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Britain's surveillance agency GCHQ, with aid from the US National Security Agency, intercepted and stored the webcam images of millions of internet users not suspected of wrongdoing, secret documents reveal.GCHQ files dating between 2008 and 2010 explicitly state that a surveillance program codenamed Optic Nerve collected still images of Yahoo webcam chats in bulk and saved them to agency databases, regardless of whether individual users were an intelligence target or not.In one six-month period in 2008 alone, the agency collected webcam imagery – including substantial quantities of sexually explicit communications – from more than 1.8 million Yahoo user accounts globally.Yahoo reacted furiously to the webcam interception when approached by the Guardian. The company denied any prior knowledge of the program, accusing the agencies of "a whole new level of violation of our users' privacy".

GCHQ does not have the technical means to make sure no images of UK or US citizens are collected and stored by the system, and there are no restrictions under UK law to prevent Americans' images being accessed by British analysts without an individual warrant.The documents also chronicle GCHQ's sustained struggle to keep the large store of sexually explicit imagery collected by Optic Nerve away from the eyes of its staff, though there is little discussion about the privacy implications of storing this material in the first place.

"Face detection has the potential to aid selection of useful images for 'mugshots' or even for face recognition by assessing the angle of the face," it reads. "The best images are ones where the person is facing the camera with their face upright."The agency did make efforts to limit analysts' ability to see webcam images, restricting bulk searches to metadata only.However, analysts were shown the faces of people with similar usernames to surveillance targets, potentially dragging in large numbers of innocent people. One document tells agency staff they were allowed to display "webcam images associated with similar Yahoo identifiers to your known target".Optic Nerve was based on collecting information from GCHQ's huge network of internet cable taps, which was then processed and fed into systems provided by the NSA. Webcam information was fed into NSA's XKeyscore search tool, and NSA research was used to build the tool which identified Yahoo's webcam traffic.

Top-secret documents reveal that the National Security Agency is dramatically expanding its ability to covertly hack into computers on a mass scale by using automated systems that reduce the level of human oversight in the process. The classified files – provided previously by NSA whistleblower Edward Snowden – contain new details about groundbreaking surveillance technology the agency has developed to infect potentially millions of computers worldwide with malware “implants.” The clandestine initiative enables the NSA to break into targeted computers and to siphon out data from foreign Internet and phone networks. The covert infrastructure that supports the hacking efforts operates from the agency’s headquarters in Fort Meade, Maryland, and from eavesdropping bases in the United Kingdom and Japan. GCHQ, the British intelligence agency, appears to have played an integral role in helping to develop the implants tactic.

The NSA began rapidly escalating its hacking efforts a decade ago. In 2004, according to secret internal records, the agency was managing a small network of only 100 to 150 implants. But over the next six to eight years, as an elite unit called Tailored Access Operations (TAO) recruited new hackers and developed new malware tools, the number of implants soared to tens of thousands. To penetrate foreign computer networks and monitor communications that it did not have access to through other means, the NSA wanted to go beyond the limits of traditional signals intelligence, or SIGINT, the agency’s term for the interception of electronic communications. Instead, it sought to broaden “active” surveillance methods – tactics designed to directly infiltrate a target’s computers or network devices. In the documents, the agency describes such techniques as “a more aggressive approach to SIGINT” and says that the TAO unit’s mission is to “aggressively scale” these operations. But the NSA recognized that managing a massive network of implants is too big a job for humans alone.

“One of the greatest challenges for active SIGINT/attack is scale,” explains the top-secret presentation from 2009. “Human ‘drivers’ limit ability for large-scale exploitation (humans tend to operate within their own environment, not taking into account the bigger picture).” The agency’s solution was TURBINE. Developed as part of TAO unit, it is described in the leaked documents as an “intelligent command and control capability” that enables “industrial-scale exploitation.”

The Federal Bureau of Investigation is taking the position that court warrants are not required when deploying cell-site simulators in public places. Nicknamed "stingrays," the devices are decoy cell towers that capture locations and identities of mobile phone users and can intercept calls and texts. The FBI made its position known during private briefings with staff members of Senate Judiciary Committee Chairman Patrick Leahy (D-Vt.) and Sen. Chuck Grassley (R-Iowa). In response, the two lawmakers wrote Attorney General Eric Holder and Homeland Security chief Jeh Johnson, maintaining they were "concerned about whether the FBI and other law enforcement agencies have adequately considered the privacy interests" of Americans. According to the letter, which was released last week: For example, we understand that the FBI’s new policy requires FBI agents to obtain a search warrant whenever a cell-site simulator is used as part of a FBI investigation or operation, unless one of several exceptions apply, including (among others): (1) cases that pose an imminent danger to public safety, (2) cases that involve a fugitive, or (3) cases in which the technology is used in public places or other locations at which the FBI deems there is no reasonable expectation of privacy.

The letter was prompted in part by a Wall Street Journal report in November that said the Justice Department was deploying small airplanes equipped with cell-site simulators that enabled "investigators to scoop data from tens of thousands of cellphones in a single flight, collecting their identifying information and general location." The bureau's position on Americans' privacy isn't surprising. The Obama Administration has repeatedly maintained that the public has no privacy in public places. It began making that argument as early as 2010, when it told a federal appeals court that the authorities should be allowed to affix GPS devices on vehicles and track a suspect's every move without court authorization. The Supreme Court, however, eventually ruled that warrants are required. What's more, the administration has argued that placing a webcam with pan-and-zoom capabilities on a utility pole to spy on a suspect at his or her residence was no different from a police officer's observation from the public right-of-way. A federal judge last month disagreed with the government's position, tossing evidence gathered by the webcam that was operated from afar.

