The USENIX Association is the Advanced Computing Systems Association. It was founded in 1975 under the name "Unix Users Group," focusing primarily on the study and development of Unix and similar systems. In June 1977, a lawyer from AT&T Corporation informed the group that they could not use the word UNIX as it was a trademark of Western Electric (the manufacturing arm of AT&T until 1995), which led to the change of name to USENIX. It has since grown into a respected organization among practitioners, developers, and researchers of computer operating systems more generally. Since its founding, it has published a technical journal entitled ;login:.