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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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  • Wildfires, Evacuations, and Smoke Hit Europe and North America
    by EditorDavid on 26/07/2026 at 6:39 pm

    270,000 people have been displaced by wildfires in France and Spain, reports the Guardian. A wildfire even forced evacuations in Scotland. And wildfires "have now scorched four million acres of land in the U.S.," reports NPR, as tens of millions of people in North America "are continuing to endure hazardous smoke from out of control wildfires burning across Canada and the Western U.S." At America's National Interagency Fire Center, NPR's wildfire correspondent says all of America's firefighting resources have now been deployed across the country. "So if we get another big fire, we're in trouble... International aid could be harder to come by if the situation in Southern Europe gets worse and firefighters are going to be needed there." Meanwhile Toronto was blanketed this week "with eye-watering, cough-inducing soot," writes a climate-change reporter for the Toronto Star newspaper, "briefly giving us the worst air quality in the world." But looking to the future after a wildfire that's 50% larger than any in Ontario's history (315,000 hectares or 778,331 acres), he had this to say about the eye-watering smoke. "It will be back." The article's headline warned of "Our smoke-filled future" and how Canada "must prepare for bigger wildfires, every summer — forever." Even if global carbon emissions were cut dramatically, so long as any greenhouse gases are being put into the atmosphere, climate scientists say the world will continue to get hotter. And as the temperature rises, the forests dry out and the wildfires will get bigger, stronger and more frequent. "It's not going to get better. It's going to get worse," said Edward Struzik, a fellow with the Institute for Energy and Environmental Policy at Queen's University and the author of Dark Days at Noon: the Future of Fire . "These fires aren't going away. Toronto is going to get smoke every summer...." The best solution would have been to dramatically cut emissions years ago. The harsh scientific reality is there's nothing we can do to stop wildfire smoke from blanketing cities for a few days every summer — and it's going to continue for decades to come. We're all going to need to buy air purifiers and masks and get used to it.... "The idea that we can thin our way through the boreal forest boggles the mind," [says Zeke Hausfather, a climate scientist at Berkeley Earth, an independent non-profit research organization]. "There aren't enough people in Canada to do that." The boreal forest in Canada is an enormous and largely roadless expanse bigger than the entire European Union. In comparison, America's much smaller forests are criss-crossed by roads, making firefighter access much quicker and easier. And the nature of the forests is fundamentally different as well, said Hausfather, who wrote an article summarizing research on the subject. "Western U.S. forests have evolved for frequent low-level fires that burn out the undergrowth — usually every five to 30 years," he said. "Historically, before fire suppression, fires would burn through, and they wouldn't actually kill the trees. They'd just kill smaller trees and clear out the brush." "The boreal forest is a fundamentally different beast," he said. "It's an ecosystem designed to burn." With smaller, more densely packed trees, the boreal is wetter and colder and doesn't burn anywhere near as often — every 100 to 200 years on average, Hausfather said. But when fire does erupt, it's often much more intense, burning up into the canopy and levelling everything in its path... Clearing out the dead wood on the ground wouldn't prevent, or even slow, the canopy fires that sweep the boreal, said Hausfather. Read more of this story at Slashdot.

  • AI-Equipped Garbage Trucks Could Soon Start Spying On People in the US
    by EditorDavid on 26/07/2026 at 5:39 pm

    America's garbage trucks can do more than just collect trash, reports Newsweek. They may also help identify code violations using AI. Officials in Cape Coral, Florida, recently considered equipping sanitation trucks with AI-powered cameras that would photograph properties as crews complete their normal collection routes. The system would have been designed to identify potential issues such as overgrown lawns, peeling paint, and illegal dumping, and to flag violations so the city staff can review them later before taking enforcement action... However, in a statement on July 13, Cape Coral officials said it would not be moving forward with the camera technology, citing cost issues and insufficient benefits. "Claims suggesting that this technology would automatically identify, cite or fine residents are inaccurate," the statement also noted... Cape Coral officials say that a camera system in the future would assist — not replace — human code enforcement officers, and employees will review any AI-generated alerts before violations are issued. "Even if such a system were to be considered in the future, any potential code violations would require review and verification by a Code Compliance Officer before any enforcement action could be taken," the organization wrote. But Cape Coral, Florida "is not the first city to explore the technology," the article notes. AI imaging systems developed by City Detect have already been deployed in several municipalities. According to the company's published case studies, Stockton, California, used the platform to analyze nearly 40,000 parcels, capturing almost 200,000 images while identifying thousands of potential code issues. Cathedral City, California, has also used the technology to assist code enforcement, while Dallas approved funding for a similar program pending final implementation. Thanks to Slashdot reader fjo3 for sharing the article. Read more of this story at Slashdot.

