Two researchers helped a man find the lost password to his cryptocurrency wallet containing 43.6 BTC, valued at nearly $2.96 million at currency prices.

One of the researchers, Joe Grand, is a hardware hacker who had previously unearthed lost bitcoin held in a Trezor wallet. Grand explains in a video that he and his friend exploited a long-fixed vulnerability in the password generator RoboForm, which had been used to create the wallet's password to access the wallet. 

An anonymous man, dubbed Michael, had set up a cryptocurrency wallet sometime in 2013 and then used RoboForm to create its unique password. Michael held the password in an encrypted file, opting not to store it with RoboForm due to security concerns. 

However, when the encrypted file became corrupted, Michael no …