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Pro-Ukraine hackers breach Russian ISP in revenge for KyivStar attack

ID: 14807eb0-981c-53df-8c06-d79b69366fdc

STIX ID: report--14807eb0-981c-53df-8c06-d79b69366fdc

Feed Name: Bleeping Computer

Threat Score
78/100

Date Published: 2024-01-10

Date Updated: 2026-04-20

Author: Bill Toulas

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A pro-Ukraine hacktivist group called "Blackjack" claims to have breached and disrupted Moscow ISP M9com in retaliation for an attack on Kyivstar, publishing Tor links to archives allegedly containing employee and customer credentials, 50 GB of call data, screenshots showing FTP file deletion, backup wiping, vSphere and RPKI access, and defacing the company website; Ukrainian sources cited in the report say roughly 20 TB of data were deleted and the group promises further strikes.

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