Snowden leak: NSA snooped on Chicago law firm

The government of Indonesia had retained the law firm for help in trade talks, according to the February 2013 document. It reports that the N.S.A.’s Australian counterpart, the Australian Signals Directorate, notified the agency that it was conducting surveillance of the talks, including communications between Indonesian officials and the American law firm, and offered to share the information. The Australians told officials at an N.S.A. liaison office in Canberra, Australia, that information covered by attorney-client privilege may be included in the intelligence gathering, according to the document, a monthly bulletin from the Canberra office. The law firm was not identified, but Mayer Brown, a Chicago-based firm with a global practice, was then advising the Indonesian government on trade issues.