Scientists are worried that space aliens might send messages that worm their way into human society -- not to steal our passwords but to bring down our culture. "Astrophysicists Michael Hippke and John Learned argue in a recent paper that our telescopes might pick up hazardous messages sent our way -- a virus that shuts down our computers, for example, or something a bit like cosmic blackmail: 'Do this for us, or we'll make your sun go supernova and destroy Earth,'" reports NBC News. "Or perhaps the cosmic hackers could trick us into building self-replicating nanobots, and then arrange for them to be let loose to chew up our planet or its inhabitants." From the report: The astrophysicists also suggest that the extraterrestrials could show their displeasure (what did we do?) by launching a cyberattack. Maybe you've seen the 1996 film "Independence Day," in which odious aliens are vanquished by a computer virus uploaded into their machinery. That's about as realistic as sabotaging your neighbor's new laptop by feeding it programs written for the Commodore 64. In other words, aliens that could muster the transmitter power (not to mention the budget) to try wiping us out with code are going to have a real compatibility problem.

Yet there is a way that messages from space might be disruptive. Extraterrestrials could simply give us some advanced knowledge -- not as a trade, but as a gift. How could that possibly be a downer? Imagine: You're a physicist who has dedicated your career to understanding the fundamental structure of matter. You have a stack of reprints, a decent position, and a modicum of admiration from the three other specialists who have read your papers. Suddenly, aliens weigh in with knowledge that's a thousand years ahead of yours. So much for your job and your sense of purpose. If humanity is deprived of the opportunity to learn things on its own, much of its impetus for novelty might evaporate. In a society where invention and discovery are written out of the script, progress and improvement would suffer.

Samsung has taken the wraps off of its latest flagship, the Galaxy S9, at Mobile World Congress in Barcelona, Spain. The S9 features a familiar body with an upgraded camera, relocated fingerprint scanner, and newer processor. As usual, there are two versions: the Galaxy S9 and Galaxy S9+. Ars Technica reports: The S9 is one of the first phones announced with the new 2.8Ghz Snapdragon 845 SoC in the US, while the international version will most likely get an Exynos 9810. Qualcomm is promising a 25-percent faster CPU and 30-percent faster graphics compared to the Snapdragon 835. The rest of the base S9 specs look a lot like last year, with 4GB of RAM, 64GB of storage, a 3000mah battery, and a 5.8-inch 2960x1440 OLED display. The S9+ gets the usual bigger screen (6.2 inches @ 2960x1440) and bigger battery (3500mAh), but one improvement over last year is a RAM bump to 6GB. Neither RAM option is really outstanding for a phone this expensive, considering the much cheaper OnePlus 5T will give you 6GB and 8GB options for RAM at a much lower price. Both S9 models have headphone jacks, MicroSD slots, a new stereo speaker setup (one bottom firing, one doubles as the earpiece), IP68 dust and water resistance, wireless charging, and ship with Android 8.0 Oreo.

Both the Galaxy S9 versions are getting a main camera with two aperture settings. Just like a real camera, the Galaxy S9 has a set of (very tiny) aperture blades that can move to change the amount of incoming light. On the S9 they're limited to two different positions, resulting in f/1.5 and f/2.4 apertures. In low light the aperture can open up to f/1.5 to collect as much light as possible, while in normal or bright light it can switch to f/2.4 for a wider depth of field. Samsung is also answering Apple's Animojis with "AR Emoji." They work just like Apple's Animoji: using the front sensors to perform a primitive version of motion capture, the phone syncs up a character's facial expressions to your facial expressions. The Galaxy S9 clocks in at $719.99 and the S9+ is going for $839.99. In the U.S., preorders start March 2 at all four major carriers, and the phones ship out on March 16.

