Vals AI reported that Claude Fable 5.1 cracked Urquhart's 370-year-old Cyphral Distich. However, primary 1653 texts show the cipher is missing and extraction is impossible.
862-bit RSA-260 fell on September 3, 2026 after 35 years. I verified the posted factor in Python on an M4 Mac mini, traced the viral 'seven months by hand' story to a joke, and sized the compute from RSA-250's 2,700 core-years with the GNFS formula.
A regression in cryptographic signature validation introduced a CVSS 9.1 flaw into .NET 10.0. The Data Protection API implemented HMAC verification incompletely, opening the door to padding oracle attacks and forged authentication tokens.
