Back in 2012, fellow professional password cracker d3ad0ne (who regretfully passed away in 2013) and I made short work out of the first LinkedIn password dump, cracking more than 90 percent of the 6.4 million password hashes in just under one week. Following that effort, I did a short write-up ironically titled The Final Word on the LinkedIn Leak.
But those 6.4 million unique hashes posted on a Russian password-cracking forum in June 2012 only accounted for a fraction of the total LinkedIn database. This second dump, on the other hand, contains 177.5 million password hashes for 164.6 million users, which aligns perfectly with LinkedIn’s user count in the second quarter of 2012.
