AI Summary

Russian hackers have successfully exploited a zero-day vulnerability in Zimbra, targeting US and Ukrainian organizations. This vulnerability allows attackers to gain unauthorized access to sensitive information. The hacking group, identified as "Laundry Bear," uses a unique phishing tactic. Instead of requiring victims to click on malicious links, they send emails that can compromise systems simply by being opened or previewed. The significance of this development lies in the fact that it highlights the evolving nature of cyber threats, where even seemingly innocuous actions can be exploited by sophisticated attackers.

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