Daily Tech Snippet: Wednesday, September 21

• Researchers remotely hack Tesla Model S: Chinese researchers announced Monday that they had discovered security vulnerabilities in the Tesla Model S that allowed them to take over the vehicle’s brakes and more without laying a finger on the car. While other researchers have hacked into Tesla vehicles, this appears to be the first time researchers were able to do so remotely — highlighting the security risks of the sophisticated software and online features now being built into vehicles. A video posted by the researchers from Tencent’s Keen Security Lab appears to show them controlling the vehicle's brakes, as well as manipulating its side mirrors, running the windshield wipers and popping the trunk while the car is in motion. The researchers were also able to manipulate some other features while the vehicle was parked, including opening the sunroof, controlling some of the vehicle’s lights and unlocking the doors, according to the video. In a blog post, the researchers wrote that they reported the vulnerabilities to Tesla, and the company confirmed the hack. The researchers only tested out their method on “multiple varieties of Tesla Model S,” but said that it’s “reasonable to assume that other Tesla models are affected." Tesla said in an emailed statement that it "deployed an over-the-air software update" to fix the problem within 10 days of being informed about the bug. The company said the vulnerabilities that Keen Security Lab uncovered would only be accessible under a very specific circumstance: when the vehicle’s Web browser was in use and the car was connected to a malicious WiFi hotspot. Tesla plans to reward the researchers under its bug bounty program, according to the statement. Tesla was the first automaker to roll out such a program, which offers cash rewards to independent researchers who help the company uncover problems in its software. The company pays up to $10,000 per bug.

• iPhone 7 Teardown Shows Margins Slimming on Storage, Displays: Apple Inc.’s iPhone margins have narrowed with the release of its latest smartphone line, the iPhone 7, with higher costs to provide greater storage options, a glossy black cover and more advanced displays, according to an analysis by IHS Inc. The component analysis firm estimates that the total manufacturing cost of an entry-level iPhone 7, a model with a 4.7-inch screen and 32 GB of storage, is $224.80. This compares with an updated IHS estimate of $200 for an entry-level iPhone 6S in 2015. IHS didn’t perform an analysis of the larger iPhone 7 Plus but said the costs are likely higher than last year’s iPhone 6S Plus due to the presence of additional components. Based on the IHS breakdown, the margins on the 4.7-inch iPhones have narrowed as Apple maintained the $649 starting price, but the company seems to have offset this by raising the price of the iPhone 7 Plus. The iPhone 7 Plus costs $769 for a model with 32 GB of storage compared with last year’s $749 entry-level price. Apple is also holding up its overall margins by reserving the more costly glossy black manufacturing process for the 128 GB and 256 GB models. While Apple hasn’t released sales numbers for the iPhone 7 line’s opening weekend, the company indicated its initial supply sold out. Despite early knocks against the device for its lack of a headphone jack, reviews have been positive and the company’s stock has gained 5.4 percent since the new phone was introduced about two weeks ago. The iPhone represented about 66 percent of Apple’s revenue last year, and the product’s unit sales, margins, and average-sales-price are critical to the company’s quarterly earnings results.

• Microsoft Plans Another $40 Billion Buyback, Boosts Dividend: Microsoft Corp.’s board authorized the buyback of an additional $40 billion of stock on top of an existing $40 billion repurchase program it will finish by year’s end, keeping up a strategy of returning money to shareholders as its cash pile grows. The Redmond, Washington-based software maker also raised its quarterly dividend by 8.3 percent to 39 cents a share, according to a statement Tuesday. The company’s stock has jumped 31 percent in the past year, giving Microsoft a market capitalization of $442.7 billion -- the third-largest in the Standard & Poor’s 500 Index. Chief Executive Officer Satya Nadella has been working to jump-start revenue growth -- which analysts project will be 2 percent this fiscal year after a decline of 2 percent the previous year -- amid continued restructuring efforts related to the failed acquisition of Nokia Oyj’s phone business. Since Nadella took the helm in 2014, the company’s cloud and internet-based Office software businesses have fueled growth and boosted investor optimism. The stock this year has been hovering close to a 1999 record high.Microsoft shares rose about 1 percent in extended trading after the announcement. They slipped less than 1 percent to $56.81 at the close in New York.The company had $113.2 billion in cash and short-term investments as of June 30. Microsoft is spending about $26 billion to acquire LinkedIn Corp., a deal that will be largely funded by debt sales.