By msmash from Slashdot's better-late-than-never department
OpenBSD's Meltdown patch has landed, in the form of a Version 11 code update that separates user memory pages from the kernel's -- pretty much the same approach as was taken in the Linux kernel. From a report: A few days after the Meltdown/Spectre bugs emerged in January, OpenBSD's Phillip Guenther responded to user concerns with a post saying the operating system's developers were working out what to do. Now he's revealed the approach used to fix the free OS: "When a syscall, trap, or interrupt takes a CPU from userspace to kernel the trampoline code switches page tables, switches stacks to the thread's real kernel stack, then copies over the necessary bits from the trampoline stack. On return to userspace the opposite occurs: recreate the iretq frame on the trampoline stack, switch stack, switch page tables, and return to userspace." That explanation is somewhat obscure to non-developers, but there's a more readable discussion of what the project's developers had in mind from January, here.Read Replies (0)
By msmash from Slashdot's welcome-to-2018 department
Marco Arment: App developers sometimes ask me what they should do when their features, designs, or entire apps are copied by competitors. Legally, there's not a lot you can do about it: Copyright protects your icon, images, other creative resources, and source code. You automatically have copyright protection, but it's easy to evade with minor variations. App stores don't enforce it easily unless resources have been copied exactly. Trademarks protect names, logos, and slogans. They cover minor variations as well, and app stores enforce trademarks more easily, but they're costly to register and only apply in narrow areas. Only assholes get patents. They can be a huge PR mistake, and they're a fool's errand: even if you get one ($20,000+ later), you can't afford to use it against any adversary big enough to matter. Don't be an asshole or a fool. Don't get software patents. If someone literally copied your assets or got too close to your trademarked name, you need to file takedowns or legal complaints, but that's rarely done by anyone big enough to matter. If a competitor just adds a feature or design similar to one of yours, you usually can't do anything. You can publicly call out a copy, but you won't come out of it looking good. [...] Nobody else will care as much as you do. Nobody cares who was first, and nobody cares who copied who. The public won't defend you.Read Replies (0)
By BeauHD from Slashdot's growing-pains department
An anonymous reader quotes a report from Quartz, written by Per Bylund, assistant professor at Oklahoma State University: Analysts discuss the automation of jobs as if robots are rising from the sea like Godzilla, rampaging through the Tokyo of stable employment, and leaving only chaos in their wake. According to data from PWC, 38% of jobs in the U.S. could become automated by the early 2030s. Meanwhile, a report from Ball State University's Center for Business and Economic Research warned that half of all American jobs could be replaced by automation. These prophecies of doom fail to recognize that automation and increased productivity are nothing new. From the cotton gin to the computer, automation has been happening for centuries. Consider the way automation has improved the mining industry over the past 100 years. Without machines, humans were forced to crawl into unstable passageways and chip away at rocks with primitive tools while avoiding the ever-present dangers of gas poisoning and cave-ins. Not only was this approach terrible for health, but it was also a highly inefficient use of skilled human laborers. With machines doing the heavy lifting, society was able to dedicate resources to building, servicing, and running the machinery.
