That means that when a government requests data from the company, they don’t find much. In addition to protecting communications, Signal collects vanishingly small amounts of data on its users. Work with Facebook and Google may mean more money for the organization, but the exact terms of those partnerships remain unknown. Signal is developed by Open Whisper Systems, a San Francisco-based nonprofit that, like many prominent internet freedom technologies, largely received its funding from U.S. After coming under intense and prolonged phishing attacks, Democratic presidential nominee Hillary Clinton’s campaign is now using Signal for communications. It’s used widely by journalists, dissidents and government officials around the world. The Signal app itself has been downloaded 5 million times in the Google Play store (Apple’s App Store doesn’t publish numbers). The technology behind Signal underlies encryption in products from Facebook, WhatsApp, and Google, reaching over 1 billion individuals, most of whom don’t even know it. Edward Snowden recommends it and Matthew Green, a prominent cryptographer at Johns Hopkins University, says the high quality of the code makes him drool in delight. Launched two years ago, Signal has long been heralded by security experts around the world. They call on researchers to continue the testing and analysis of Signal. “We have found no major flaws in its design, which is very encouraging,” the five researchers wrote. Researchers from the University of Oxford in the United Kingdom, Queensland University of Technology in Australia and McMaster University in Canada gave the messaging application a fervent thumbs up. But the technology passed a major test Tuesday after an international team of security researchers gave the messaging platform’s security glowing reviews in its first ever formal security audit. Signal is widely considered the gold standard of secure encrypted messaging apps but, until today, it hasn’t been subject to a fine-toothed audit.
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