ESET Research has been closely tracking the cyberespionage operations of Winter Vivern for more than a year and, during our routine monitoring, we found that the group began exploiting a zero-day XSS ...

A Russian hacking group tracked as TA473, aka 'Winter Vivern,' has been actively exploiting vulnerabilities in unpatched Zimbra endpoints since February 2023 to steal the emails of NATO officials, ...

Low-profile threat group Winter Vivern has been exploiting a zero-day flaw in Roundcube Webmail servers with a malicious email campaign targeting governmental organizations and a think tank in Europe ...

According to ESET Research, Winter Vivern is a Russian hacking group that has been operating since 2020. The notorious cybercriminals reportedly target governments across Central Asia and Europe. The ...

The Winter Vivern Russian hacking group has been exploiting a Roundcube Webmail zero-day in attacks targeting European government entities and think tanks since at least October 11. The Roundcube ...

ESET Research has discovered a significant cybersecurity threat as the Winter Vivern group exploited a zero-day cross-site scripting (XSS) vulnerability in the Roundcube Webmail server. The new ...

“Winter Vivern is a threat to governments in Europe because of its persistence, its very consistent running of phishing campaigns, and because a significant number of internet-facing applications are ...

The Russia-aligned advanced persistent threat (APT) known as Winter Vivern has been observed conducting espionage campaigns targeting government organizations and a private telecommunication ...

New Cyberattack From Winter Vivern Exploits a Zero-Day Vulnerability in Roundcube Webmail Your email has been sent After reading the technical details about this zero-day that targeted governmental ...