Cyberwar watchers took notice this month when a leaked intelligence memo claimed Russian hackers had remotely destroyed a water pump at an Illinois utility. The report spawned dozens of sensational stories characterizing it as the first-ever reported destruction of U.S. infrastructure by a hacker. Some described it as America’s very own Stuxnet attack.

Except, it turns out, it wasn’t. Within a week of the report’s release, DHS bluntly contradicted the memo, saying that it could find no evidence that a hack occurred. In truth, the water pump simply burned out, as pumps are wont to do, and a government-funded intelligence center incorrectly linked the failure to an internet connection from a Russian IP address months earlier.