In their letter, Leahy and Grassley complained that little is known about how stingrays, also known as ISMI catchers, are used by law enforcement agencies. The Harris Corp., a maker of the devices from Florida, includes non-disclosure clauses with buyers. Baltimore authorities cited a non-disclosure agreement to a judge in November as their grounds for refusing to say how they tracked a suspect's mobile phone. They eventually dropped charges rather than disclose their techniques. Further, sometimes the authorities simply lie to judges about their use or undertake other underhanded methods to prevent the public from knowing that the cell-site simulators are being used.

The first (and thus far only) roll-back of post-9/11 surveillance authorities was implemented over the weekend: The National Security Agency shuttered its program for collecting and holding the metadata of Americans’ phone calls under Section 215 of the Patriot Act. While bulk collection under Section 215 has ended, the government can obtain access to this information under the procedures specified in the USA Freedom Act. Indeed, some experts have argued that the Agency likely has access to more metadata because its earlier dragnet didn’t cover cell phones or Internet calling. In addition, the metadata of calls made by an individual in the United States to someone overseas and vice versa can still be collected in bulk — this takes place abroad under Executive Order 12333. No doubt the NSA wishes that this was the end of the surveillance reform story and the Paris attacks initially gave them an opening. John Brennan, the Director of the CIA, implied that the attacks were somehow related to “hand wringing” about spying and Sen. Tom Cotton (R-Ark.) introduced a bill to delay the shut down of the 215 program. Opponents of encryption were quick to say: “I told you so.”

But the facts that have emerged thus far tell a different story. It appears that much of the planning took place IRL (that’s “in real life” for those of you who don’t have teenagers). The attackers, several of whom were on law enforcement’s radar, communicated openly over the Internet. If France ever has a 9/11 Commission-type inquiry, it could well conclude that the Paris attacks were a failure of the intelligence agencies rather than a failure of intelligence authorities. Despite the passage of the USA Freedom Act, US surveillance authorities have remained largely intact. Section 702 of the FISA Amendments Act — which is the basis of programs like PRISM and the NSA’s Upstream collection of information from Internet cables — sunsets in the summer of 2017. While it’s difficult to predict the political environment that far out, meaningful reform of Section 702 faces significant obstacles. Unlike the Section 215 program, which was clearly aimed at Americans, Section 702 is supposedly targeted at foreigners and only picks up information about Americans “incidentally.” The NSA has refused to provide an estimate of how many Americans’ information it collects under Section 702, despite repeated requests from lawmakers and most recently a large cohort of advocates. The Section 215 program was held illegal by two federal courts (here and here), but civil attempts to challenge Section 702 have run into standing barriers. Finally, while two review panels concluded that the Section 215 program provided little counterterrorism benefit (here and here), they found that the Section 702 program had been useful.

There is, nonetheless, some pressure to narrow the reach of Section 702. The recent decision by the European Court of Justice in the safe harbor case suggests that data flows between Europe and the US may be restricted unless the PRISM program is modified to protect the information of Europeans (see here, here, and here for discussion of the decision and reform options). Pressure from Internet companies whose business is suffering — estimates run to the tune of $35 to 180 billion — as a result of disclosures about NSA spying may also nudge lawmakers towards reform. One of the courts currently considering criminal cases which rely on evidence derived from Section 702 surveillance may hold the program unconstitutional either on the basis of the Fourth Amendment or Article III for the reasons set out in this Brennan Center report. A federal district court in Colorado recently rejected such a challenge, although as explained in Steve’s post, the decision did not seriously explore the issues. Further litigation in the European courts too could have an impact on the debate.

Software created by the controversial UK-based Gamma Group International was used to spy on computers that appear to be located in the United States, the UK, Germany, Russia, Iran, and Bahrain, according to a leaked trove of documents analyzed by ProPublica. It's not clear whether the surveillance was conducted by governments or private entities. Customer e-mail addresses in the collection appeared to belong to a German surveillance company, an independent consultant in Dubai, the Bosnian and Hungarian Intelligence services, a Dutch law enforcement officer, and the Qatari government.

The leaked files—which were posted online by hackers—are the latest in a series of revelations about how state actors including repressive regimes have used Gamma's software to spy on dissidents, journalists, and activist groups. The documents, leaked last Saturday, could not be readily verified, but experts told ProPublica they believed them to be genuine. "I think it's highly unlikely that it's a fake," said Morgan Marquis-Bore, a security researcher who while at The Citizen Lab at the University of Toronto had analyzed Gamma Group's software and who authored an article about the leak on Thursday. The documents confirm many details that have already been reported about Gamma, such as that its tools were used to spy on Bahraini activists. Some documents in the trove contain metadata tied to e-mail addresses of several Gamma employees. Bill Marczak, another Gamma Group expert at the Citizen Lab, said that several dates in the documents correspond to publicly known events—such as the day that a particular Bahraini activist was hacked.

The leaked files contain more than 40 gigabytes of confidential technical material, including software code, internal memos, strategy reports, and user guides on how to use Gamma Group software suite called FinFisher. FinFisher enables customers to monitor secure Web traffic, Skype calls, webcams, and personal files. It is installed as malware on targets' computers and cell phones. A price list included in the trove lists a license of the software at almost $4 million. The documents reveal that Gamma uses technology from a French company called Vupen Security that sells so-called computer "exploits." Exploits include techniques called "zero days" for "popular software like Microsoft Office, Internet Explorer, Adobe Acrobat Reader, and many more." Zero days are exploits that have not yet been detected by the software maker and therefore are not blocked.