Xfinity Data Breach 2025 Reddit. Comcast is notifying xfinity customers of a data breach that exposed hashed passwords and usernames. The breach led to unauthorized access to customer information, including usernames, hashed.

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, 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.