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A Nice Little Cryptography Primer

By itss | 28/06/2021
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Pun Intended.

Category: Technology
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  • Dell Rivals Apple's MacBook Neo With $699 Touchscreen XPS 13 Laptop
    by BeauHD on 01/06/2026 at 4:00 pm

    Dell has introduced a redesigned $699 XPS 13 aimed squarely at Apple's budget MacBook Neo, offering a premium aluminum design, touch display, backlit keyboard, Wi-Fi 7, 512GB of base storage, and various other configuration options. Dell's machine costs more than Apple's entry model but tries to justify the difference with lighter weight, better display specs, and upgrade paths Apple doesn't offer. "The XPS 13 begins at $699 -- students can purchase it for $599 -- while the MacBook Neo costs $599 and drops to $499 for education buyers," notes Bloomberg. From the report: Dell's product allows for more configuration, with up to 32GB of memory compared with the Neo's nonupgradeable 8GB of unified memory. Its display can also produce a wider spectrum of colors and supports refresh rates up to 120 hertz, while Apple reserves its best screens for the pricier MacBook Pro line. The inclusion of a backlit keyboard should allow for easier typing in dark conditions. Dell has also tossed in other nice-to-have upgrades over the Neo like more robust Wi-Fi 7 wireless networking. As for battery life, Dell is touting "up to 17 hours of streaming" versus a comparable 16 hours on the Neo. Still, the XPS comes with compromises of its own: Unlike the Neo, there's no built-in headphone jack, which means owners will need to rely on its quad-speaker audio system, use Bluetooth earbuds or plug a headphone adapter into one of the two USB-C ports. You can learn more via Dell.com. Read more of this story at Slashdot.

  • Botnet of More Than 17 Million Devices Dismantled
    by BeauHD on 01/06/2026 at 3:00 pm

    An anonymous reader quotes a report from Ars Technica: Authorities in the Netherlands said they dismantled a botnet that comprised more than 17 million devices and were managed by 200 servers in a joint operation by the police and the National Cyber Security Center. The action, announced Thursday, came about after a security researcher reported the sprawling network to authorities. The host infrastructure was located in the Netherlands. "The police then seized several botnet servers from a hosting provider for investigation," the NCSC said. "The botnet was taken offline by the provider because it was used for criminal purposes." According to a report Thursday by the NL Times, the botnet was linked to ASOCKS, a Russia-based company that provides residential proxy services. These services cater to people and organizations who want to obscure their locations or identities by proxying their Internet traffic through third-party devices. Proxy services are often used for illicit or unethical purposes such as performing DDoS attacks, running botnet command-and-control servers, operating phishing operations, and scraping website content. [...] It's unclear how the 17 million devices controlled by the botnet taken down by the Dutch police came to be that way. Read more of this story at Slashdot.

  • NVIDIA Unveils New ARM-Based AI/Graphics Superchip Coming to Windows PCs and Laptops
    by EditorDavid on 01/06/2026 at 11:34 am

    "The company best known for powering the AI boom is coming for the PC," reports Axios. Nvidia's CEO unveiled a new ARM-based "N1X processor made alongside Microsoft," reports CNBC, that "will be incorporated into a new RTX Spark superchip, debuting in the fall on a fresh line of Windows PCs from Microsoft, Dell, HP, ASUS, Lenovo and MSI." More details from Engadget: It was only a matter of time before NVIDIA released a powerful system-on-a-chip (SOC) to take on AMD's Ryzen AI Max and Qualcomm's latest Snapdragon X2 chips. At Computex today, NVIDIA unveiled the RTX Spark, a "superchip" meant to give both laptops and small desktops fast AI and graphics performance... The company says it offers 1 petaflop of AI computing power, and that it has 6,144 Blackwell RTX cores and 20 Mediatek Arm CPU cores. NVIDIA claims it's similar to the RTX 5070 laptop GPU but with much lower power draw. RTX Spark also has an NPU that's fast enough to be part of Microsoft's Copilot+ initiative, which requires a 40 TOPS NPU, but NVIDIA says it's mainly touting the tensor cores as part of the chip's Blackwell GPU for AI performance. RTX Spark's GPU can directly draw on the chip's large pool of unified memory, which can span from 16GB to 128GB, and the chip itself can use anywhere from single-digit wattage up to 80W... NVIDIA CEO Jensen Huang positions RTX Spark as a complete reinvention of the PC, eventually turning them more into devices meant for AI agents than manual human input... NVIDIA has been working together with Microsoft for "several years" while designing the RTX Spark, according to NVIDIA representatives... In a blog post provided to media, Microsoft head of Windows and devices, Pavan Davuluri, noted that the company optimized Windows 11's workload profile scheduling for the RTX Spark. "Whether you're checking your email or running an agent locally to debug code, the Windows scheduler on RTX Spark will ensure you get the best performance and efficiency out of your CPU," he wrote. Read more of this story at Slashdot.

