Internet vigilante group Anonymous denied involvement on Thursday in the theft of personal information from over 100 million Sony PlayStation and Online Entertainment network accounts.Sony, in a letter to a US congressional committee released Wednesday, said hackers had planted a file named “Anonymous” on the servers of the Sony Online Entertainment network at around the time members of the group carried out denial of service (DDoS) attacks on Sony servers.
The Japanese electronics company stopped short of directly accusing Anonymous of carrying out the data theft but said it bore some responsibility. In a typical DDoS attack, a large number of computers are commanded to simultaneously visit a website, overwhelming its servers, slowing service or knocking it offline completely.
Anonymous, which carried out similar attacks last year against US companies which withdrew services to WikiLeaks, had vowed retribution against Sony for taking legal action against hackers who cracked PlayStation 3 (PS3) defenses to change console operating software.