US military emails mistakenly sent to Mali for years due to ".MIL" typo, exposing sensitive data

Millions of US military emails have been misdirected to Mali's .ML domain instead of .MIL due to a common typo over the past decade.
Dutch entrepreneur Johannes Zuurbier tried unsuccessfully to alert US officials about the issue since 2013.
The misdirected emails contained sensitive information about military personnel, facilities, travel plans, medical data, and more.
With Zuurbier's contract expiring, the Malian government, a Russian ally, will soon gain access to the emails.
The Pentagon has implemented some controls but cannot fully prevent the continued misdirection of emails due to the typo.