EFF urged the United States Supreme Court to ensure that modern communications methods such as text messages retain the constitutional privacy protections applied to earlier technologies in an amicus brief filed in City of Ontario v. Quon.
EFF was joined on this brief by the America Civil Liberties Union...

EFF the Center for Democracy and Technology (CDT) and the American Civil Liberties Union (ACLU) urged a Kentucky Court of Appeals in November of 2008 to vacate a lower court's order authorizing the seizure of more than 100 Internet domain names associated with websites operating around the globe. The seizure...

EFF and a coalition of public interest groups and law professors have asked a California appeals court to protect craiglist from a lawsuit that could spur websites to be less helpful in responding to complaints about user behavior.
In Scott P. v. craigslist Inc. the plaintiff complained about a...

EFF filed suit on November 1 2007 against the man behind "craigslist-perverts.org" -- a website that publicized responses to fake personal advertisements posted on Craigslist.org -- on behalf of an online journalist who criticized the controversial outing campaign and received legal threats in return.
In a March 2007 settlement...

EFF handled this leading case with the ACLU of Washington State. In it a federal district court in the Eastern District of Washington held that the identities of 23 participants in an Infospace chatroom were protected from disclosure. The case contained a strong endorsement of the right to anonymous speech...