The Russian-speaking hack group Winter Vivern (aka TA473 in the Proofpoint classification) has been actively exploiting a vulnerability in Zimbra and has been stealing letters from NATO officials, governments, military personnel and diplomats since February 2023. Let me remind you that we also wrote that the FBI and NSA release a statement about attacks by… Continue reading Russian-Speaking Hack Group Winter Vivern Attacks Governments in Europe and Asia
Tag: Zimbra
Chinese hackers use Zimbra 0-day vulnerability to hack European media and authorities
Security firm Volexity has warned that a previously unknown Chinese hack group is exploiting a 0-day vulnerability in Zimbra’s collaborative software. According to official statistics, more than 200,000 enterprises in 140 countries around the world use Zimbra, including more than 1,000 government and financial institutions. The researchers write that using the 0-day vulnerability, attackers gain… Continue reading Chinese hackers use Zimbra 0-day vulnerability to hack European media and authorities