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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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  • Battery Fires At Recycling Centres Are Costing the UK £1bn a Year
    by EditorDavid on 23/08/2026 at 12:29 am

    Wrongly discarded lithium batteries, such as those in vapes, are causing more than 10 fires a week at U.K. recycling centers, according to figures shared with the Guardian: The Environment Services Association (ESA), the trade body for waste management companies, said its members had reported 1,518 fires in the year to March 2026. At least 541 of these fires were directly attributed to lithium ion batteries, the survey found. There were a further 216 battery fires in bin lorries [garbage trucks]. The ESA said the reported number of battery-related fires underestimated the scale of the problem, because in most incidents it was impossible to determine the cause of the blaze. A spokesperson said: "We know 40% of fires at recycling centres are caused by batteries, but we think the actual number is more like 70%." It estimates that annual cost of these fires has increased from £150m in 2021 to £1bn today... The ESA is calling for a £5 deposit scheme on the sale of all vapes to ensure that vape users have an incentive to return used devices to retailers for safe disposal... [Patrick Brighty, the head of recycling policy at the ESA, said] "Vapes are among the biggest culprits because they're cheap, abundant and typically have a short use-life." Thanks to long-time Slashdot reader AmiMoJo for sharing the news. Read more of this story at Slashdot.

  • How Will AI Change the Field of Mathematics?
    by EditorDavid on 22/08/2026 at 10:39 pm

    "AI went from being very terrible to seemingly genuinely quite good at a professional level in a very short space of time..." says the Verge's AI reporter. But AI systems "are still truly, truly terrible at some areas of math... even the days of the week." If you look at academic math papers, a lot of the time you won't see numbers... So they're still terrible, but they're now also very good at this other part. As to why, at some point you reach a critical mass of what these systems can do. We saw it with writing, we've seen it with programming. They're very good at forging connections between different areas, applying old methods in new ways, those kinds of things. It appears that the newer models they're training have apparently reached that level where it clicks, and now it can do math... There are areas now where it seems to be producing work that is on par with good mathematicians, alongside other parts where yeah, it can't count. All caught up in that is whether it's going to rewrite employment structures or funding structures... One would hope [math researchers] would branch out into all of these new exciting areas or pose new questions. But AI won't do that, and that's the concern. And then that would leave the field quite sterile, and it will have all of these things that have been done, and maybe nothing left to pursue... [A] lot are scared that it's closing off the field. So by definition, those breakthroughs that lead to something surprising and new that you can say, "Oh, this works here," may not be happening anymore... There were some bleak responses from graduate students I saw in essays posted online. Where's their place in this as future researchers? Do they have a place in this? Is it as glorified AI proof checkers? That will be quite an unsatisfying career, I imagine. Or maybe not, I don't know. We will see. I think anything used properly will be a net boon. They also had an interesting response when asked if AI democratizes access to high-level mathematical proofs: A lot of the mathematicians I spoke to were almost quite weary of this, actually. They love the idea, in theory, of democratizing access. They're also quite fed up with AI-generated or -assisted papers that are flooding every publication imaginable, as well as the pre-print servers that they use in these fields. Some of those I spoke to said things like, "Oh, I got three emails this week alone with people being like, 'Hey, is this legit?'" Because they thought they'd solved something with ChatGPT or with Claude, and they also don't have the mathematical skills to check whether they've actually solved something. On the flip side, there are parts where they said, "Well, we've got a talented undergrad who's done something that a talented undergrad would probably have never managed, and here they are doing grad-level work and they've produced a paper that is legit." And in the bigger scheme of things, a few I spoke to said, "Well yeah, a lot of these are in the ivory tower. Having access to this kind of thing globally could really boost access to the kind of things here." On the flip side, the cost. These things cost a lot to run. Read more of this story at Slashdot.

  • Rush Rescue Mission for NASA's $500M Space Telescope Fails
    by EditorDavid on 22/08/2026 at 9:00 pm

    Remember that rush rescue mission for NASA's $500M space telescope? It failed, reports CNN, and the LINK satellite won't be able to boost the telescope's orbit. NASA says its decades-old Swift telescope will now continue losing altitude, until it reaches Earth's atmosphere later this year and burns up. CNN reports: Just weeks after LINK lifted off on July 3, it started to spin out of control. [Satellite designer] Katalyst was able to regain control of the satellite, but the company acknowledged that the issue cost it time, which would delay LINK's rendezvous with Swift by about a month. However, that postponement — at least initially — did not seem to be a deterrent to the mission. Now, NASA and Katalyst have announced that LINK's mission will not capture and boost Swift to a higher orbit "due to ongoing attitude control issues," according to statements Wednesday. "NASA should be willing to move quickly and take smart risks when the potential return is worth it, and that is exactly what we did with this mission," NASA Administrator Jared Isaacman said in a statement. "This is not the outcome we were working toward, but it does not change why this mission was worth attempting. The team moved with extraordinary speed to give Swift a chance to carry out more science while advancing capabilities America will need for satellite servicing in the future...." The mission team is forging ahead with its plan for LINK to rendezvous with Swift — but as a demonstration rather than a rescue. "We are going to learn everything we can from LINK's rendezvous attempt and put those lessons to work on the missions that follow," Isaacman said... Swift wasn't designed to be serviced in space, which means that insights from the demonstration could be used for future missions... "We have already learned a tremendous amount," [said Ghonhee Lee, CEO of Katalyst Space Technologies], "and now our job is to turn those lessons into something durable — building a repeatable playbook to inform future rendezvous and proximity operations and satellite servicing." Read more of this story at Slashdot.

