Safari Flaw Exposes Browsing History and Google Usernames Across Devices

Apple was alerted to a significant security issue in Safari last year.

Security researchers at FingerprintJS identified that this vulnerability affects Safari 15 across all compatible devices. The flaw also impacts other browsers operating on iOS 15 and iPadOS 15 platforms.

Due to the way IndexedDB standards are implemented, software stores data locally on users' devices. Typically, only the website that created a database can access its stored data.

However, Safari creates new, empty databases with identical names for every window and tab each time access is attempted. This behavior allows third-party websites to detect other pages a user is visiting.

Moreover, services like YouTube, Google Calendar, and other Google applications embed usernames within the names of their local databases. Cybercriminals exploiting this flaw can extract additional personal information such as full names and profile photos associated with the accounts.

FingerprintJS has developed a demonstration site showcasing this vulnerability by revealing recent Safari activity. Although Apple was notified on November 21, 2021, the issue remains unresolved, leaving users at risk.

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