Fred Lambert reports via Electrek: As part of a state initiative, Tesla deployed over 300 Powerwalls in schools to cool down hot classrooms in Hawaii. Hawaii has a problem with hot temperatures in public classrooms that is affecting students negatively. The problem was so significant that the Hawaii State Department of Education had to intervene. They put together a $100 million fund, which has already helped cool down 1,190 classrooms to date, with contracts set for more than 1,300 classrooms, according to The Garden Island. In order to roll out the program without significantly increasing energy costs for public schools, they partnered with Tesla to pair Powerwalls with solar power to reduce the impact of running the air conditioners in classrooms across the state. It also resulted in an interesting learning opportunity about renewable energy and energy storage for students.

the gmr writes: According to a recent article published in the journal Nature, researchers at Northwestern University's McCormick School of Engineering have developed a "memtransistor," a device that both stores information in memory and processes information. The combined transistor and memory resistor work more like a neuron and purports to make computing more brain-like. The new "memtransistor" would use less energy than digital computers and eliminate the need to run memory and processing as separate functions while also being more brain-like. Lead researcher Mark C. Hersam clarified the brain-like efficacy of the memtransistor: "...in the brain, we don't usually have one neuron connected to only one other neuron. Instead, one neuron is connected to multiple other neurons to form a network. Our device structure allows multiple contacts, which is similar to the multiple synapses in neurons... [but] making dozens of devices, as we have done in our paper, is different than making a billion, which is done with conventional transistor technology today." Hersam reported no barriers to scaling up to billions of devices. This new technology would make smart devices more capable and possibly more seemingly-human. The devices may also promote advances in neural networks and brain-computer interfaces, new technologies also recently reported at Futurism.

According to Gartner, global sales of smartphones have declined year-on-year for the first time since the research company started tracking the global smartphone market in 2004. "Global sales of smartphones to end users totaled nearly 408 million units in the fourth quarter of 2017, a 5.6 percent decline over the fourth quarter of 2016," reports Gartner. The Register reports: In Gartner's Q4 sales stats, Samsung maintained a narrow lead in global volume shipments of smartphones -- but every major (top five) vendor outside of those based in China saw unit shipments slip. Several major factors caused the market shrinkage, said Anshul Gupta, research director at Gartner. "First, upgrades from feature phones to smartphones have slowed right down due to a lack of quality 'ultra-low-cost' smartphones and users preferring to buy quality feature phones. Second, replacement smartphone users are choosing quality models and keeping them longer, lengthening the replacement cycle of smartphones. Moreover, while demand for high quality, 4G connectivity and better camera features remained strong, high expectations and few incremental benefits during replacement weakened smartphone sales," Gupta added. This is a characteristic of the emerging markets, where all the action is -- not mature markets like the UK or USA. Samsung leap-frogged Apple by virtue of its sales declining slower than the market average -- Sammy's numbers were 3.6 per cent to 74.02 million units.

schwit1 shares a report from The Truth About Cars: [T]he simple task of washing a self-driving car is far more complicated than one might expect, as anything other than meticulous hand washing a big no-no. Automated car washes could potentially dislodge expensive sensors, scratch them up, or leave behind soap residue or water spots that would affect a camera's ability to see. According to CNN, automakers and tech firms have come up with a myriad of solutions to this problem -- though a man with a rag and some water appears to be the most popular. Toyota, Aptiv, Drive.AI, May Mobility, and Uber have all said they use rubbing alcohol, water, or glass cleaner to manually wash the sensors, before carefully finishing the job with a microfiber cloth. While it's more than just a little ironic that these automated vehicles require gobs of attention and pampering from human hands just to function correctly, some companies are working on a way around it. General Motors' Cruise has said it will design and implement sensor-cleaning equipment in production vehicles.

An anonymous reader quotes a report from CNN Money: The Trump administration is cracking down on companies that get visas for foreign workers and farm them out to employers. Some staffing agencies seek hard-to-get H-1B visas for high-skilled workers, only to contract them out to other companies. There's nothing inherently illegal about contracting out visa recipients, but the workers are supposed to maintain a relationship with their employers, among other requirements. In some cases, outsourcing firms flood the system with applicants. The U.S. Citizenship and Immigration Services agency said in a new policy memo released Thursday it will require more information about H-1B workers' employment to ensure the workers are doing what they were hired for. Companies will have to provide specific work assignments, including dates and locations, to verify the "employer-employee" relationship between the company applying for an H-1B and its visa recipient.

