A New Path to Better Cybersecurity

Hackers breached the computer systems of major retailers this year. What can be done?

It was a terrible year for the health of computer systems. Cyberthieves stole credit- and debit-card numbers from up to 56 million customers of the retail giant Home Depot, even more than the 40 million they stole in 2013 from Target. At JPMorgan Chase, 76 million bank accounts were compromised. The Heartbleed bug poked a big hole in widely used encryption software, and the Bash bug exposed millions of computers to malware. A Russian gang made off with more than a billion email addresses and pa...