triolan, a smaller Ukrainian telecom company.

Although it was unclear whether the attack was a DDoS event or a more sophisticated intrusion, Alp Toker, director of NetBlocks, said the “gradual loss of connectivity was a giveaway that it wasn’t a power or cable cut.” He called the cyberattack the most significant since Russia’s invasion. Fifteen hours after the attack, NetBlocks reported that Ukrtelecom’s service was being restored. (Thomas Brewster / Forbes)

Related: Mirror, VentureBeat, Slashdot, Reuters, Cyberscoop, The Record by Recorded Future, PCMag.com, BBC News, Wall Street Journal

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