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Vulnerabilities & PatchesEmerging1 sourceSep 26, 2026 · 05:56via CyberPress

Kiteworks Customers Told to Shut Down Servers Over Possible Zero-Day Attack

Brief

Kiteworks has urged customers worldwide to temporarily shut down their servers after receiving law-enforcement threat intelligence indicating that a cyberattack targeting Kiteworks systems may be imminent.

The company said the move is preventive and that it has no evidence of a confirmed compromise.

The warning affects organizations using Kiteworks’ secure file-transfer and communications products, which enterprises and public-sector entities widely use to exchange sensitive data.

Kiteworks Customers Told to Shut Down Servers

In a customer notification attributed to Kiteworks CISO Frank Balonis, the company said it had received “credible threat intelligence from law enforcement” that an attack could occur during the weekend.

Kiteworks recommended a coordinated six-hour shutdown window on Saturday, September 26.

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