The US Government has filed a case against whistleblower Edward Snowden for publishing a book without first submitting it to the CIA and NSA for approval as required by non-disclosure agreements he signed with the two agencies while employed by them.

US security firm Immunity has started selling an exploit to take advantage of a flaw in Microsoft's proprietary remote desktop protocol. The vulnerability was revealed in May.

With the sentencing of former NSA contractor Harold Martin to nine years in prison for taking huge amounts of company data home, the identity of the Shadow Brokers, the group which leaked numerous NSA exploits on the Web three years ago, still remains unknown.