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Dark Reading
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.
The Hacker News
The advanced persistent threat (APT) actor known as Winter Vivern is now targeting officials in Europe and the U.S. as part of an ongoing cyber espionage campaign. "TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals that allows them to gain access to the email mailboxes of government entities in Europe," Proofpoint
The Register
Winter is coming for NATO countries A cyber spy gang supporting Russia is targeting US elected officials and their staffers, in addition to European lawmakers, using unpatched Zimbra Collaboration software in two campaigns spotted by Proofpoint.…
Bleeping Computer
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, governments, military personnel, and diplomats. [...]
Dark Reading
The "underreported" APT has returned to focus after attacks promoting Russian and Belarusian government interests and going after targets with humor, zest, and scrappiness.
The Hacker News
The advanced persistent threat known as Winter Vivern has been linked to campaigns targeting government officials in India, Lithuania, Slovakia, and the Vatican since 2021. The activity targeted Polish government agencies, the Ukraine Ministry of Foreign Affairs, the Italy Ministry of Foreign Affairs, and individuals within the Indian government, SentinelOne said in a report shared with The
Bleeping Computer
An advanced hacking group named 'Winter Vivern' targets European government organizations and telecommunication service providers to conduct espionage. [...]
The Register
With this zero-day, researchers say the 'scrappy' group is stepping up its operations The Winter Vivern cyber spy group is exploiting an XSS zero-day vulnerability in attacks on European governments.…
The Hacker News
The threat actor known as Winter Vivern has been observed exploiting a zero-day flaw in Roundcube webmail software on October 11, 2023, to harvest email messages from victims' accounts. "Winter Vivern has stepped up its operations by using a zero-day vulnerability in Roundcube," ESET security researcher Matthieu Faou said in a new report published today. Previously, it was using known
Bleeping Computer
The Winter Vivern Russian hacking group has been exploiting a Roundcube Webmail zero-day since at least October 11 to attack European government entities and think tanks. [...]