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[SECURITY]■ STORY TIMELINE

MICROSOFT APRIL UPDATES BREAK THIRD-PARTY BACKUPS

Microsoft has confirmed that April 2026 security updates are causing backup failures in applications using the psmounterex.sys driver. The company is investigating the issue affecting multiple backup solutions.

2 SOURCESFIRST SEEN MAY 4, 10:40 AM► READ THE ARTICLE
Bleeping Computer+0m

Microsoft has confirmed that the April 2026 security updates are causing failures in third-party backup applications usi…

Bleeping Computer+23h 24m

A new version of the CloudZ remote access tool (RAT) is deploying a previously unseen malicious plugin called Pheno that…