Written by Nick Heer.

User Fingerprinting Through Social Media Account Login Tokens

Robin Linus demonstrates an impressively straightforward technique for fingerprinting users by testing which social networks have an active login token. This reminds me a little of Epic Marketing’s equally simple history sniffing technique — albeit, in a much more limited capacity.

You should know that this link sniffs several popular sites with login forms, which, naturally, includes a couple of porn sharing sites. Depending on your workplace security settings, that might raise a red flag or two.