Xfinity Security Breach 2025. Comcast, the largest cable operator in the u.s., said personal data for approximately 35.9 million customers of its xfinity services may have been illegally accessed. Comcast, the parent company of xfinity, sent a notice to customers monday saying there was unauthorized access to its internal systems as a result of a vulnerability in software from cloud.

Comcast’s cmcsa +0.8% internet service arm, xfinity, suffered a major data breach, compromising the personal information of nearly 36 million customers late last year. Comcast xfinity leaked the personal information of nearly 36 million customers in a massive data breach stemming from an exploited citrix vulnerability.