Alan Paller, director of research at SANS Institute, a computer-security organization, said that the level of cyberattacks, including against power companies and critical infrastructure, has shot up in the last seven or eight months.

WSJ: US weighs tougher action over China cyberattacks

Kerberos gained pre-eminence because it is clever, and because its developers, computer scientists at the Massachusetts Institute of Technology, released the source code, which let security experts around the world debug and refine the program line by line.

ECONOMIST: Microsoft