Mozilla Store closed after security breach

Graham Cluley
Graham Cluley
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 @grahamcluley.com
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Mozilla, famous for its Firefox web browser, has closed its online store after a security breach that have compromised customers.

In a blog post Mozilla confirmed that it had decided to suspend the store after it was discovered that GatewayCDI, a third-party firm running the backend of the ecommerce operation, had suffered an unspecified security incident.

Mozilla store closed

The store sells promotional items promoting Firefox, including T-shirts, coffee mugs and mouse pads carrying the logo.

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Details about the nature of the security breach have not yet been made public, but Mozilla says that GatewayCDI is investigating the incident, and will be contacting Mozilla Store customers who may have been affected.

Obviously there will be concern that hackers may have been able to access personal information such as names, addresses, email contact information and possibly credit card information that could be used for the purposes of identity theft.

This is clearly bad news for Mozilla Store customers who may be impacted by the security incident, but I can’t help but feel sorry for the guys at Mozilla too. From the sound of things they did nothing wrong other than put their trust in a third party ecommerce company, and yet it’s Mozilla’s name which will make the headlines and be tarnished as a result of this.


Graham Cluley is an award-winning keynote speaker who has given presentations around the world about cybersecurity, hackers, and online privacy. A veteran of the computer security industry since the early 1990s, he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows, makes regular media appearances, and hosts the popular "Smashing Security" podcast. Follow him on LinkedIn, Bluesky and Mastodon, or drop him an email.

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