FBI: State hackers exploiting new Zoho zero-day since October

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Customers warned to patch their servers​

After patching the vulnerability, the company also warned customers of ongoing exploitation attempts urging them to immediately deploy the security updates to block incoming attacks.

"As we are noticing indications of exploitation of this vulnerability, we strongly advise customers to update their installations to the latest build as soon as possible," Zoho said.

To detect if your server was breached using this security flaw, you can use Zoho's Exploit Detection Tool and go through the steps detailed here.

The company advises backing up critical business data, disconnecting impacted network systems, formatting all compromised servers, restoring Desktop Central, and updating to the latest build.