And this time it was not a group of hackers who did this. All it took, was a Google search by Australian security consultant Daniel Grzelak.
Daniel was searching for open userIds-password databases, which have been indexed by Google. He just entered the search term “filetype: sql hotmail gmail password” and after few hours and few tweaks, he stumbled upon sosasta database, with email IDs and password in plain text. He believes that it was the entire list of users on sosasta, which numbers to about 300,000.
I cannot see any press release by sosasta so far about this.