# US Agencies Warn of Russian State-Supported Cyber Threat to Zimbra Users

US cybersecurity agencies, including CISA, NSA, FBI, and international partners, have issued a warning about ongoing malicious cyber activity by Russian state-supported actors targeting Zimbra Collaboration Suite users. The threat involves exploitation of vulnerabilities to gain unauthorized access to email and sensitive data. This alert underscores the persistent risk of nation-state cyber espionage against widely used collaboration platforms.

**Importance:** 4/5

## Sources

### Security
- [CISA News](https://www.cisa.gov/news-events/news/cisa-nsa-fbi-and-partners-warn-zimbra-collaboration-suite-users-ongoing-russian-state-supported) — Thu, 23 Jul 26 12:00:00 +0000
- [The Hacker News](https://thehackernews.com/2026/07/russian-espionage-group-exploited.html) — Fri, 24 Jul 2026 00:06:08 +0530