  • Is Huawei Building Its Own DRAM Fab?
    by EditorDavid on 26/07/2026 at 4:39 pm

    From the site tech-news site XDA Developers: The consumer tech economy needs more DRAM manufacturers, and it needs them more urgently than perhaps at any point in its history. Anyone keeping track of the pricing trends will know that memory prices have climbed into the stratosphere on the back of AI infrastructure's relentless demand, and every consumer device that depends on RAM has traveled from inflated to unaffordable, quarter after quarter, with almost no relief in sight. Which is exactly why a story out of Shenzhen is worth paying attention to, even in its current rumor phase. According to the details circulated by various semiconductor analysts on X, the Chinese government, DRAM maker SwaySure and Chinese tech giant Huawei have partnered to set up a 12-inch memory production plant. If the reports hold up, it could change memory economics for years to come, but not necessarily in the way you'd hope... SwaySure itself is a known player. The company was registered in Shenzhen in March 2022, is reportedly backed by municipal government, and appears alongside Huawei on the US Commerce Department's Entity List, suggesting Washington has realized the connection between the two entities. Although, that's also where the story becomes a little less straightforward. None of these claims have been independently confirmed, and many of the technical details circulating online trace back to a single X account. Huawei has previously denied operating the wider network of state-backed fabs that analysts have reported. Even the widely quoted figure of 140,000 wafers per month isn't new, and public records indicate SwaySure's production line is already operational. What gives the report weight, then, is the fact that Huawei has spent years building this kind of domestic semiconductor ecosystem through partners that appear to operate independently. The rationale that analysts on X keep revisiting has little to do with consumer memory. Huawei's Ascend AI accelerators require high-bandwidth memory (HBM), and US export controls have all but cut Chinese entities from procuring HBM from Samsung or SK Hynix... Owning the supply outright solves a problem that purchasing power can't, which is why the DRAM push is read as a bid to secure captive HBM for Huawei's own silicon rather than to flood the market with cheaply manufactured DDR5... The catch, however, is the fact that most of this new and rejuvenated capacity is expected to be absorbed by China's own domestic demand, rather than to relieve the global shortage... This development does not seem to be an isolated incident, given the state of DRAM economics. CXMT, China's largest manufacturer of DRAM, is already running close to 265,000 wafer starts per month as of now as per analyst estimates, and is projected to hit 350,000 by the end of the year, bringing it within the touching distance of Micron's estimated 385,000.... [T]he oligopoly seems to be facing the first credible challenge to its capacity discipline in decades, and it seems to be coming from a country building fabs much faster than the competition could hope to match. Now, whether it tangibly impacts the consumer market economics in the time to come may be a story in its own right in a few years, but for now, for what it's worth, it's a new direction, and much of it feeds optimism. Read more of this story at Slashdot.

  • Three Astronauts Safely Return from Space Station, Landing in Kazakhstan Steppe
    by EditorDavid on 26/07/2026 at 3:39 pm

    "Welcome home!" NASA posted on X.com, sharing footage of a successful "parachute-assisted" landing on a Kazakhstan steppe for the Soyuz MS-28, carrying three astronauts who'd spent 241 days on the International Space Station. (And YouTube has a full two-hour video with NASA's coverage of the landing.) A NASA web page notes they orbited Earth 3,856 times and traveling more than 102 million miles after docking with the Space Station on November 27. It was the first mission for NASA astronaut Chris Williams and Roscosmos cosmonaut Sergei Mikaev (and the second mission for Roscosmos cosmonaut Sergey Kud-Sverchkov). "After routine post-landing medical checks, recovery teams will fly the crew by helicopter to Karaganda, Kazakhstan. Williams then will board a NASA aircraft bound for the agency's Johnson Space Center in Houston." Read more of this story at Slashdot.