  • Flock is Secretly Building a Powerful New Prompt-Based AI Tool for Police
    by EditorDavid on 22/08/2026 at 8:00 pm

    Slashdot reader fjo3 shared this article from Wired: [Flock] has told the public for years that its technology "cannot recognize, identify, or track individuals." It has now built a system that does both, an artificial intelligence tool for police that can identify drivers and track vehicles by their patterns of movement alone, WIRED has learned... Because the system also reaches police case files, 911 dispatch logs, and commercial identity records, those plates can be turned into names, home addresses, and relatives. It can search for people in an area drawn on a map based on nothing more than a physical description... The code describes 45 tools at the AI's disposal, giving it access to plate scans and camera metadata, arrest records, case files, dispatch logs, ballistics results, and commercial databases that contain Social Security numbers, dates of birth, phone numbers, email addresses, relatives and associates. Flock says it is testing the product with a small group of law enforcement partners and describes it as still in development, with capabilities that may not reflect what it eventually sells. It arrives as the company faces bipartisan political pressure, a growing record of officers caught misusing its platform, and a wave of vandalism that has left cameras sawed off and lenses painted over in cities across the country... An officer no longer needs a plate, a name, or a crime to begin: They supply a place, a stretch of time, and a pattern of behavior, and the system is designed to hand back the people who fit... One prompt Flock preloaded into the system reads: "Find me witnesses based on vehicles most seen in [neighborhood] during [last 14 days] during [daily timeframe] *(will not include whitelisted vehicles)." An officer would fill in the blanks and submit it. The output is a list of plates, which other tools in the product then convert into names and home addresses. Another prompt instructs the system to list everyone arrested more than twice in two years for "any offense," exempting only narcotics arrests, and then says to map where those people live, retrieve the calls for service at their homes, and "do a workup on the top three individuals." The prompt begins with everyone in the area who has an arrest record and ends with dossiers on three of them, chosen by the software. A "workup," in Flock's terminology, is a one-command background check. It starts with a name and a date of birth and returns what the department's records and commercial data hold: vehicles, prior listings as a suspect, and, on a second screen, relatives, phone numbers, and online accounts. Wired shares this reaction from a law professor at George Washington University. "It is clear Flock has aspirations far beyond ALPRs to become a digital platform for policing," Read more of this story at Slashdot.

  • Low Emission Zone Led To Better Lung Size, Function Among London Children
    by EditorDavid on 22/08/2026 at 7:00 pm

    Long-time Slashdot reader AmiMoJo shared this report from the Guardian: Children's lungs grew bigger and stronger after the most polluting vehicles were restricted from entering London, a study has found. Examinations of London schoolchildren before and after the introduction of the city's ultra-low emission zone found a restoration of lung capacity that had been stunted by exposure to pollution... "Traffic pollution in cities damages children's health and development," said Chris Griffiths, a professor of primary care at the University of Oxford and Queen Mary University of London, and the study's joint senior author. "We provide the strongest evidence yet on how these harms can be prevented. Ambitious clean-air zones should be considered a priority for cities globally with traffic-related air pollution." Air pollution from traffic has stunted the development of children's lungs in London for decades. Previous research found that by the age of eight or nine, children from the most polluted areas had 5-10% less lung capacity than their peers elsewhere. That impairment, which scientists said was the result of exposure to nitrogen dioxide, put them at increased risk as adults of developing respiratory diseases, such as asthma and chronic obstructive pulmonary disease, cardiovascular and metabolic disease, and premature death. Read more of this story at Slashdot.

  • Moderna-Merck Vaccine Cuts Recurrence And Spread of Melanoma, Raises New Treatment Hope
    by EditorDavid on 22/08/2026 at 6:00 pm

    Reuters reports "a major success in a new field of cancer treatment this week, as Moderna and Merck announced a personalized mRNA cancer vaccine "reduced the risk of recurrence and spread of melanoma in a late-stage trial". The vaccine was tested with Merck's widely used immunotherapy drug Keytruda: Thousands of patients who have undergone surgery to remove high-risk melanoma tumors could benefit as soon as next year if regulators approve the vaccine, Moderna President Stephen Hoge said in an interview. This is the first positive late-stage trial result for an mRNA cancer vaccine, which trains a patient's immune system to fight tumors by targeting specific mutations in those cells, and the first such study to show that adding a treatment to Keytruda worked better than that therapy alone... Interim results of the ongoing study, released on Wednesday, found the treatment, Intismeran, met both its primary target of reducing cancer recurrence and its secondary goal of preventing tumors from spreading to other parts of the body, compared with Keytruda alone. When the vaccine is injected into a patient, the patient's cells produce copies of mutations for the immune system to recognize and destroy... Merck said the companies are already in talks with regulators about the treatment. "Merck, Moderna and other companies are testing similar approaches against lung, breast and pancreatic cancers," the article points out. It adds that Karen Knudsen, CEO of the Parker Institute for Cancer Immunotherapy, "said the Moderna results could signal a new era for treating solid-tumor cancers." More from CNN: The trial result is "a monumental leap forward," validating mRNA technology as a cancer treatment, said Dr. Julie Gralow, chief medical officer of the American Society of Clinical Oncology... Roche and BioNTech, whose mRNA technology was used in the Pfizer COVID vaccines, are testing a similar treatment called autogene cevumeran in mid-stage studies in colon and pancreatic cancer patients who have undergone surgery. Results of the colon cancer trial are expected in 2027, with pancreatic trial results to follow in 2031. "We should be hearing results from multiple studies over the next few years and there's every reason to hope now, with this news, that many of them will be positive," said Dr. Robert Vonderheide, director of Penn Medicine's Abramson Cancer Center and president-elect of the American Association for Cancer Research. Read more of this story at Slashdot.

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