H-1B visas are valid for three years and can be renewed for another three years. The USCIS says it may limit the length of the visa to shorter than three years based the information an employer provides. For example, if an employer can't prove the H-1B holder is "more likely than not" needed for the full three years, the government might issue the visa for fewer than three years. The memo also says the administration wants to prevent employee "benching." That's when firms bring on H-1B visa holders but don't give them work and don't pay them the required wages while they wait for jobs.

When SpaceX's record-breaking Falcon Heavy rocket made its first test launch in early February , the craft didn't just hurl Elon Musk's shiny red roadster and spacesuit-clad mannequin to space. It had another, smaller payload, which at first glance seems much less impressive: a 1-inch-wide (2.5 centimeters) quartz disc with Isaac Asimov's "Foundation" trilogy encoded in laser-etched gratings . From a report: The famous science fiction series is only the beginning of the discs' planned contents. At a time when traditional hard drives are just breaking into the terabyte range, the quartz medium can hold up to 360 terabytes per disc. It also boasts a life span of 14 billion years. That's longer than the current age of the universe. This disc was symbolic; future devices will contain much more, and more useful, information. But the technology speaks to grander issues that humanity is now pondering: becoming a multiplanetary civilization, storing information for thousands or millions of years, and contacting and communicating with other intelligences (alien and Earthling).

So how should we record our knowledge and experiences for posterity? How should we ensure that this information is understandable to civilizations that may be quite different from our own? And, most importantly, what should we say? Humans have faced challenges like these before. Ancient civilizations built monuments like the pyramids and left artifacts and writing, sometimes deliberately. Later researchers have used this material to try to piece together ancient worldviews. However, in the modern era, we've set our sights much further: from centuries to millennia, from one planet to interstellar space, and from one species to many.

Zack Whittaker, writing for ZDNet Security researchers have found that hackers are using code-signing certificates more to make it easier to bypass security appliances and infect their victims. New research by Recorded Future's Insikt Group found that hackers and malicious actors are obtaining legitimate certificates from issuing authorities in order to sign malicious code. That's contrary to the view that in most cases certificates are stolen from companies and developers and repurposed by hackers to make malware look more legitimate. Code-signing certificates are designed to give your desktop or mobile app a level of assurance by making apps look authentic. Whenever you open a code-signed app, it tells you who the developer is and provides a high level of integrity to the app that it hasn't been tampered with in some way. Most modern operating systems, including Macs , only run code-signed apps by default.

From a blog post on MIT News Office: Veil would provide added protections to people using shared computers in offices, hotel business centers, or university computing centers, and it can be used in conjunction with existing private-browsing systems and with anonymity networks such as Tor, which was designed to protect the identity of web users living under repressive regimes. "Veil was motivated by all this research that was done previously in the security community that said, 'Private-browsing modes are leaky -- Here are 10 different ways that they leak,'" says Frank Wang, an MIT graduate student in electrical engineering and computer science and first author on the paper. "We asked, 'What is the fundamental problem?' And the fundamental problem is that [the browser] collects this information, and then the browser does its best effort to fix it. But at the end of the day, no matter what the browser's best effort is, it still collects it. We might as well not collect that information in the first place."

In some places, taps have been dry for over a year. People bathe their children with bottled water. A group of women has taken over water distribution from the city authorities. The future feared by millions of people across the world has already arrived in Mexico City , BuzzFeed News reports. From the report: In certain areas, people say taps go dry for months. Angry civilians have blocked off highways and squared off with riot police, wresting control of water distribution from the government. "Crime affects us deeply but if you don't have water, you can't do anything," said Marisol Fierro, part of a group of women in charge of delivering water to neighbors. Across the ocean, authorities in South Africa talk about Day Zero, when Cape Town is set to run out of water and the city is forced to shut off its taps. It has made headlines around the world, as people watch on with bated breath. But here in Iztapalapa, a sprawling, drab Mexico City borough where nearly 2 million people live, that day has already arrived, offering a window into what the future may hold for millions of people when the taps run dry. Police officers are sometimes forced to guard water trucks, popular targets for kidnappers who sell their contents for hefty prices. In other cities, politicians might promise expanded broadband, better health care, or higher wages to win votes, but in Mexico City, mayoral hopefuls have made simple access to water central to their campaigns. Reserved and quiet, Emma Pantaleon seems an unlikely protagonist at the front lines of this daily battle. Pantaleon joins Fierro and other women -- housewives who juggle child-rearing, house chores, and part-time jobs -- gathering water requests from their neighbors, coordinating trucks' routes with local authorities, and riding along to ensure the operation runs smoothly.

