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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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  • Radical Study Suggests Life on Earth Arose Twice
    by BeauHD on 07/08/2026 at 11:00 am

    A new study argues that life may have emerged twice on Earth. "Two of the main lineages of life -- bacteria and archaea -- may have independently figured out the secrets of metabolism that upgraded them from non-living to living," reports ScienceAlert, citing a new study that "focused on the most rudimentary set of chemical reactions thought to enable this transformation." From the report: "The surprise is that the enzymes that catalyze those reactions are not conserved across the evolutionary divide that separates bacteria and archaea," says William Martin, a biologist at Heinrich Heine University Dusseldorf in Germany. "The new data leave only one conclusion. The bacterial and archaeal lineages made the transition to the free-living state independently. Only free-living cells are alive. "Let's call it by name: we are looking at one origin of the genetic code, but two origins of life." That's a huge claim to make, especially when defining what life even is can be surprisingly tricky. The findings have been published in the journal Science Advances. Read more of this story at Slashdot.

  • Dress Made of Living Mycelium Can Renew and Repair Itself
    by BeauHD on 07/08/2026 at 7:00 am

    Researchers in China have developed a living mycelium textile that can self-clean, renew its surface, and partially repair holes when treated with a nutrient solution and fresh fungus. The material can also gain added properties such as blue pigmentation or UV resistance by co-culturing it with yeast or other fungi. Dezeen reports: The breakthrough from the researchers at the Shenzhen Institutes of Advanced Technology is a type of engineered living material (ELM) -- a material built off living organisms that stay active even after they're fabricated into their final form. [...] By working with living but dormant cordyceps militaris fungus instead, the researchers have been able to take advantage of its biological functions. The result is a material that is self-renewing and responsive to its environment, in ways that could one day transform architecture and clothing -- as seen in a prototype dress created together with material innovation company Peelshere. It can also be adapted by mixing in other fungi or yeast, lead researcher Ke Li and her team detail in a paper in the peer-reviewed journal Science Advances. In it, they describe a "programmable fungal platform" where mycelium is treated like a modular system, with the sheet material forming a base structure and extra biological abilities, such as colour and UV resistance, becoming "plug-and-play" add-ons via other organisms. This gets their textile closer to the self-repair, environmental responsiveness and controllable functionality that is the promise of engineered living materials, they argue. The ELM's self-renewing and semi-repairing functionality comes from the mycelium base structure. Following drying at 45 degrees, the material is not quite living and not quite dead, but instead in a "low-metabolic, dormant-like state", Li told Dezeen, meaning it is not actively growing. However, new growth can be triggered by applying a nutrient solution of potato water, leading the dormant mycelium to germinate, send out new fungal filaments and renew the material's surface. When this nutrient solution is applied over a hole, along with a small patch of fresh fungus, it triggers the living cells to grow across the gap, seamlessly repairing the surface without any adhesives or stitching. The material is also naturally self-cleaning, as it is hydrophobic. "Its distinctive surface texture, biological colouring, controlled repair and biodegradability may be particularly useful in applications where visual expression and a defined product lifetime are important," said Li. "Further improvements in durability, moisture resistance, safety and manufacturing consistency would be needed before it could be considered for routine clothing or permanent architectural use." Read more of this story at Slashdot.

  • Scientists Make First Viruses Designed By AI
    by BeauHD on 07/08/2026 at 3:30 am

    An anonymous reader quotes a report from The Guardian: Scientists have made the first viruses designed by artificial intelligence in a milestone that raises hopes for new medicines but also concerns over how to ensure the technology remains safe. The viruses are specific kinds known as bacteriophages, which only infect bacteria and are used around the world to treat patients with persistent infections. In lab tests, a cocktail of the AI-designed viruses killed E coli bugs that were resistant to natural bacteriophages. Dr Brian Hie, a chemical engineer at Stanford University in California, used genome language models, the genetic equivalent of the large language models behind AI chatbots, to design functioning genomes for bacteriophages. The viruses were then made in the laboratory and pitted against E coli in a dish. The ability to "rapidly design" genomes and tune them for specific bugs while overcoming resistance could "transform phage therapy" and "expand biotechnological toolkits," the researchers wrote in the journal Science. But beyond the potential benefits, the scientists said the work raised "important biosafety, biocontainment and biosecurity considerations" and urged others who were designing whole genomes to "consult both safety and security professionals throughout the project." In an accompanying article, Prof Tom Inglesby and Dr Moritz Hanke at the Center for Health Security at Johns Hopkins University in Baltimore, reinforced the warning, writing: "Although this is promising for life sciences applications, it also raises urgent biosafety and biosecurity questions. The ability to compose viral genomes using generative AI now exists; the governance to safely steer it does not." Tom Ellis, a professor of synthetic genome engineering at Imperial College London, said the work was impressive, but revealed how hard it would be to make more complex genomes. "This is literally the smallest and easiest genome to make," he said. An AI trained on the genetic code of dangerous bugs could be used to design more harmful viruses, Ellis said, but controlling access to genetic data and having restrictions on making genomes that look dangerous would help. "Governments are working hard to do this already," he added. "But honestly," he said, "the threat from full AI design and writing of a genome of a virus or bacteria is very overblown when we consider that just taking existing pathogens and making gain-of-function changes to their genomes is so much easier and much more likely to be a real pathogenic threat." Dr Filippa Lentzos, a reader in science and international security at King's College London, said the most important point to intervene at the moment was when DNA was being manufactured. "It's important to see the bigger governance picture and not focus regulation solely on the AI model," she said. "A layered approach makes more sense: safeguards around model development and access, responsible research review, synthesis screening, and established laboratory biosafety and biosecurity." Read more of this story at Slashdot.

