An archive containing data purportedly scraped from 500 million LinkedIn profiles has been put for sale on a popular hacker forum, with another 2 million records leaked as a proof-of-concept sample by the post author.
The four leaked files contain information about the users whose data has been allegedly scraped by the threat actor, including their full names, email addresses, phone numbers, workplace information, and more.
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While users on the hacker forum can view the leaked samples for about $2 worth of forum credits, the threat actor appears to be auctioning the much-larger 500 million user database for at least a 4-digit sum, presumably in bitcoin.
The author of the post claims that the data was scraped from LinkedIn. Our investigation team was able to confirm this by looking at the samples provided on the hacker forum. However, it’s unclear whether the threat actor is selling up-to-date LinkedIn profiles, or if the data has been taken or aggregated from a previous breach suffered by LinkedIn or other companies.
We asked LinkedIn if they could confirm that the leak was genuine, and whether they have alerted their users and clients, but we have received no reply from the company at the time of writing this report.
What was leaked?
Based on the samples we saw from the leaked files, they appear to contain a variety of mostly professional information from LinkedIn profiles, including:
An example of leaked data:
What’s the impact of the leak?
The data from the leaked files can be used by threat actors against LinkedIn users in multiple ways by:
The leaked files appear to only contain LinkedIn profile information – we did not find any deeply sensitive data like credit card details or legal documents in the sample posted by the threat actor. With that said, even an email address can be enough for a competent cybercriminal to cause real damage.
Particularly determined attackers can combine information found in the leaked files with other data breaches in order to create detailed profiles of their potential victims. With such information in hand, they can stage much more convincing phishing and social engineering attacks or even commit identity theft against the people whose information has been exposed on the hacker forum.
If you suspect that your LinkedIn profile data might have been scraped by threat actors, we recommend you:
Also, watch out for potential phishing emails and text messages. Again, don’t click on anything suspicious or respond to anyone you don’t know.
I have made an interview on this topic that is available in Italian Language here
About the author: CyberNews Team
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(SecurityAffairs – hacking, data scraping)