Adrian Lamo: The Man Who Turned Manning In

The leak was not uncovered by network monitoring, forensic analysis or an intelligence operation. It came apart because a lonely 22-year-old told someone about it, and that someone told the government.

Who he was

Adrian Lamo became known in the early 2000s for breaking into the networks of large companies, sometimes telling them afterwards what he had found. He was convicted for one such intrusion and his reputation was built as much on the publicity as on the hacking.

By 2010 he was a recognisable figure in that world: a former offender who talked to journalists, gave interviews about security, and was known for having gone soft on the establishment or having grown up, depending on who you asked.

The conversations

In May 2010, weeks after the video had been published, Manning contacted Lamo online. Over several days she described what she had done, why, and how she had done it.

What the messages actually read like

The messages are not the confession of a hardened operator. They read as someone under enormous strain talking to a stranger who seemed to understand, in a part of the internet where that kind of conversation was normal. She discussed the video, the volume of material she had sent, her isolation in her unit and her identity.

What he did with them

He took them to the authorities. Within days he was speaking to US Army counterintelligence and to the FBI, and he handed over the logs. Manning was arrested in Iraq on 26 May 2010.

Portions of the conversations later appeared in press reporting and were used in the prosecution. Lamo himself became a witness at the court-martial.

• He took the logs to the authorities within days.
• He spoke to Army counterintelligence and the FBI.
• He became a witness at the court-martial that followed.

The reasons he gave

He argued, consistently, that the volume of material was the deciding factor. A single video of a contested engagement was one thing; hundreds of thousands of documents was, in his view, something that could get people killed, and he said he could not sit on knowledge of it.

The case against his account

He also said he tried to persuade Manning to stop before going to the authorities, and that he was acting to prevent harm rather than to punish anyone. Critics point out he had a longstanding relationship with journalists and an interest in remaining a public figure, and that he presented himself as a confidant while planning to report what he was told.

The argument, set out fairly

Both columns are real. The most that can be said with confidence is that he faced a genuine dilemma, made a choice, and never publicly wavered from it.

The fairest summary available

He faced a real dilemma, made a choice, and never publicly wavered from it. Both columns above are true at once, and anyone certain about this one has usually only read one of them.

Confiding in a stranger, and what the case made of it

One detail of this episode has outlived the argument about Lamo himself. The prosecution's strongest evidence came from a private conversation in which someone described their own actions to a person they barely knew.

That has become a standard lesson in security circles, taught to sources and to the journalists who handle them: the technical side of a leak is rarely what exposes it. People are. The submission systems newsrooms built after 2010 were designed with exactly this in mind, and several go out of their way to make it impossible for a reporter to learn who a source is even if they want to.

What happened to him

He became one of the most disliked people on the internet in certain circles, and stayed that way. He continued to give interviews defending his decision. He died in 2018, aged 37. The cause was never established with certainty.

By then Manning had served seven years and been released, and the material she disclosed had long since stopped being contentious in itself.

The hinge Adrian Lamo turned the case on

It is worth noticing how fragile this all was. The video was already public in April 2010 and nobody knew who had sent it. There was no technical trail leading to Manning that had produced an arrest. The case against her was built, in very large part, on her own account of what she had done, given voluntarily to a stranger.

How fragile the case against Manning was

Had that conversation not happened, it is entirely possible no one would ever have been prosecuted over any of it, and this archive would be about an anonymous leak instead of a named person who served seven years. The person who decided otherwise was not a prosecutor or an investigator. He was someone on the other end of a chat window. Manning's own account of that period is the other half of this page.

The wider question his choice sits inside — what a person owes an institution and what they owe the public — is set out in the page on whistleblowers. The material he decided to report on is described in the main account of the video, and the sequence of everything around it in the timeline.