Shares of (NASDAQ: OKTA) slumped on Friday, losing as much as 13.9%. By the time the market closed, the stock was still down 11.64%.

The catalyst that sent the cybersecurity specialist lower was reports that a hacker had -- once again -- infiltrated its system.

In an alert posted on its website, Okta revealed that an unidentified hacker (or group of hackers) had gained access to files "certain Okta customers" had uploaded to the company's support system. 

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Source Fool.com