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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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  • EPA Approves New 'Forever Chemical' Pesticides For Use On Food
    by BeauHD on 25/11/2025 at 10:00 am

    The EPA has approved new pesticides that qualify as PFAS "forever chemicals" (paywalled; alternative source), sparking criticism from scientists and environmental groups who warn these decisions could increase Americans' exposure through food and water at a time when many states are moving to restrict such substances. The Washington Post reports: This month, the agency approved two new pesticides that meet the internationally recognized definition for per- and polyfluoroalkyl substances, also known as PFAS or fluorinated substances, and has announced plans for four additional approvals. The authorized pesticides, cyclobutrifluram and isocycloseram, which was approved Thursday, will be used on vegetables such as romaine lettuce, broccoli and potatoes. The agency also announced plans to relax a rule requiring companies to report all products containing PFAS and has proposed weakening drinking water standards for the chemicals. "Many fluorinated compounds registered or proposed for U.S. pesticidal use in recent years offer unique benefits for farmers, users, and the public," EPA spokeswoman Brigit Hirsch said in a statement. "It is important to differentiate between the highly toxic PFAS such as PFOA and PFOS for which the EPA has set drinking water standards, versus less toxic PFAS in pesticides that help maintain food security," notes Doug Van Hoewyk, a toxicologist at Maine's Department of Agriculture, Conservation and Forestry. He added that concerns about food residue depend on the PFAS and the quantity. Nathan Donley, a senior scientist at the Center for Biological Diversity, also commented: "The data we have about the use of PFAS pesticides is already seven years old, and since there have been many new approvals during that time, those numbers are sure to underestimate the amount were using today." Read more of this story at Slashdot.

  • Ozone Hole Ranked As 5th Smallest In More Than 30 Years
    by BeauHD on 25/11/2025 at 7:00 am

    Scientists report that the Antarctic ozone hole in 2025 is the fifth-smallest since 1992, thanks largely to decades of global restrictions on ozone-depleting chemicals under the Montreal Protocol. ABC News reports: The ozone hole reached its greatest one-day extent for 2025 in early September, measuring 8.83 million square miles, about 30% smaller than the largest hole on record in 2006. NOAA and NASA scientists emphasize that recent findings show efforts to limit ozone-depleting chemical compounds can have a significant impact. The regulations are established by the Montreal Protocol, which went into effect in 1992. Subsequent amendments are driving the gradual recovery of the ozone layer, which remains on track to fully recover later this century as countries worldwide replace harmful substances with safer alternatives. For decades, chlorofluorocarbons (CFCs) and other ozone-depleting compounds were widely used in aerosol sprays, foams, air conditioners and refrigerators, causing significant reductions in ozone levels. Natural factors, such as temperature and atmospheric circulation, also influence ozone concentrations and are likely to have contributed to a smaller ozone hole this year, according to researchers. "This year's hole would have been more than one million square miles larger if there was still as much chlorine in the stratosphere as there was 25 years ago," said Paul Newman, a senior scientist at the University of Maryland system and longtime leader of NASA's ozone research team. Read more of this story at Slashdot.

  • Hacker Conference Installed a Literal Antivirus Monitoring System
    by BeauHD on 25/11/2025 at 3:30 am

    An anonymous reader quotes a report from Wired: Hacker conferences -- like all conventions -- are notorious for giving attendees a parting gift of mystery illness. To combat "con crud," New Zealand's premier hacker conference, Kawaiicon, quietly launched a real-time, room-by-room carbon dioxide monitoring system for attendees. To get the system up and running, event organizers installed DIY CO2 monitors throughout the Michael Fowler Centre venue before conference doors opened on November 6. Attendees were able to check a public online dashboard for clean air readings for session rooms, kids' areas, the front desk, and more, all before even showing up. "It's ALMOST like we are all nerds in a risk-based industry," the organizers wrote on the convention's website. "What they did is fantastic," Jeff Moss, founder of the Defcon and Black Hat security conferences, told WIRED. "CO2 is being used as an approximation for so many things, but there are no easy, inexpensive network monitoring solutions available. Kawaiicon building something to do this is the true spirit of hacking." [...] Kawaiicon's work began one month before the conference. In early October, organizers deployed a small fleet of 13 RGB Matrix Portal Room CO2 Monitors, an ambient carbon dioxide monitor DIY project adapted from US electronics and kit company Adafruit Industries. The monitors were connected to an Internet-accessible dashboard with live readings, daily highs and lows, and data history that showed attendees in-room CO2 trends. Kawaiicon tested its CO2 monitors in collaboration with researchers from the University of Otago's public health department. The Michael Fowler Centre is a spectacular blend of Scandinavian brutalism and interior woodwork designed to enhance sound and air, including two grand pou -- carved Mori totems -- next to the main entrance that rise through to the upper foyers. Its cathedral-like acoustics posed a challenge to Kawaiicon's air-hacking crew, which they solved by placing the RGB monitors in stereo. There were two on each level of the Main Auditorium (four total), two in the Renouf session space on level 1, plus monitors in the daycare and Kuracon (kids' hacker conference) areas. To top it off, monitors were placed in the Quiet Room, at the Registration Desk, and in the Green Room. Kawaiicon's attendees could quickly check the conditions before they arrived and decide how to protect themselves accordingly. At the event, WIRED observed attendees checking CO2 levels on their phones, masking and unmasking in different conference areas, and watching a display of all room readings on a dashboard at the registration desk. In each conference session room, small wall-mounted monitors displayed stoplight colors showing immediate conditions: green for safe, orange for risky, and red to show the room had high CO2 levels, the top level for risk. Colorful custom-made Kawaiicon posters by New Zealand artist Pepper Raccoon placed throughout the Michael Fowler Centre displayed a QR code, making the CO2 dashboard a tap away, no matter where they were at the conference. Resources, parts lists, and assembly guides can be found here. Read more of this story at Slashdot.