  • Court Orders Meta To Establish $567 Million Fund To Abate Harms To Youth
    by BeauHD on 07/08/2026 at 1:00 am

    A New Mexico court ordered (PDF) Meta to create a $567 million fund to address harms linked to youth mental health and child sexual exploitation after finding its platforms constituted a public nuisance. "In sum, the Court finds that New Mexico is in the midst of a teen mental health crisis affecting public health and public safety in and throughout the state, and that Meta's platforms are a significant contributing cause to the crisis," wrote Chief Judge Bryan Biedscheid in the decision. The fund comes on top of $375 million in civil penalties, though the judge declined to mandate changes to features such as infinite scroll and autoplay, citing potential First Amendment and Section 230 concerns. Tech Policy Press reports: The decision follows the second phase of in the State of New Mexico v. Meta Platforms Inc., which consisted of a bench trial. Its central question was whether Meta's platforms amounted to a public nuisance in New Mexico, and, if the court found that they did, what remedy would be needed to address it. In March, a Santa Fe jury found Meta liable for violations of New Mexico's Unfair Practices Act, awarding $375 million in civil penalties. The jury deliberated less than a day following that nearly seven-week trial. The $567 million abatement fund would be in addition to the civil penalties, according to today's decision. New Mexico Attorney General Raul Torrez sued Meta in December 2023, alleging the company made false public statements about the safety of its platforms while knowing internally that its products facilitated child sexual exploitation. The court denied Meta's Section 230 defense in May 2024. In today's decision, the court again asserted that "Section 230 does not preclude the State's public nuisance claim," but the decision attempted to thread the needle on issues that the court determined might have run "afoul" of the statute, or of the First Amendment, such as issuing remedies around any particular product feature. Read more of this story at Slashdot.

  • Google's $15 Billion India Data Center Project Battles Water, Wildlife Concerns
    by BeauHD on 06/08/2026 at 11:00 pm

    Google's $15 billion data-center project in Visakhapatnam is facing protests and legal challenges over fears that it will worsen local water shortages and disturb wildlife near the Kambalakonda sanctuary. Google says the campus will use advanced air cooling and comply with Indian law, while state officials deny that residential or rural water supplies will be tapped. Reuters reports: The southern state of Andhra Pradesh, governed by an ally of Prime Minister Narendra Modi who has hailed the project as historic and transformational, has denied allegations that the project was fast-tracked without weighing risks to water supplies and wildlife. But the growing opposition could become an early test for Google's biggest-ever India investment, which is facing several legal challenges over its impact on water supplies and proximity to a wildlife sanctuary that is home to leopards and pangolins. In recent weeks, activists and children have marched in Visakhapatnam city, holding banners saying "We cannot drink DATA" and painting handcuffs on the Google logo, social media posts show. On Sunday, Reuters attended a public gathering where activists chalked out plans for holding door-to-door awareness campaigns and beach protests in coming days. "Development should not be at the cost of livelihood of the people," Raja Rama Mohan Roy, founder of non-profit Green Visakha said at the event where he presented statistics on Visakhapatnam's stressed water supply and demand. The government says the city receives 410 million liters of water a day from its reservoirs and rivers, against a requirement of 480 million. Rationing of water supplies is common in the city with a population of 2.5 million people. [...] The state's top court on Monday asked the government to defend against allegations leveled by activist group Jal Biradari (Water Community), which says the project will strain water availability by putting stress on a nearby reservoir. The Andhra Pradesh High Court will next hear the public interest litigation on August 24. Read more of this story at Slashdot.

  • 'Tower Dump' Warrants Ruled Unconstitutional
    by BeauHD on 06/08/2026 at 10:00 pm

    alternative_right shares a report from The Hill: A federal judge in Mississippi ruled Wednesday that "tower dump" warrants are unconstitutional, declining to reverse a lower court decision refusing the government's request to obtain the search warrants in a series of violent crime investigations. A "tower dump" involves cellphone companies providing law enforcement with access to the time and location data of all mobile devices connected to specific cell towers during a designated time window. Law enforcement had sought approval for several of these search warrants as part of criminal investigations into gang-related activity in the Jackson, Miss., area last year, arguing the data could help identify all those potentially involved, particularly in incidents with unknown suspects. A magistrate judge denied the applications, holding that "tower dumps" are impermissible general warrants. The district judge agreed. The order repeatedly referenced the Supreme Court's recent decision in Chatrie v United States, in which the majority held that geofence warrants require constitutional privacy protections. "With this information, the Government asserts that it will be able to identify all potential suspects," Judge Carlton Reeves wrote in a 30-page order (PDF). "Even so, law enforcement would also have access to the cellular records of countless individuals, the vast majority of whom were merely passing by a location at the 'wrong' time." "That is an unreasonable search under the Fourth Amendment," the judge concluded. Read more of this story at Slashdot.

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