4.3 billion job documents left unsecured online — names, emails, phone numbers and LinkedIn data exposed

An open lock depicting a data breach
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An unprotected database was recently discovered online which contained over 16 terabytes of professional and corporate data, exposing more than four billion records worth of personal information. According to researchers working with Cybernews, this is one of the largest lead generation datasets to ever be uncovered on the open internet and it includes LinkedIn profiles and handles as well as other employment and personal details.

The other details mentioned include contract information, corporate relationships and employment histories from the detailed LinkedIn derived profiles. Some of the dataset collections exposed personal details such as full names, phone numbers, LinkedIn URLs and profile handles, position titles, employers, employment histories, education, degrees, certifications, location data, languages, skills, functions, social media accounts, image URLs (photos) and more.

How to stay safe after a data leak

A close-up photograph of a person's hands typing on a backlit laptop keyboard

(Image credit: Getty Images)

Just like with any other data breach or data leak, you'll want to focus on a security overhaul by making sure that your passwords are all updated – especially for any accounts involved in the breach. So in this case, your LinkedIn and email accounts as well as any other high-profile accounts like financial ones. Using one of the best password manager to generate and then store new, secure passwords for you will certainly make this easier.

You'll also want to keep an eye out for phishing attempts and social engineering attacks. As such, you'll want to be on alert for anyone sending texts, emails or even phone calls trying to get you to give out personal information or pressuring you to click on a link, download an attachment or app or go to a website.

Signing up for one of the best identity theft protection services is also never a bad idea, particularly because these services work best if they can watch out for your personal information ahead of time before an issue occurs.

Given that all of the information contained in this leak was likely publicly available, it's not illegal for companies to collect it. However, failing to secure a database of this size properly does have legal ramifications. I'll update this story when and if we learn more about why this data was collected in the first place and if anyone is going to be held accountable for the leak.


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Amber Bouman
Senior Editor Security

Amber Bouman is the senior security editor at Tom's Guide where she writes about antivirus software, home security, identity theft and more. She has long had an interest in personal security, both online and off, and also has an appreciation for martial arts and edged weapons. With over two decades of experience working in tech journalism, Amber has written for a number of publications including PC World, Maximum PC, Tech Hive, and Engadget covering everything from smartphones to smart breast pumps. 

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