Arstechnica
In 2009, one or more prestigious researchers received a CD by mail that contained pictures and other materials from a recent scientific conference they attended in Houston. The scientists didn't know it then, but the disc also delivered a malicious payload developed by a highly advanced hacking operation that had been active since at least 2001.
The CD, it seems, was tampered with on its way through the mail.
It wasn't the first time the operators—dubbed the "Equation Group" by researchers from Moscow-based Kaspersky Lab—had secretly intercepted a package in transit, booby-trapped its contents, and sent it to its intended destination.