On March 20, 2013, a cyberattack brought chaos to several banks and media outlets in South Korea. Then more ominously on December 23 last year, computers at the country’s nuclear operator were ...

QR codes are everywhere these days, from being printed onto receipts to chiseled into granite tombstones. [Will] came up with a way to modify existing QR codes, and his hack has the potential to cause ...

SEOUL, South Korea — On March 20, 2013, a cyberattack brought chaos to several banks and media outlets in South Korea. Then more ominously on December 23 last year, computers at the country’s nuclear ...

Corrections & Clarifications: A previous version of this story incorrectly identified to whom Edward Snowden released classified government information in 2013. Snowden gave the documents to multiple ...

Hacking the Nazis: The secret story of the women who broke Hitler’s codes Your email has been sent Of the 10,000-plus staff at the Government Code and Cypher School during World War II, two-thirds ...