Cybersecurity Firm Fortinet Says Some of Clients’ Data Breached

The cybersecurity firm Fortinet Inc. said Thursday that someone had broken into a “limited” number of files that contained information related to some of its customers.

The Sunnyvale, California-based company, which sells network security solutions, said it has communicated directly with its customers on the matter. The firm’s own operations and services weren’t affected.

“An individual gained unauthorized access to a limited number of files stored on Fortinet’s instance of a third-party cloud-based shared file drive, which included limited data related to a small number of Fortinet customers,” Fortinet said in an emailed statement. “To date there is no indication ...