Hackers have obtained credentials for more than 68 million accounts for online cloud storage platform Dropbox from a known 2012 data breach.
Dropbox has confirmed the breach and already notified its customers of a potential forced password resets, though the initial announcement failed to specify the exact number of affected users.
However, in a selection of files obtained through sources in the database trading community and breach notification service Leakbase, Motherboard found around 5GB of files containing details on 68,680,741 accounts, which includes email addresses and hashed (and salted) passwords for Dropbox users.
An unnamed Dropbox employee verified the legitimacy of the data.
Out of 68 Million, almost 32 Million passwords are secured using the strong hashing function “BCrypt,” making difficult for hackers to obtain users’ actual passwords, while the rest of the passwords are hashed with the SHA-1 hashing algorithm.
These password hashes also believed to have used a Salt – a random string added to the hashing process to further strengthen passwords in order to make it more difficult for hackers to crack them.