  • Typo-Squatting Scammers Con South Carolina Town Out of $545K
    by EditorDavid on 26/07/2026 at 2:34 pm

    It started with some underground utility work for the South Carolina town of Surfside Beach (population: 4,155). "Public records confirm that a payment of $545,598.30 was issued," according to a local news station — but the CEO of Wildcat Contractors "stated that the account that received the money is a scammer account and that his company has an overdue invoice for underground utility work completed in Surfside Beach." Yahoo picks up the story: After the payment issue surfaced, Wildcat said Surfside Beach sent over the email thread containing the payment confirmation. The company told WMBF it noticed multiple red flags in the chain. One involved an email address where "Wildcat" appeared with an extra "i." Another involved documents that the company said included a forged signature taken from a prior notarized document. Wildcat said the money was sent to a spoofing account claiming to be the contractor. More local reports are unraveling what happened: According to the Wall Street Journal, the town's finance director said a town employee called Wildcat's project manager on March 13, the day the payment was sent. The project manager referred the caller to [Wildcat CEO] Bowker. The town then called Bowker's mobile phone and left a voicemail about the ACH transfer. Bowker told the Wall Street Journal she does not recall the voicemail but acknowledged she may have missed it. Now a new report released by a law firm hired by the town to investigate "shows it did make an attempt to verify before sending $545,000 to a fraudulent bank account," according to local news reports: According to the report, the town sent an email to Wildcat's legitimate email domain on March 13 requesting a callback for verbal verification before sending the payment. Surfside received a response to that email with a phone number, though it remains unclear whether that response came from a real Wildcat employee or from the scammers. The report found that the fake town domain was used in communications between both parties throughout the process, which the law firm overseeing the investigation said was likely created to facilitate the fraud and delay its discovery. That seems to be the case in a nutshell: Investigators determined the fraudsters used spoofed and typo-squatted email domains, including surfsidesbeach.org, to impersonate town officials and redirect the payment. The fraudulent domain was created March 9 and was used to help conceal the scheme, according to investigators. Town officials said they are continuing to work with the FBI, South Carolina Law Enforcement Division, and their insurance partners to recover the funds. "The town has also implemented additional security measures to strengthen payment verification procedures and reduce the risk of similar incidents." Read more of this story at Slashdot.

  • A Promising Process For Nuclear Fuel Re-use and Disposal?
    by EditorDavid on 26/07/2026 at 11:34 am

    A Canadian lab has run a chemical process on real spent nuclear fuel "and pulled out 90% of the long-lived danger in 24 hours, the part that forces a burial site to last 100,000 years," notes the blog Autonocio, "with the leftovers meant to fuel a reactor." The standard plan for spent nuclear fuel is to wait it out. You pull the used bundles from a reactor, sit them in a pool of water for seven to ten years while the heat and radiation come down, seal them in concrete casks, and look for somewhere deep and geologically dull to leave them for the next hundred thousand years. Canada has been hunting for that burial site since the 1980s and still doesn't have one in the ground. A company in Saint John, New Brunswick thinks most of what makes that waste dangerous never needed to go in the ground at all. Moltex Energy Canada says a chemical process it calls WATSS can strip 90% of the long-lived material out of used Canada Deuterium Uranium [CANDU] fuel in 24 hours, and that the concentrated leftovers become fuel for a reactor it wants to build on the same site. The recovery step isn't a slide in a pitch deck anymore. In 2025, World Nuclear News reported that Canadian Nuclear Laboratories ran the process on real used fuel from a commercial Canadian reactor and confirmed the 90% figure. None of it is generating power yet. What exists is a validated chemical step and a reactor design waiting in line at a regulator. The rest is a 2030s problem. "The chemistry has a lab result behind it. The reactor does not exist..." the article points out. "Moltex is aiming to have its first WATSS and SSR-W units running at Point Lepreau by the early-to-mid 2030s... Not everyone buys the pitch. Critics have argued the reprocessing creates its own stream of byproducts, that the economics are unproven, and that a single site's stockpile is finite." But Moltex "isn't alone in trying to burn nuclear waste instead of bury it," the article notes, with Switzerland and Denmark "chasing the same goal a different way." Switzerland's Transmutex drives a subcritical reactor with a particle accelerator, feeding it spent fuel alongside thorium... Denmark's Copenhagen Atomics is building a thorium molten-salt reactor that fits inside a shipping container and runs on the leftovers from conventional plants. Thanks to long-time Slashdot reader kwelch007 for sharing the article. Read more of this story at Slashdot.

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