On a recent morning, she sat in the passenger seat of a water tanker as it revved its motor up a hill, dwarfing the dilapidated single-room houses along its path. When the driver swerved left and stepped on the brake, Pantaleon leaped out. It was a scene straight out of Mad Max: Fury Road. Pantaleon, 41, walked over to the nearest cinder block house and called out to its owner. As soon as Catalina Cortez opened the door, the driver and a helper marched in, pulling the truck's hose straight up to a plastic water storage tank taking up a third of the patio.

Dropbox employs a somewhat unusual technique to lower its costs, the cloud software company revealed on Friday in its filing to go public . From a report: In a process the company calls "infrastructure optimization," Dropbox said it deletes users' accounts if they don't sign in for a year and don't respond to emails. That keeps the company from incurring storage costs for inactive users, a tactic Yahoo has used in the past. Dropbox said that the costs of revenue dropped 6 percent in 2017 to $21.7 million, mostly due to a $35.1 million reduction "in our infrastructure costs." As it prepares to lure public market investors, Dropbox is paying particularly close attention to its expenses. The company operates in an intensively competitive market against vendors including Apple, Amazon, Box, Google and Microsoft. Once reliant on Amazon Web Services , Dropbox has moved away from public cloud in recent years and has been building its own data center infrastructure to store the majority of user data. Another way it's managed costs is by making sure that there weren't too many copies of users' files on third-party infrastructure.

An anonymous reader shares an Engadget report: The surging price of bitcoin (among others) in 2017 led more than a few companies to hop on the cryptocurrency bandwagon with hopes of striking it rich almost overnight. Many of their initial coin offerings seemed dodgy from the outset... and it turns out they were. Bitcoin.com has conducted a study of ICOs tracked by Tokendata, and a whopping 46 percent of the 902 crowdsale-based virtual currencies have already failed. Of these, 142 never got enough funding; another 276 have either slowly faded away or were out scams.

Apple will begin hosting Chinese users' iCloud accounts in a new Chinese data center at the end of this month to comply with new laws there. The move would give Chinese authorities far easier access to text messages, email and other data stored in the cloud. From a report: That's because of a change to how the company handles the cryptographic keys needed to unlock an iCloud account. Until now, such keys have always been stored in the United States, meaning that any government or law enforcement authority seeking access to a Chinese iCloud account needed to go through the U.S. legal system. Now, according to Apple , for the first time the company will store the keys for Chinese iCloud accounts in China itself. That means Chinese authorities will no longer have to use the U.S. courts to seek information on iCloud users and can instead use their own legal system to ask Apple to hand over iCloud data for Chinese users, legal experts said.

Ellen Nakashima, reporting for the Washington Post: Russian military spies hacked several hundred computers used by authorities at the 2018 Winter Olympic Games in South Korea [Editor's note: the link may be paywalled; alternative source], according to U.S. intelligence. They did so while trying to make it appear as though the intrusion was conducted by North Korea, what is known as a "false-flag" operation, said two U.S. officials who spoke on the condition of anonymity to discuss a sensitive matter. Officials in PyeongChang acknowledged that the Games were hit by a cyberattack during the Feb. 9 Opening Ceremonies but had refused to confirm whether Russia was responsible. That evening there were disruptions to the Internet, broadcast systems and the Olympics website. Many attendees were unable to print their tickets for the ceremony, resulting in empty seats.