The photo-sharing platform Flickr has begun notifying users about a potential security incident that may have exposed their personal information. The Flickr data breach was caused by a security flaw discovered within a system operated by one of the company's third-party email service providers.Â
The company has not yet disclosed which service provider was involved or the total number of users affected by the incident.
Flickr said a vulnerability in a system operated by a third-party email service provider may have allowed unauthorized access to some user information. The user information exposure includes:
Additionally, user activity on the platform was among the compromised information. Flickr has explicitly stated that more sensitive credentials, such as account passwords and payment card numbers, were not exposed in this security event.Â
Flickr was alerted to the vulnerability on February 5, 2026, according to notifications sent to users, and took action to shut down access to the compromised system within hours to mitigate further exposure.Â
While Flickr itself was not directly breached, a supply chain weakness created a significant security risk for its users. In response, Flickr has committed to conducting a thorough investigation, strengthening its system architecture, and enhancing its monitoring of third-party providers.Â
The company is urging affected users to remain vigilant against phishing attempts that may exploit the leaked data.
In other recent news, 1.4 million Betterment email addresses were exposed following a third-party breach, and the Marquis data breach was linked to the SonicWall hack.