That would explain this 440GB leak, then Fortinet has admitted that bad actors accessed cloud-hosted data about its customers, but insisted it was a "limited number" of files. The question is: how limited is "limited"?

Fortinet (NASDAQ:FTNT) confirmed a data breach after a hacker claimed to have gained access to files from the cybersecurity company's Microsoft (MSFT) Sharepoint server, according to a report by BleepingComputer on Thursday afternoon.

Cybersecurity giant Fortinet has confirmed it suffered a data breach after a threat actor claimed to steal 440GB of files from the company's Microsoft Sharepoint server.

Cybersecurity vendor Fortinet disclosed that “less than 0.3 percent” of customers were impacted in the compromise of its cloud file-share environment — though that still equates to a potential 1,500 customers affected.

On Thursday, cybersecurity giant Fortinet disclosed a breach involving customer data. In a statement posted online, Fortinet said an individual intruder accessed “a limited number of files” stored on a third-party shared cloud drive belonging to Fortinet,

Fortinet has confirmed suffering a data breach impacting customers after a hacker leaked files allegedly stolen from the company.

A threat actor accessed ‘a limited number of files stored on Fortinet’s instance of a third-party cloud-based shared file drive,’ the security vendor says.

The files included “limited data related to a small number of Fortinet customers,” the announcement added, stating that this affects less than 0.3% of its user base. The company then said that its operations have not been impacted by the attack,