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Index/Topics/Flow-Correlation Attacks

Flow-Correlation Attacks

A type of attack that matches timing and volume traces to identify user sessions

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Jan 20, 2026
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What known attacks or research papers have demonstrated deanonymization or correlation vulnerabilities in Private Relay?

Academic work has demonstrated that Apple iCloud Private Relay (PR) is susceptible to modern traffic-analysis techniques—website fingerprinting and flow-correlation attacks have been applied against P...

Feb 2, 2026

Can an ISP infer visited websites from Tor traffic patterns or timing?

Yes — under realistic threat models an ISP can sometimes infer which websites a user visits over by analyzing traffic patterns and timing, but success requires either powerful observation (seeing both...