  • Mind-Altering 'Brain Weapons' No Longer Only Science Fiction, Say Researchers
    by BeauHD on 25/11/2025 at 2:02 am

    Researchers warn that rapid advances in neuroscience, pharmacology, and AI are bringing "brain weapons" out of science fiction and into real-world plausibility. They argue current arms treaties don't adequately cover these emerging tools and call for a new, proactive framework to prevent the weaponization of the human mind. The Guardian reports: Michael Crowley and Malcolm Dando, of Bradford University, are about to publish a book that they believe should be a wake-up call to the world. [...] The book, published by the Royal Society of Chemistry, explores how advances in neuroscience, pharmacology and artificial intelligence are coming together to create a new threat. "We are entering an era where the brain itself could become a battlefield," said Crowley. "The tools to manipulate the central nervous system -- to sedate, confuse or even coerce -- are becoming more precise, more accessible and more attractive to states." The book traces the fascinating, if appalling, history of state-sponsored research into central nervous system (CNS)-acting chemicals. [...] The academics argue that the ability exists to create much more "sophisticated and targeted" weapons that would once have been unimaginable. Dando said: "The same knowledge that helps us treat neurological disorders could be used to disrupt cognition, induce compliance, or even in the future turn people into unwitting agents." The threat is "real and growing" but there are gaps in international arms control treaties preventing it from being tackled effectively, they say. [...] The book makes the case for a new "holistic arms control" framework, rather than relying on existing arms control treaties. It sets out a number of practical steps that could be taken, including establishing a working group on CNS-acting and broader incapacitating agents. Other proposals concern training, monitoring and definitions. "We need to move from reactive to proactive governance," said Dando. Both men acknowledge that we are learning more about the brain and the central nervous system, which is good for humanity. They said they were not trying to stifle scientific progress and it was about preventing malign intent. Crowley said: "This is a wake-up call. We must act now to protect the integrity of science and the sanctity of the human mind." Read more of this story at Slashdot.

  • Trump Launches Genesis Mission, a Manhattan Project-Level AI Push
    by BeauHD on 25/11/2025 at 1:25 am

    BrianFagioli writes: President Trump has issued a sweeping executive order that creates the Genesis Mission, a national AI program he compares to a Manhattan Project level effort. It centralizes DOE supercomputers, national lab resources, massive scientific datasets, and new AI foundation models into a single platform meant to fast track research in areas like fusion, biotech, microelectronics, and advanced manufacturing. The order positions AI as both a scientific accelerator and a national security requirement, with heavy emphasis on data access, secure cloud environments, classification controls, and export restrictions. The mission also sets strict timelines for identifying key national science challenges, integrating interagency datasets, enabling AI run experimentation, and creating public private research partnerships. Whether this becomes an effective scientific engine or another oversized federal program remains to be seen, but the administration is clearly pushing to frame Trump as the president who put AI at the center of U.S. research strategy. Read more of this story at Slashdot.

  • Jony Ive and Sam Altman Say They Finally Have an AI Hardware Prototype
    by BeauHD on 25/11/2025 at 12:45 am

    Sam Altman and Jony Ive say they've settled on a prototype for OpenAI's first hardware device that could ship in "less than" two years. The Verge reports: In an interview with Laurene Powell Jobs at Emerson Collective's 2025 Demo Day, they said they are currently prototyping the device, and when asked about a timeframe, Ive said it could arrive in "less than" two years. Little has been revealed so far about the OpenAI device in development, but it's rumored to be screen-free and "roughly the size of a smartphone." Altman described the design as "simple and beautiful and playful," adding that, "There was an earlier prototype that we were quite excited about, but I did not have any feeling of, "I want to pick up that thing and take a bite out of it,' and then finally we got there all of a sudden." Ive similarly emphasized simplicity and whimsy, saying, "I love solutions that teeter on appearing almost naive in their simplicity, and I also love incredibly intelligent, sophisticated products that you want to touch, and you feel no intimidation, and you want to use almost carelessly, that you use them almost without thought, that they're just tools." Altman went on to comment, "I hope that when people see it, they say, 'That's it!,'" to which Ive responded, "Yeah, they will." Read more of this story at Slashdot.

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