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Russian APT 'Winter Vivern' Targets European Government, Military

ID: 36be72f8-47de-5c04-ad87-3fbfc0482d13

STIX ID: report--36be72f8-47de-5c04-ad87-3fbfc0482d13

Feed Name: Dark Reading

Threat Score
90/100

Date Published: 2024-02-17

Date Updated: 2026-04-21

Author: Nathan Eddy, Contributing Writer

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Recorded Future's Insikt Group reports that the Russia-aligned APT Winter Vivern (TAG-70) exploited a zero-day XSS vulnerability in Roundcube webmail in October to compromise at least 80 organizations across Europe, targeting governments, militaries, embassies and critical infrastructure to conduct cyber-espionage and gather politically sensitive intelligence.

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