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By BeauHD from Slashdot's ease-of-mind department
According to authors of a groundbreaking study, antidepressants really do work in treating depression, though some are more effective than others. "Millions more people around the world should be prescribed pills or offered talking therapies, which work equally well for moderate to severe depression, say the doctors, noting that just one in six people receive proper treatment in the rich world -- and one in 27 in the developing world," reports The Guardian. From the report: "Antidepressants are an effective tool for depression. Untreated depression is a huge problem because of the burden to society," said Andrea Cipriani of the NIHR Oxford Health Biomedical Research Centre, who led the study. The debate over antidepressants has unfortunately often been ideological, said Cipriani. Some doctors and patients have doubts over whether they work at all and point to the big placebo effect -- in trials, those given dummy pills also improve to some degree. Some people suspect drug companies of fiddling trial results. Some patients simply do not want to take pills for a mental health condition. The study published in the Lancet took six years, Cipriani said, and included all the published and unpublished data that the scientists could find. It was carried out by a team of international experts. They looked at results after eight weeks of more than 500 trials involving either a drug versus placebo or comparing two different medicines. The most famous antidepressant of them all, Prozac -- now out of patent and known by its generic name, fluoxetine -- was one of the least effective but best tolerated, measured by a low drop-out rate in the trials or fewer side-effects reported. The most effective of the drugs was amitriptyline, which was the sixth best tolerated.Read Replies (0)
By BeauHD from Slashdot's explosions-in-the-sky department
New submitter Rotten shares a report from Gizmodo: Amateur astronomer Victor Buso was testing his camera-telescope setup in Argentina back in September 2016, pointing his Newtonian telescope at a spiral galaxy called NGC613. He collected light from the galaxy for the next hour and a half, taking short exposures to keep out the Santa Fe city lights. When he looked at his images, he realized he'd captured a potential supernova -- an enormous flash of light an energy bursting off of a distant star. Buso took more data and informed Argentine observatories, who announced the outcome of their follow-up observations today: "the serendipitous discovery of a newly born, normal type IIb supernova," according to the paper published in Nature. Not only did this demonstrate the importance of amateur astronomy, but Buso's images also provided evidence of the brief initial shockwave from the supernova, a phenomenon that telescopes rarely capture, since they'd have to be looking at the exact right place in the sky at the right time. Buso didn't just discover a supernova, though. He also presented evidence for the "long-sought shock-breakout phase," as the scientists write, an explosion of energy theorized to emanate from a shock wave at the supernova's source. The researchers point out that it's hard to generalize from a single supernova.Read Replies (0)
By BeauHD from Slashdot's update-required department
An anonymous reader quotes a report from ZDNet: U.S. border officials have failed to cryptographically verify the passports of visitors to the U.S. for more than a decade -- because the government didn't have the proper software. The revelation comes from a letter by Sens. Ron Wyden (D-OR) and Claire McCaskill (D-MO), who wrote to U.S. Customs and Border Protection (CPB) acting commissioner Kevin K. McAleenan to demand answers. E-passports have an electronic chip containing cryptographic information and machine-readable text, making it easy to verify a passport's authenticity and integrity. That cryptographic information makes it almost impossible to forge a passport, and it helps to protect against identity theft. Introduced in 2007, all newly issued passports are now e-passports. Citizens of the 38 countries on the visa waiver list must have an e-passport in order to be admitted to the U.S. But according to the senators' letter, sent Thursday, border staff "lacks the technical capabilities to verify e-passport chips." Although border staff have deployed e-passport readers at most ports of entry, "CBP does not have the software necessary to authenticate the information stored on the e-passport chips." "Specifically, CBP cannot verify the digital signatures stored on the e-passport, which means that CBP is unable to determine if the data stored on the smart chips has been tampered with or forged," the letter stated. Wyden and McCaskill said in the letter that Customs and Border Protection has "been aware of this security lapse since at least 2010."Read Replies (0)
By BeauHD from Slashdot's cutting-edge department
A survey of satellite data published in the journal Cryosphere confirms what scientists have suspected for a while now: ice loss from the critical region of Antarctica is happening at an increasingly fast pace. Quartz reports: In total, researchers found that Antarctica lost roughly 1,929 gigatons of ice in 2015, which amounts to an increase of roughly 36 gigatons per year every year since 2008. (A gigaton is one billion tons.) Nearly 90% of that increase in loss occurred in West Antarctica, "probably in response to ocean warming," according to NASA. The new data analysis mostly confirms other recent research, but does so with a higher degree of precision by using a new technique that can process a larger amount of satellite data than was possible before.
