This map shows tens of thousands of Windows computers that were taken hostage by the software, a variant of the WannaCry ransomware, that were recorded by the security blog MalwareTech.

You remember Clippy. He was the animated paper clip who would pop up, uninvited, in Microsoft Office to state the obvious and offer unwanted advice: “It looks like you’re writing a letter.

Mel Bergstein was an early proponent of the idea that computers weren’t just about crunching numbers and would force a complete rethinking of corporate strategies. Mr. Bergstein in the late ...