Leak compromises US Security effort - AGAIN.

If this is true - heads should roll...

but they won't.

Al Qaeda's Internet communications system has suddenly gone dark to American intelligence after the leak of Osama bin Laden's September 11 speech inadvertently disclosed the fact that we had penetrated the enemy's system.

The intelligence blunder started with what appeared at the time as an American intelligence victory, namely that the federal government had intercepted, a full four days before it was to be aired, a video of Osama bin Laden's first appearance in three years in a video address marking the sixth anniversary of the attacks of September 11, 2001. On the morning of September 7, the Web site of ABC News posted excerpts from the speech.

But the disclosure from ABC and later other news organizations tipped off Qaeda's internal security division that the organization's Internet communications system, known among American intelligence analysts as Obelisk, was compromised.

Read it all here.

You can see the ABC report here. It cites "intelligence sources". The reporter? None other than Brian Ross.

Update: Rusty over at The Jawa Report has a little different take on the "leak". He's not so sure there was one and even if there were? We still pwn the cybershahids, says Dr. Rusty.

Another Update: This from WaPo. Names are named...more details.

She spoke first with White House counsel Fred F. Fielding, whom she had previously met, and then with Joel Bagnal, deputy assistant to the president for homeland security. Both expressed interest in obtaining a copy, and Bagnal suggested that she send a copy to Michael Leiter, who holds the No. 2 job at the National Counterterrorism Center.

Administration and intelligence officials would not comment on whether they had obtained the video separately. Katz said Fielding and Bagnal made it clear to her that the White House did not possess a copy at the time she offered hers.

Around 10 a.m. on Sept. 7, Katz sent both Leiter and Fielding an e-mail with a link to a private SITE Web page containing the video and an English transcript. "Please understand the necessity for secrecy," Katz wrote in her e-mail. "We ask you not to distribute . . . [as] it could harm our investigations."

Fielding replied with an e-mail expressing gratitude to Katz. "It is you who deserves the thanks," he wrote, according to a copy of the message. There was no record of a response from Leiter or the national intelligence director's office.

Exactly what happened next is unclear. But within minutes of Katz's e-mail to the White House, government-registered computers began downloading the video from SITE's server, according to a log of file transfers. The records show dozens of downloads over the next three hours from computers with addresses registered to defense and intelligence agencies.

Can you say sieve?