Cyber Attack, Hacking | featured news

Citigroup Inc said a cyber attack in May affected over 360,000 of its customers, or almost twice the initial number that the bank's figures had suggested. After a week of being pressured over its delayed disclosure of the data breach, the third largest U.S. bank by assets revealed more details in a statement late on Wednesday.

Spanish police arrested three suspected members of the so-called "Anonymous" group on Friday on charges of cyber-attacks against targets including Sony's PlayStation network, governments, businesses and banks.

Their cyber attacks on governments and corporations have seen the loose collective of hackers known only as “Anonymous” pass from obscurity to becoming the byword for online guerrilla warfare. Nevertheless, the group has remained an enigma.

Gawker Media Inc. is urging subscribers to change their passwords because hackers have found their way into the company's user databases.

The European websites of the online retailer Amazon go temporarily offline, amid ongoing threats against major sites by pro-Wikileak activists.