Definitions by fallax

Fallax

Latin for "deceptive" or "treacherous," the root of the word "fallacy." Also the name of a phishing simulation tool that companies use to send realistic fake phishing emails to their own staff. Being "fallaxed" means falling for one of them: you click, and type your password into the fake login page.

"Fallax gratia et vana est pulchritudo." (Proverbs 31:30: "Charm is deceptive, and beauty is fleeting.")

"That Microsoft 'password expires in one hour' email looked so real. I typed in my password and got fallaxed. At least the page showed me the sender address was off by one letter."

Fallax by fallax October 3, 2026