After 33 years, Bernardo Quintero decided it was time to find the person who changed his life — the anonymous programmer who created a computer virus that had infected his university decades earlier.

Companies are scrambling to deal with the glut. Credit...Mojo Wang Supported by By Mike Isaac and Erin Griffith Reporting from San Francisco When a financial services company recently began using ...

For decades, he criticized the industry’s lax attitudes toward computer security and individual digital privacy. He also developed solutions. By John Markoff In November 1952, a Harvard sophomore, ...