On July 11, 2012, a hacking group calling itself "D33DS Company" posted a file online containing approximately 450,000 login credentials and passwords from Yahoo Voice users.
[6] The full dump file containing the compromised user information was made available for download via BitTorrent, allowing for widespread distribution and potential misuse of the stolen credentials.
Using SQL injection techniques, the hackers were able to extract the data from Yahoo's servers and subsequently post the compromised information publicly online.
This meant that any hacker could potentially use the stolen email addresses and passwords to access other services, including Yahoo Mail, putting far more accounts at risk than just those directly affected by the Voice breach.
[4] In a statement accompanying the data dump, the hackers said: "We hope that the parties responsible for managing the security of this subdomain will take this as a wake-up call, and not as a threat."
This incident came shortly after other major data breaches at companies like LinkedIn, as well as similar attacks on Android Forums and Formspring, raising broader concerns about online security practices at the time.