A judge has ordered Twitter to hand over information related to one of its members indirectly involved with the Occupy Boston protests.

Twitter lost a three-month battle to withhold the information of a user who was subpoenad for a criminal probe believed to be related to the Occupy Boston movement.

Twitter spokesman Matt Graves told The Boston Globe on Thursday that the social-networking site released user data for @pOiSAnOn, whose account is associated with the name "Guido Fawkes" and AntiSec.

On Dec. 14 the Suffolk County District Attorney issued an administrative subpoena requesting IP addresses for @pOisAnON, @OccupyBoston (ironically, not the official account of the movement), #BostonPD, and #dOxcak3 to assist in an "official criminal investigation." The request was sent days after the Boston police arrested en masse Occupy Boston protesters camped out in Dewey Square, an event which prompted Anonymous to hack into the BPD's website in February.

A spokesman for the Suffolk County D.A. told The Boston Herald it was satisfied with the information received this week.

“We are not interested in the information of a large number of people who have used those hashtags. This is an investigation into a specific criminal act, and not a political investigation,” said Jake Wark, a spokesman for the Suffolk County D.A. “Once we had some meaningful dialogue with Twitter, a very clear understanding of what was requested was ironed out and that narrowed the field of information that was provided today.”

The American Civil Liberties Union (ACLU), who represented "Guy Fawkes" in court, said in a statement that the decision amounted to a violation of the First Amendment.

"We continue to believe that our client has a constitutional right to speak, and to speak anonymously; and that this administrative subpoena both exceeded the scope of the administrative subpoena statute and infringed our client's rights under the First Amendment. With the turnover of these documents any subsequent review of these issues will be moot," it stated in response to the decision.

In December, ReadWriteWeb reported that Twitter ignored the Suffolk D.A.'s request for secrecy, and forwarded the subpoena to @pOiSAnOn in accordance to Twitter's "Guidelines for Law Enforcement:"

Twitter's policy is to notify users of requests for their information prior to disclosure unless we are prohibited from doing so by statute or court order (e.g., an order under 18 U.S.C. § 2705(b)).

Twitter, like most Internet giants, is still struggling to balance user privacy with the law. In January it announced it had developed a way to filter tweets that violated countries' specific restrictions on speech, like banning pro-Nazi content in Germany and France. The news infuriated users who feared Twitter would honor takedown requests from repressive regimes.