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Russian State-Supported Cyber Actors Conduct Phishing Campaign Targeting Users of Zimbra Collaboration Suite

medcisa_advisoriesPublished 2026-07-23

<div class="c-page-title__buttons"><a class="c-button" href="https://media.defense.gov/2026/Jul/22/2003965244/-1/-1/1/CSA_RUSSIA_PHISHING_TARGET_ZIMBRA.PDF">Russian State-Supported Cyber Actors Conduct Phishing Campaign Targeting Users of Zimbra Collaboration Suite</a></div> <h2><strong>Executive summary</strong>&nbsp;</h2> <p>A group of Russian state-supported cyber actors has been targeting and

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://www.cisa.gov/news-events/cybersecurity-advisories/aa26-204a