|Photo by Alan Cleaver|
Tweeting is very different from a private mail, private chat or other forms of private online communications, Sciarrino wrote.
"Those private dialogues would require a warrant based on probable cause in order to access the relevant information. " The same is not true of public tweets, he noted.
The ruling elicited predictable groans from privacy rights groups. "We think the judge missed the point on the privacy analysis," said Marc Rotenberg, executive director of the Electronic Privacy Information Center (EPIC).
"It's one thing for the police to overhear a person shout an incriminating statement. We agree there would be no expectation of privacy" in those situations, Rotenberg said. "But when the police go to a communications service provider and demand that the company turn over records of a customer, that is a very different scenario."
In an amicus brief filed with the court, EPIC and other groups, including the Electronic Frontier Foundation and the American Civil Liberties Union, noted that prosecutors were not asking just for the content of Harris' tweets -- the subpoena also sought the date, time, and IP address Harris used each time he logged into his Twitter account over a three-month period.
The privacy groups contended that seeking such information without a warrant is a violation of Harris' First and Fourth Amendment rights.
You can read more about it in PC World's recent article, 'Twitter Ruling Disappoints, but Doesn't Surprise Privacy Advocates'.