SonicWall on Wednesday disclosed that an unauthorized party accessed firewall configuration backup files for all customers who have used the cloud backup service.

"The files contain encrypted credentials and configuration data; while encryption remains in place, possession of these files could increase the risk of targeted attacks," the company said .

It also noted that it's working to notify all partners and customers, adding it has released tools to assist with device assessment and remediation. The company is also urging users to log in and check for their devices.

The development comes a couple of weeks after SonicWall urged customers to perform a credential reset after their firewall configuration backup files were exposed in a security breach impacting MySonicWall accounts.

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