英国《卫报》调查显示，美国电脑黑客地下组织已被联邦调查局（FBI）和特勤局大范围渗透，预计已有四分之一的黑客成为FBI的线人，黑客之间的相互猜疑和不信任与日俱增。据悉，美国网络警察多通过重刑威胁等手段迫使网络犯罪人员与其合作，协助调查。调查指出，用以交易窃取身份及信用卡号码等信息的非法论坛多由此类卧底黑客控制，FBI探员也会伪装成身份窃取高手混入论坛并成为版主，经由此渠道获取的情报已经将十几名罪犯送入监狱。电脑黑客季刊《2600》的记者表示，很多黑客不熟悉相关法律，在警方重裁的威胁下，很多黑客都开始为政府服务，这也使得黑客彼此之间的关系变得非常敏感。

　　The underground world of computer hackers has been so thoroughly infiltrated in the US by the FBI and secret service that it is now riddled with paranoia and mistrust, with an estimated one in four hackers secretly informing on their peers, a Guardian investigation has established.

　　Cyber policing units have had such success in forcing online criminals to co-operate with their investigations through the threat of long prison sentences that they have managed to create an army of informants deep inside the hacking community.

　　In some cases, popular illegal forums used by cyber criminals as marketplaces for stolen identities and credit card numbers have been run by hacker turncoats acting as FBI moles. In others, undercover FBI agents posing as "carders" – hackers specialising in ID theft – have themselves taken over the management of crime forums, using the intelligence gathered to put dozens of people behind bars.

　　So ubiquitous has the FBI informant network become that Eric Corley, who publishes the hacker quarterly, 2600, has estimated that 25% of hackers in the US may have been recruited by the federal authorities to be their eyes and ears. "Owing to the harsh penalties involved and the relative inexperience with the law that many hackers have, they are rather susceptible to intimidation," Corley told the Guardian.

　　"It makes for very tense relationships," said John Young, who runs Cryptome, a website depository for secret documents along the lines of WikiLeaks. "There are dozens and dozens of hackers who have been shopped by people they thought they trusted."

　　The best-known example of the phenomenon is Adrian Lamo, a convicted hacker who turned informant on Bradley Manning, who is suspected of passing secret documents to WikiLeaks. Manning had entered into a prolonged instant messaging conversation with Lamo, whom he trusted and asked for advice. Lamo repaid that trust by promptly handing over the 23-year-old intelligence specialist to the military authorities. Manning has now been in custody for more than a year.

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