twoheadedboy writes: Mozilla has sent British spyware pusher Gamma International a cease and desist letter, after a report showed how the surveillance software was being delivered under the guise of a Firefox executable. Gamma has come under fire in recent months after its spyware was found in use in countries with poor human rights records. Its FinSpy tool, which can infect smartphones and PCs, was seen in use in various nations run by apparently repressive regimes, including Bahrain, Egypt, Ethiopia, Turkmenistan and Vietnam. Mozilla isn't happy about how that spyware is getting on users' machines, however. "As an open source project trusted by hundreds of millions of people around the world, defending Mozilla’s trademarks from this abuse is vital to our brand, mission and continued success,” said Mozilla chief privacy officer Alex Fowler.