If you are unaware, the security standard HTTP Strict Transport Security (HSTS) can be abused as a 'supercookie' to surreptitiously track users of almost every modern web browser online without their knowledge even when they use "private browsing." Apple has now added mitigations to its open-source browser infrastructure WebKit that underpins its Safari web browser to prevent HSTS abuse after ![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_vUNWfapnj6ZmEkTgzDga8sumj10-fGIteM5TCtCJNPmrRQ8-XQ-IHq7rwMVb5sqmLRnbbQpQesknKyTwivgnTFLfLpeRmfjp1tdts8MEMvslkIge1iPQxfEa01eE4twQ=s0-d)
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