Ms. Ullman explains that on one occasion in her career as a software engineer she tried to fix some code with what she thought was a tiny change and she succeeded in bringing the whole system down.
The person familiar with the matter said that the attackers gained access to Google's computer code by compromising a workstation used by a Google engineer.
They capture samples via honey pots and customer reports, un-package them, reverse engineer the executables so they can see the source code, and try to figure out what the malware is doing.
Singleton (1916-99), the brilliant electrical engineer and cofounder of Teledyne, who reached out to Benioff after using some of his Apple code to create a chess game.