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A Nice Little Cryptography Primer

By itss | 28/06/2021
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Pun Intended.

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  • Brave Browser Introduces 'Origin', a Pay-Once 'Minimalist' Browser
    by EditorDavid on 20/04/2026 at 4:34 am

    The Brave browser "has introduced Brave Origin, a stripped-down version of its browser that removes built-in monetization features like Rewards and other extras tied to its business model," writes Slashdot reader BrianFagioli" The stripped-down browser is available either as a separate browser download or as an upgrade to the existing Brave install, unlocked through a one-time purchase that can be activated across multiple devices. The idea is simple on paper: pay once, and you get a cleaner, more minimal browsing experience without the add-ons that fund Brave's ecosystem. What makes the move unusual is the pricing model itself. While paying to support a browser is not controversial, charging users specifically to remove features raises questions about whether those additions are seen as value or clutter. The situation gets even stranger on Linux, where Brave Origin is reportedly available at no cost, creating an uneven experience across platforms and leaving some users wondering why they are being asked to pay for something others get for free. Read more of this story at Slashdot.

  • Blue Origin Rocket Launches, Successfully Reuses Booster - But Loses Satellite
    by EditorDavid on 20/04/2026 at 2:50 am

    SpaceNews reports: Blue Origin's New Glenn suffered a malfunction of its second stage on the rocket's third flight April 19, stranding its payload in an unrecoverable "off-nominal" orbit and dealing the company a setback as it seeks to increase its flight rate... AST SpaceMobile had planned to launch 45 to 60 satellites this year for its D2D constellation, but BlueBird 7 is the first to launch since BlueBird 6 launched on an Indian LVM3 rocket in December. AST SpaceMobile still expects to have 45 satellites in orbit by the end of the year, the article notes. (In an earnings call in March, AST SpaceMobile's CEO had promised they'd soon start "stacking" satellites, "batched in groups of either three, four, six or eight in a single launch.") He'd added that "To support our launch cadence during 2026, we expect the New Glenn booster to be reused every 30 days or less..." There's some good news there, SpaceNews points out, since today saw the first successful reflight of a New Glenn first stage rocket: The booster, called "Never Tell Me The Odds" by Blue Origin, touched down on the company's landing platform, Jacklyn, in the Atlantic Ocean nearly nine and a half minutes after liftoff. The booster launched NASA's ESCAPADE Mars mission on the NG-2 flight in November. However, the booster reuse on NG-3 was only partial since the stage's biggest component, its BE-4 engines, was new. "With our first refurbished booster we elected to replace all seven engines and test out a few upgrades including a thermal protection system on one of the engine nozzles," Dave Limp, chief executive of Blue Origin, said in an April 13 social media post. "We plan to use the engines we flew for NG-2 on future flights." The satellite will now be "de-orbited", AST SpaceMobile said in a statement. (They added that "The cost of the satellite is expected to be recovered under the company's insurance policy.") Thanks to long-time Slashdot reader schwit1 for sharing the news. Read more of this story at Slashdot.

  • Voyager 1 is Running Out of Power. NASA Just Switched Part of It Off
    by EditorDavid on 19/04/2026 at 11:49 pm

    After 49 years of space travel, Voyager 1 "is running out of power," reports NPR: The spacecraft runs on a radioisotope thermoelectric generator — a device that converts heat from decaying plutonium into electricity. It carries no solar panels, no rechargeable batteries. Just the slow, steady release of nuclear warmth, which diminishes by about 4 watts each year. After nearly five decades, that decline has become critical. During a routine maneuver in late February, Voyager 1's power levels fell unexpectedly, bringing the probe dangerously close to triggering an automatic fault-protection shutdown — a self-preservation response that would have forced engineers into a lengthy and risky recovery process. The team needed to act first. On April 17, mission engineers sent a sequence of commands to deactivate the Low-energy Charged Particles experiment, known as the LECP, which is one of Voyager 1's remaining science instruments. The LECP has measured ions, electrons, and cosmic rays originating from both our solar system and the galaxy beyond it, helping scientists map the structure of interstellar space in a way no other instrument could... Voyager 1 now carries two operational science instruments: one that listens for plasma waves, and one that measures magnetic fields. Engineers believe the latest shutdown could buy the mission roughly another year of breathing room. The team is also developing a more sweeping power conservation plan they informally call "the Big Bang" — a coordinated swap of several powered components all at once, trading older systems for lower-power alternatives. If testing on Voyager 2, planned for May and June 2026, goes well, the same procedure will be attempted on Voyager 1 no sooner than July. If it works, there is even a slim chance the LECP could once more continue to work. The engineers say they hope to keep at least one instrument operating on each spacecraft into the 2030s. It would leave both still reporting from places no machine has ever gone before.111 Voyager 1 is now 15 billion miles from Earth, the article points out. (Radio signals take 23 hours to arrive...) Thanks to long-time Slashdot reader fahrbot-bot for sharing the article. Read more of this story at Slashdot.

