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ESET Research discover campaigns by the Winter Vivern APT group that exploit a zero-day XSS vulnerability in the Roundcube Webmail server and target governmental entities and a think tank in Europe.
A campaign targeting European governmental organizations and a think tank shows consistency from the low-profile threat group, which has ties to Belarus and Russia.
A new series of zero-day attacks has hacked European government email servers. The campaign was orchestrated by a group of Russian hackers.
Cybersecurity defenders in Ukraine revealed multiple Russian spearphishing campaigns including an effort by Kremlin military intelligence to penetrate open source
A threat group tracked as APT28 and linked to Russia's General Staff Main Intelligence Directorate (GRU) has breached Roundcube email servers belonging to multiple Ukrainian organizations, including government entities.