West Antarctica has been losing a lot of ice in recent years, and at an ever-growing pace, while East Antarctica is losing ice more steadily. The West Antarctic ice sheet is of particular concern because, like a building that stands on an uneven foundation, it is inherently unstable, making it especially vulnerable to the warming climate. If the entire ice sheet were destabilized and melted into the sea, researchers estimate it would lead to 3 meters (9 feet) of sea level rise globally. Models suggest that under a low-emissions scenario, where the world commits to "peaking" and then steadily reducing emissions in the near future, complete destabilization of the West Antarctic ice sheet is possible to avoid. But under medium- or high-emissions scenarios, the loss of the ice sheet becomes inevitable.Read Replies (0)
By BeauHD from Slashdot's welcome-to-2018 department
According to a new survey from Common Sense Media and SurveyMonkey, 47% of parents worry their child is addicted to their mobile device. By comparison, only 32% of parents say they're addicted themselves. USA Today reports: Half of parents also say they are at least somewhat concerned about how mobile devices will affect their kids' mental health. Nearly one in five say they're "extremely" or "very" concerned. According to the survey, 89% of parents believe it's up to them to curb their children's smartphone usage. The survey conducted between Jan. 25 and Jan. 29 included a sample of 4,201 adults, including 1,024 parents with children under age 18. Data was weighted to reflect the demographic composition of the U.S. for adults over 18, based on Census data. Many devices and services feature parental controls, but some parents may not be aware they exist. The Common Sense-SurveyMonkey survey found 22% of parents did not know YouTube -- which has faced scrutiny over how easy it is for kids to find inappropriate videos -- offered parental controls. Also, 37% have not used the controls before. Among parents surveyed who say their kids watch YouTube videos, 62% said their kids have seen inappropriate videos on the site. Most, or 81%, said it's the parents' job to prevent kids from seeing these videos.Read Replies (0)
By BeauHD from Slashdot's conflict-of-interest department
New submitter the gmr writes: According to an announcement on the OpenAI blog, Elon Musk has stepped down from the board of directors of the nonprofit AI safety group, which he co-founded in 2015, due potential conflict of interest with his company Tesla. As explained in a post on Futurism, the move away from OpenAI may indicate that Tesla may be moving forward with more AI projects than most people may realize. Musk's departure may mean that Tesla is closer to delivering vehicles capable of Level 5 autonomy, "fully self-driving" vehicles that more than 35,000 Tesla customers paid for even though the technology does not yet exist. "Elon Musk will depart the OpenAI Board but will continue to donate and advise the organization," the announcement reads. "As Tesla continues to become more focused on AI, this will eliminate a potential future conflict for Elon." The OpenAI board of directors now consists of Greg Brockman, Ilya Sutskever, Holden Karnofsky, and Sam Altman, with whom Musk co-founded the venture. The company reportedly plans to not only fill Musk's seat but expand their team as well.
"Open AI has also been a prominent voice in the conversation concerning the limitations, challenges, and potential dangers of artificial intelligence," reports Futurism. "Just this week, the company co-released a report with a number of other global AI experts that outlines the potential 'malicious' uses of the technology and how to prevent them."Read Replies (0)
By msmash from Slashdot's shape-of-things department
Pranav Dixit, writing for BuzzFeed News: Dara Khosrowshahi, Uber's CEO of six months, said on Thursday that the ride-hailing service would continue to invest aggressively in both Southeast Asia and India, where the company is losing money and faces strong competition from local players like Grab and Ola. Uber has been slow to expand its presence in India and Southeast Asia, allowing competitors to quickly gain ground. Singapore's Grab, for instance, claimed to have 95% of the country's ride-hailing market share last year. And Ola, Uber's Indian rival, currently operates in 110 cities against Uber's 29 cities. Ola does 1 billion rides annually, compared to Uber, which announced in mid-2017 that it completed 500 million total rides in the country in its first four years of operations. "We expect to lose money in Southeast Asia and expect to invest aggressively in terms of marketing, subsidies, etc.," Khosrowshahi told reporters in India, which is Uber's fastest-growing market outside the United States, and where he is currently on his first official tour. While Uber's India operation is not yet profitable, it does account for 10% of Uber's rides globally.Read Replies (0)