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British and Canadian spy agencies accumulated sensitive data on smartphone users, including location, app preferences, and unique device identifiers, by piggybacking on ubiquitous software from advertising and analytics companies, according to a document obtained by NSA whistleblower Edward Snowden. The document, included in a trove of Snowden material released by Der Spiegel on January 17, outlines a secret program run by the intelligence agencies called BADASS. The German newsweekly did not write about the BADASS document, attaching it to a broader article on cyberwarfare. According to The Intercept‘s analysis of the document, intelligence agents applied BADASS software filters to streams of intercepted internet traffic, plucking from that traffic unencrypted uploads from smartphones to servers run by advertising and analytics companies.

Programmers frequently embed code from a handful of such companies into their smartphone apps because it helps them answer a variety of questions: How often does a particular user open the app, and at what time of day? Where does the user live? Where does the user work? Where is the user right now? What’s the phone’s unique identifier? What version of Android or iOS is the device running? What’s the user’s IP address? Answers to those questions guide app upgrades and help target advertisements, benefits that help explain why tracking users is not only routine in the tech industry but also considered a best practice. For users, however, the smartphone data routinely provided to ad and analytics companies represents a major privacy threat. When combined together, the information fragments can be used to identify specific users, and when concentrated in the hands of a small number of companies, they have proven to be irresistibly convenient targets for those engaged in mass surveillance. Although the BADASS presentation appears to be roughly four years old, at least one player in the mobile advertising and analytics space, Google, acknowledges that its servers still routinely receive unencrypted uploads from Google code embedded in apps.

The government has now filed its Second Circuit brief in the dispute with Microsoft (discussed here, here, and here), challenging key assertions by Microsoft and its many amici, and making a strong argument that a warrant issued under the Stored Communications Act (SCA) requires Microsoft to turn over emails in its custody and control, regardless of whether they are being held (in this case in Dublin). After reading the government’s brief, I am increasingly convinced that nothing in the text, structure, purpose, or legislative history provides a definitive answer to the central issue in the case (a point that the government implicitly concedes), and that, as a result, the dispute really is a policy one. Should, or should not, the government be authorized to compel Microsoft and other ISPs to produce emails of other private communications located in a foreign nation? What are the ramifications of such an answer on the United States’ ability to protect private communications — including that of its citizens — stored within its borders? And what are the implications for the government’s ability (or lack thereof) to access sought-after evidence overseas?

The EU has slammed the US for its demand that Microsoft surrender overseas data – emails held on Irish servers – saying that the move could contravene international law. The US attempt to make Microsoft provide the emails prompted Viviane Reding, vice-president of the European Commission, to offer support to Microsoft and openly criticize the loss of personal information it could potentially involve. “The commission’s concern is that the extraterritorial application of foreign laws [and orders to companies based thereon] may be in breach of international law,” Reding wrote last week in a letter responding to questions from Dutch MEP Sophia in't Veld, reported the Financial Times on Monday. The move would “hurt the competitiveness of US cloud providers in general,” Microsoft said, adding that: “Microsoft and US technology companies have faced growing mistrust and concern about their ability to protect the privacy of personal information located outside the US.”

Reding added that the US “may impede the attainment of the protection of individuals guaranteed” under EU law. Her statement further echoes arguments laid out by Apple, Cisco, AT&T, and Verizon, which supported Microsoft against the US warrant. At the beginning of June, Microsoft compared the warrant to an authorization for federal agents ‘to break down the doors’ of its Dublin facility. Reding said the US should have leaned away from coercion and instead depended on mutual legal assistance treaties that facilitate law enforcement agency cooperation.

“Companies bound by EU data protection law who receive such a court order are caught in the middle of such situations where there is, as you say in your letter, a conflict of laws,” Reding wrote.

The security research team at Checkmarx has made something of a habit of uncovering alarming vulnerabilities, with past disclosures covering Amazon’s Alexa and Tinder. However, a  discovery of vulnerabilities affecting Google and Samsung smartphones, with the potential to impact hundreds of millions of Android users, is the biggest to date. What did the researchers discover? Oh, only a way for an attacker to take control of smartphone camera apps and remotely take photos, record video, spy on your conversations by recording them as you lift the phone to your ear, identify your location, and more. All of this performed silently, in the background, with the user none the wiser.