Comcast Xfinity data breach affects over 35 million people


A photo showing an Xfinity storefront
Image: Xfinity

Comcast is notifying Xfinity customers of a “data security incident” it says resulted in the theft of customer information, including usernames, passwords, contact information, partial social security numbers, and more. In a notice on Monday, Xfinity said “there was unauthorized access” to its systems from October 16th to October 19th, 2023.

BleepingComputer linked this breach notice published in the state of Maine, which shows the total number of people affected by the breach is 35,879,455, including over 50,000 people in Maine.

Xfinity traces the breach to a security vulnerability disclosed by cloud computing company Citrix, which began alerting customers about a flaw in software Xfinity and other companies use on October 10th. While...

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