> Six years after the AIDS Trojan was first unleashed, two pioneering cryptographers — Adam L. Young and Moti M. Yung — patched the holes in Popp’s leaky progra

> Six years after the AIDS Trojan was first unleashed, two pioneering cryptographers — Adam L. Young and Moti M. Yung — patched the holes in Popp’s leaky programming by developing a class of algorithms known as public-key cryptography. I'm guessing they mean "Cryptovirology", not public-key cryptography. Public-key cryptography goes back to the 70's.