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Spam E-Mail Operator's Faulty Backup Leaks 1.37B Addresses

One of the largest spam operations in the world has exposed its entire operation to the public, leaking its database of 1.37bn email addresses thanks to a faulty backup.

As well as email addresses, the holy grail of the spam operation, personal information including real names, IP addresses and physical addresses have also been leaked, though on a smaller scale than the email information that makes up the bulk of the dataset.

According to security researchers at MacKeeper, the leaked information stems from an operation called River City Media, an email marketing firm that sends up to a billion messages a day to spam filters across the world.

“The situation presents a tangible threat to online privacy and security as it involves a database of 1.4bn email accounts combined with real names, user IP addresses, and often physical address,” said MacKeeper’s Chris Vickery. “Chances are that you, or at least someone you know, is affected.”

Vickery hasn’t managed to fully verify the leak, but says he has found addresses he knows are accurate in the database. And the source of the data, a snapshot of a backup made at some point in January 2017, accidentally published to the internet without any password protection, adds more credibility to the leak.

“Well-informed individuals did not choose to sign up for bulk advertisements over a billion times,” Vickery says. “The most likely scenario is a combination of techniques. One is called co-registration. That’s when you click on the ‘Submit’ or ‘I agree’ box next to all the small text on a website. Without knowing it, you have potentially agreed your personal details can be shared with affiliates of the site.”

Anti-spam organisation Spamhaus, working alongside MacKeeper and Vickery, has used the information contained in the leak to add River City Media’s details to its database, blacklisting the firm’s entire…

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