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CSN Follow-Up: Another CAPTCHA Problem Hidden In Plain Sight

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Brute-Forcing Borrowers' PINs at the Swedish Board of Student Finance (CSN)

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PKI Is Hard - How Yubico Trusted OpenSSL And Got It Wrong

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Many Common Mobile Authenticator Apps Accept QR Codes for Modes They Don't Support

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Solution to 35C3 Junior CTF Challenge "Entrance"

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New Static Blog Using Hugo