Palo AltoKiteworks told customers to shut down for 6 hours Saturday.
Kiteworks says federal intelligence authorities warned a threat actor may target customer systems.
Kiteworks was Accellion, whose 2020 zero-day let Clop, a Russian hacking group, steal data from dozens of companies.
Security chief Frank Balonis said Kiteworks knows of no compromise, and release 9.5.1 fixes all known flaws.
No public vulnerability number or patch exists, and the Federal Bureau of Investigation declined to comment.
How each outlet framed it
- The Record
- reports preventative shutdown order after federal threat intelligence warning; no confirmed compromise, all vulnerabilities patched
Sources: The Record