  • New Lawsuit Against Amazon: 'Subscribe and Save' Program Can Actually Cost You More
    by EditorDavid on 01/06/2026 at 7:34 am

    Amazon's "Subscribe & Save" program — for recurring purchasees — has triggered a new lawsuit, reports Oregon Live. "The lawsuit contends that after luring in customers with 'artificially low prices,' the world's biggest online retailer jacked up the prices in the months after their first shipments arrived." In some cases, the lawsuit claims that customers were paying more for the exact same items through the Subscribe & Save program than they would be if they bought the items from other sellers on the site. That was true even when the up to 15% discount that the subscription program offers was calculated into the final purchase price, according to the suit. The Seattle law firm that filed the May 15 lawsuit says that Amazon's business practices amount to "deceptive," "misleading" and "bait and switch tactics." The firm is seeking class-action status in U.S. District Court for western Washington, a move that could potentially draw tens of millions of Amazon customers from across the U.S. into the litigation... [The suit says the plaintiffs' first order of espresso coffee grounds was $16.60.] When their order auto-renewed a few months later, the price had gone up to $17.04. A few months later, it rose to $21.25. Then in October 2024, the price increased to $28.69 — about $12 more than the Hermans had paid at the beginning of their subscription, according to the lawsuit. [The discount can be as little as 5% or up to 15%, Amazon told Oregon Live in a statement, noting customers do receive an email showing "applicable savings" before the orders ship. But...] The suit says Amazon gave the Hermans little notice to cancel the order or to shop around because it notified them of the latest price increase in an email at 8:54 p.m. — the same night it processed their order and charged them. The suit says if the Hermans had been given the time to shop around for a better price, they would have found that another Amazon seller was charging $25.90 — or $2.79 less — for the identical item. Amazon's "Subscribe & Save Terms & Conditions" page tells customers that it "may change the price for a Subscribe & Save subscription at any time for any reason...." The analytical group Consumer Intelligence Research Partners says about 25% of U.S. Amazon customers are enrolled in the Subscribe & Save program. Oregon Live got Amazon's response, which suggested their program saves customers time and money "through convenient, flexible, and recurring deliveries". (So when customers saw "Subscribe and Save", they were perhaps supposed to intuit the word save referred in part to... time-saving?) The plaintiffs' lawyer argues instead that "When you sign up for something that is called 'Subscribe & Save,' you'd expect that you're saving by subscribing. But that's not actually what's happening in many cases." Read more of this story at Slashdot.

  • New Desalination System Turns Seawater Into Drinking Water and Useful Salts - Including Lithium
    by EditorDavid on 01/06/2026 at 3:54 am

    "Scientists have developed a solar desalination system that turns seawater into drinking water without creating environmentally damaging brine," reports ScienceDaily. "Special laser-textured metal panels use sunlight to evaporate water while automatically moving salt deposits away from the working surface, preventing clogging. The process was successfully tested with water from three oceans and can recover nearly all salts as solids. Those leftover materials could even become a source of valuable lithium for batteries." (The research team was led by University of Rochest professor Chunlei Guo and published their results in the journal Light: Science & Applications.) The University of Rochester has made an announcement: The technology uses solar panels made of black metal etched with femtosecond lasers to make the surface super light-absorbing and superwicking — or extremely attractive to water. The panels have a laser-treated active region that pulls a thin layer of water across the surface, absorbs nearly all solar radiation, distills the water, and deposits the leftover salts and minerals into the panel's untreated sides or "passive" region so that the salt does not clog the active region and disrupt continuous desalination... Guo's team precisely etched the black metal's grooves so the various salts and minerals in ocean water would simply slough off... [I]t extracts nearly 100 percent of the salts in solid form. This could not only produce an abundant supply of table salt, but it could also be used to extract more precious minerals, including lithium, which is used in the lithium-ion batteries that power electric vehicles and other electronics. In a related paper in the Journal of Materials Chemistry A, Guo and his colleagues show how they can use the same superwicking solar panels to separate lithium from the rest of other salts in desalination. Embedding nanoparticles made of hydrogen titanate in the tiny grooves of the black metal surface isolates the lithium from other salts and minerals...Using water samples from Great Salt Lake, the researchers extracted about 50 percent of the lithium from the salts left behind by the desalination process. Guo says now that the superwicking desalination technology has been demonstrated in proofs of concept on small-scale devices, he sees the technology inherently scalable, capable of improving global access to drinking water and building more sustainable supply chains for precious minerals. "The National Science Foundation, the Bill & Melinda Gates Foundation, and Worldwide Universities Network supported this research." Read more of this story at Slashdot.

  • Something Made Earth's Molten Core Reverse Direction In 2010
    by EditorDavid on 01/06/2026 at 2:08 am

    ScienceAlert reports: In the molten ocean of iron churning in Earth's outer core, a section deep beneath the Pacific Ocean suddenly reversed direction and started moving eastward against the planet's usual westward flow. This happened in 2010, according to satellite measurements of Earth's magnetic field, and scientists are still trying to figure out what caused it... [I]t seemed to have a large, wave-like structure — as though a chunk of molten core material suddenly thought better of where it wanted to go, surging in the other direction... This finding suggests that there are processes that can influence it strongly enough to alter its behavior in bulk — and that our planet's interior may be more dynamic and variable than we thought. A new analysis captures what we know so far — and "It's from the roiling, molten, conducting metal at Earth's heart that the planetary magnetic field is generated... vital to our continued existence. It helps keep the atmosphere we breathe in and harmful cosmic radiation out." Read more of this story at Slashdot.

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