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The Hacker News
30 Jul 2026

Russian Hackers Exploit Microsoft OWA Flaw to Keep Mailbox Access After Credential Rotation

The Russian threat actors recently linked to the exploitation of a now-patched vulnerability in Zimbra have been observed exploiting another vulnerability, this time in Microsoft Outlook Web Access (OWA), to target U.S.

// analyst note

This briefing summarises reporting from The Hacker News. 90@! Ltd curates and rewrites third-party cybersecurity reporting for UK defenders. For the full technical write-up, read the original source.

Curated by 90@! Ltd from The Hacker News. Read the original for full technical detail.

Read original at The Hacker News

// 90@! Ltd

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