They found 711 million registrations used by spam

Troy Hunt, the renowned Australian information protection specialist and creator of Have I Been Pwned (HIBP), an internet resource to help you understand if you have been the victim of stealing one of your online registrations, alerts you to the huge amount of data on the web For an entry that is located on an open web server.

The discovery became available to Hunt, thanks to a French independent developer who named him the server in question. It has been able to download millions of records that contain e-mail addresses, related passwords, SMTP servers, ports, and more. A total of 711 million records. Their source is not known, though Hunt is convinced that much of the recordings are from the giant breakthrough in LinkedIn several years ago. In the opinion of the specialists, these records are used by a spamming named Onliner, through which hundreds of thousands of spam messages have been sent using legitimate addresses to overcome spam protection used by popular e-mail services. One of Onliner's main missions for years is the sending of a dangerous bank trojan, responsible for over 100,000 infected systems around the world. Hunt has uploaded HIBP records found on the web server, which can help you find out if any of your mail has become a spammer. 

And while your email may not be present in the huge HIBP base, never forget a few simple tips on using your email. Avoid signing up for postal services that do not provide a secure connection between you and the server that stores your data. Use a complicated, hard to guess password or a secret phrase that you can remember (such as k0Lk0p0zleM0zed @ sTane ?!) or password manager. Do not use the password or secret phrase on other sign-up sites. Do not use your official email to sign up where you drop, but rather make a special sign up for it. If available, include an additional authorization feature. And, of course, show good sense and healthy suspicion in your online quests.