There doesn’t seem to be a world of difference between an email address ending with “.ML” or one ending with “.MIL”. But that one simple oversight has been responsible for millions of US military emails sent to Mali, a state closely allied to Russia. The emails have often contained highly sensitive information, including diplomatic documents, passwords and travel details of top officials. A Dutch internet entrepreneur, Johannes Zuurbier, who manages Mali’s domain, first identified the problem almost a decade ago, reports the FT. But despite frequent warnings from Zuurbier that there is a real risk of the information being exploited by adversaries of the US, Washington’s creaking bureaucracy is yet to do anything about it.