Web Hack List

Later archive addition

Breaking Out HSTS (and HPKP) on Firefox, IE/Edge and (Possibly) Chrome

Firefox, IE/Edge and Chrome store HSTS and HPKP state in ways an attacker can remotely overwrite, so a site that should be locked to HTTPS can be pushed back to plaintext. A sniffing or man-in-the-middle attacker on the same network then reads credentials from sites that had enforced HTTPS.

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