First known ransomware for Mac users arrives via infected Transmission BitTorrent client; Apple revokes developer certificate that enabled infected installs  —  Apple users targeted in first known Mac ransomware campaign  —  Apple Inc (AAPL.O) customers were targeted by hackers over the weekend …

Ray Tomlinson, inventor of email, dies at 74 from suspected heart attack  —  Email pioneer Ray Tomlinson dead at 74  —  Email pioneer Ray Tomlinson.  —  Raymond Tomlinson, the godfather of email, died Saturday morning of a suspected heart attack.  He was 74.

Coinbase CEO: Core team is a systemic risk that can lead to Bitcoin collapse this year; switch to Bitcoin Classic now, then look for more scalable solutions  —  What Happened At The Satoshi Roundtable  —  Last weekend I attended the Satoshi Roundtable conference along with Charlie Lee …

Uber, responding to customer service leak, says it received five rape claims and fewer than 170 sexual assault claims from December 2012 to August 2015  —  Internal Data Offers Glimpse At Uber Sex Assault Complaints  —  BuzzFeed News obtains internal data on rapes and sexual assaults lodged …

Spotify's new Fresh Finds playlists leverage hundreds of music blogs and review sites it crawls and its own early adopter users  —  Spotify is using 50,000 anonymous hipsters to find your next favorite song  —  Spotify's personalized Discover Weekly playlist has won millions of fans …

Sources: Commerce Department to place export restrictions on ZTE due to Iran sanctions violations, making it difficult for the firm to buy products from US  —  U.S. Commerce Department to place restrictions on China's ZTE  —  The U.S. Commerce Department is set to place export restrictions …

Amazon reverses course, says it is bringing back support for device encryption to tablets running Fire OS via a software update due this spring  —  Amazon reverses course on encryption for its Fire tablets  —  It's been only one day since — in the midst of a debate over encrypted devices …

Inside the Cunning, Unprecedented Hack of Ukraine's Power Grid  —  It was 3:30 p.m. last December 23, and residents of the Ivano-Frankivsk region of Western Ukraine were preparing to end their workday and head home through the cold winter streets.  Inside the Prykarpattyaoblenergo control center …

China is building software to collate data on citizens' jobs, hobbies, consumption habits, and more to predict terrorist acts  —  China Tries Its Hand at Pre-Crime  —  Beijing wants to identify subversives before they strike.  —  Shai Oster  —  China's effort to flush out threats …

Experts: FBI could crack terrorist's iPhone without Apple's help, but wants to set a legal precedent that would give them access to phone data with a warrant  —  Who Needs Apple When the FBI Could Hack Terrorist iPhone Itself  —  Experts say Feds could access data without going to court

DARPA's upcoming $2M Cyber Grand Challenge wants teams to build AI-based hacking software that can exploit rival teams' vulnerabilities while fixing their own  —  These engineers are developing artificially intelligent hackers  —  In a sign of the autonomous security of the future …

Samsung says it has no plans to buy Tidal  —  Samsung Says It Won't Buy Tidal (EXCLUSIVE)  —  Samsung has no plans to acquire Jay Z's Tidal music service, the company told Variety Friday.  —  “The rumor of Samsung acquiring Tidal is not true,” said Samsung spokesperson, breaking the company's silence on the matter.