Eighteen-year-old hacker and suspected member of hacktivist group Lulz Security, Jake Davis, has been released on bail after appearing at City of Westminster Magistrate's Court.
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Police believe Davis to be known online as "Topiary", who appeared to control the LulzSec Twitter account which has remained silent since his arrest.
Davis is accused of unauthorised computer access and conspiracy to carry out a distributed denial of service (DDoS) attack on the website of the UK's Serious Organised Crime Agency (Soca).
Davis is to face five charges related to computer hacking in Southwark Crown Court on 30 August. Until then, he may not access the internet or ask others to do so for him, according to the Financial Times.
He was arrested last week by the Metropolitan Police's e-Crime Unit as part of an international investigation into LulzSec and parent hacking group Anonymous.
The international investigation has already led to nine arrests in the UK - including Ryan Cleary, 19, of Wickford, Essex - 16 arrests in the US and four in the Netherlands.
Cleary was charged with five offences under the Criminal Law and Computer Misuse Acts, including an alleged hacking attack against Soca's website.
Soca took its website offline for several hours on 20 June after what appeared to be a DDoS attack, for which LulzSec later claimed responsibility by tweeting: "Tango down - in the name of #AntiSec".
Announcing "Operation Anti-Security" (AntiSec), LulzSec had called on hacking groups to open fire on any government or agency that crosses their path.
Another teenager, believed to use the online nickname Tflow, has also been questioned in relation to LulzSec's attacks. The 16-year-old has not been named or charged.