  • Nobel Prize-Winning Physicist Predicts Humankind Won't Survive Another 50 Years
    by EditorDavid on 19/04/2026 at 9:57 pm

    Live Science spoke with physicist David Gross, who today received the $3 million "Special Breakthrough Prize in Fundamental Physics". He was part of a trio that won the 2004 physics Nobel prize for research that helped complete the Standard Model of particle physics. But when asked if physics will reach a unified theory of the fundamental forces of nature within 50 years, Gross has a surprising answer. "Currently, I spend part of my time trying to tell people... that the chances of you living 50 [more] years are very small." Cold War estimates for a 1% chance of nuclear war each year seem low, Gross says. "The chances are more likely 2%. So that's a 1-in-50 chance every year." David Gross: The expected lifetime, in the case of 2% [per year], is about 35 years. [The expected lifetime is the average time it would take to have had a nuclear war by then. It is calculated using similar equations as those used to determine the "half-life" of a radioactive material.] Live Science: So what do you suggest as remedies to lower that risk? Gross: We had something called the Nobel Laureate Assembly for reducing the risk of nuclear war in Chicago last year. There are steps, which are easy to take — for nations, I mean. For example, talk to each other. In the last 10 years, there are no treaties anymore. We're entering an incredible arms race. We have three super nuclear powers. People are talking about using nuclear weapons; there's a major war going on in the middle of Europe; we're bombing Iran; India and Pakistan almost went to war. OK, so that's increased the chance [of nuclear war]. I would really like to have a solid estimate — it might be more, and I think I'm being conservative — but a 2% estimate [of nuclear war] in today's crazy world. Live Science: Do you think we'll ever get to a place where we get rid of nuclear weapons? Gross: We're not recommending that. That's idealistic, but yes, I hope so. Because if you don't, there's always some risk an AI 100 years from now [could launch nuclear weapons], but chances of [humanity] living, with this estimate, 100 years, is very small, and living 200 years is infinitesimal. So [the answer to] Fermi's question of "Where are the civilizations, all the intelligent organisms around the galaxy, and why don't they talk to us?" is that they've killed themselves... There are now nine nuclear powers. Even three is infinitely more complicated than two. The agreements, the norms between countries, are all falling apart. Weapons are getting crazier. Automation, and perhaps even AI, will be in control of those instruments pretty soon... It's going to be very hard to resist making AI make decisions because it acts so fast. He points out that with the threat of climate change, "people have done something," even though "It's a much harder argument to make than about nuclear weapons. "We made them; we can stop them." Thanks to hwstar (Slashdot reader #35,834) for sharing the article. Read more of this story at Slashdot.

  • Is the Iran War Driving a Surge of Interest in Electric Cars?
    by EditorDavid on 19/04/2026 at 7:34 pm

    In October and through November, America's EV sales reached their lowest point since 2022 after government subsidies expired, remembers Time. "But first-quarter data for 2026 shows that used EV sales were 12% higher than the same time last year and 17% higher than the previous quarter. "One factor likely helping push buyers toward these cars is high gas prices, which recently topped $4.00 a gallon for the first time in four years," they write — but it's not just in the U.S. Instead, they argue the conflict "is driving a global surge of interest in electric vehicles..." In the U.K., electric car sales reached a record high, with 86,120 vehicles sold in March... The French online used-car retailer Aramisauto reported its share of EV sales nearly doubled from February 16 to March 9, rising to 12.7% from 6.5%, while sales of fueled models dropped to 28% of sales from 34%, and sales of diesel models dropped to 10% from 14%. Germany's largest online car market, mobile.de, told Reuters that the share of EV searches on its website has tripled since the start of March — from 12% to 36%, with car dealers receiving 66% more enquiries for used EVs than in February. South Korea reported that registrations for electric vehicles more than doubled in March compared to the prior year, due in part to rising fuel prices and government subsidies... In New Zealand, more than 1,000 EVs were registered in the week that ended on March 22, close to double the week before, making it the country's biggest week for electric vehicle registrations since the end of 2023, according to the country's Transport Minister, Chris Bishop. In America, Bloomberg also reports 605 high-speed EV charging stations switched on in just the first three months of 2025, "a 34% increase over the year-earlier period," according to their analysis of federal data. A data platform focused on EV infrastructure tells Bloomberg that speedier and more reliable chargers are convincing more drivers to go electric and use public plugs. Read more of this story at Slashdot.

  • Pancreatic Cancer MRNA Vaccine Shows Lasting Results In Early Trial
    by EditorDavid on 19/04/2026 at 6:34 pm

    NBC News reports on a 16-person clinical trial of "personalized messenger RNA vaccines" which use the immune system to fight cancer cells. "The goal is not to eliminate existing tumors, but instead to stamp out lingering, undetected cancer cells, and later any new cells that form before they can cause a recurrence." Patients still have surgery to remove tumors. After that, the mRNA vaccines are personalized for each individual using genetic material taken from their unique tumor cells. In the clinical trial, after getting the vaccine, the patients also received chemotherapy, which is standard post-op treatment for operable pancreatic cancer... [The article notes that less than 13% of people diagnosed with pancreatic cancer live for more than five years, making it "one of the deadliest cancers."] [E]xperts have long believed that people with pancreatic cancer could not generate an immune response against tumors. But after nine doses of the personalized vaccine, [clinical trial participant Donna] Gustafson is one of eight people in the 16-person Phase 1 trial who did just that, producing an army of immune cells called T cells that seek out and destroy tumor cells... [Dr. Vinod Balachandran, a vaccine center director who is leading the trial, said] it was unclear whether the immune response would last and lead to the patients living longer... New data collected during the trial's six-year follow-up period shows that it may. Those findings will be presented Monday at the American Association for Cancer Research's annual meeting in San Diego. Six years after treatment, Gustafson and six others who responded to the treatment are still alive... More research is still needed. Genentech and BioNTech, the two drugmakers behind the vaccine, have already launched a larger Phase 2 clinical trial... Another team is working on an off-the-shelf vaccine that targets a protein called KRAS that is present in as many as 90% of pancreatic cancers. In a small, early trial, about 85% of the participants mounted an immune response to the protein. Read more of this story at Slashdot.

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