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ZoneAlarm, an internet security software company owned by Israeli cybersecurity firm Check Point Technologies, has suffered a data breach exposing data of its discussion forum users, the company confirmed The Hacker News.

With nearly 100 million downloads, ZoneAlarm offers antivirus software, firewall, and additional virus protection solutions to home PC users, small businesses, and mobile phones worldwide.

Though neither ZoneAlarm or its parent company Check Point has yet publicly disclosed the security incident, the company quietly sent an alert via email to all affected users over this weekend, The Hacker News learned.

The email-based breach notification advised ZoneAlarm forum users to immediately change their forum account passwords, informing them hackers have unauthorisedly gained access to their names, email addresses, hashed passwords, and date of births.

Moreover, the company has also clarified that the security incident only affects users registered with the “” domain, which has a small number of subscribers, nearly 4,500.

“This [forum] is a separate website from any other website we have and used only by a small number of subscribers who registered to this specific forum,” the email notification reads.

“The website became inactive in order to fix the problem and will resume as soon as it is fixed. You will be requested to reset your password once joining the forum.”​

images from Hacker News