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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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  • Fully Autonomous Drones Have Killed Human Soldiers For the First Time
    by BeauHD on 11/06/2026 at 11:00 am

    Longtime Slashdot reader MattSparkes shares a report from NewScientist, captioned: "For years we've had unconfirmed reports, rumors, hints... now we know." From the report: Fully autonomous drones with no human oversight have killed soldiers on the battlefield for the first time. This is according to a senior figure in the Ukrainian defense industry, marking a watershed moment in warfare. The one-off test involved 10 AI-controlled "Terminator" drones on the front line of the Ukraine war. Russian soldiers were killed. "We tried it," says drone-maker Alexander Kokhanovskyy, who supplied the technology and spoke to New Scientist at a press event hosted by the Ukrainian embassy. "It's a test. We never implemented it [more widely]." The test took place two years ago and involved quadcopter drones that were programmed to fly towards the front line, cover between 3 and 5 kilometres over around 10 minutes and then engage "Terminator mode," in which an AI model searches for and intercepts targets. "We just launch it and we know everything will be dead -- everything that will be found there in this particular area will be dead," says Kokhanovskyy. "There is no connection to the drone at all, you cannot see the video, nothing... Everything it sees will be killed." With no way to tell what the automated drones had seen or targeted, human-piloted drones were sent into the area after the test to manually check results. Victims included "a couple of soldiers, one truck," says Kokhanovskyy. While there is no recording of the automated drones attacking these targets, it was concluded that the drones had killed them. Kokhanovskyy says that he was not at the test personally but that it was carried out by an unnamed military unit near the cities of Bakhmut and Chasiv Yar as part of a Ukrainian counteroffensive push. The Ukrainian Ministry of Defence did not respond to questions about the test or the current legal position on the use of fully autonomous weapons. Read more of this story at Slashdot.

  • Humans Prefer To Walk Anticlockwise, Scientists Find
    by BeauHD on 11/06/2026 at 7:00 am

    fjo3 shares a report from The Guardian: Tests reveal that when people are ambling about, they have a natural tendency to turn to the left and walk in an anticlockwise direction. "If you simply ask someone to start walking, whether they are wandering around a museum, a supermarket, or even an empty room, it is surprisingly likely that they will drift counterclockwise," said Dr Inaki Echeverria Huarte at University of Navarra in Spain. As with many critical discoveries in science, the revelation owes a debt to serendipity. During the pandemic, the researchers ran experiments to see how many people could share a space while keeping a safe distance. On reviewing the video, they noticed that crowds overwhelmingly walked in an anticlockwise direction. The surprise set in motion an entire research project. The scientists conducted a series of experiments in which individual pedestrians or small crowds roamed around enclosed spaces. Time and again, the researchers observed the tendency to walk in an anticlockwise direction. Suspecting that cultural norms might play a role, the team joined forces with Dr Claudio Feliciani at the University of Tokyo. He found the same results in Japan. The finding held when the researchers accounted for people being right-handed, right-footed and right-eye dominant, and was seen in both male and female walkers. The only difference they spotted was a more pronounced bias in children. "Each of us carries a small personal bias to turn slightly to one side, and when many people share a space, those tiny biases add up into a net counterclockwise rotation," said Echeverria Huarte. Researchers think the tendency may be tied to biomechanics: people are not perfectly symmetrical, and the way the brain processes sensory information and coordinates muscles may gently tip walkers toward one side. Right-side dominance may also play a role, especially in running, where anticlockwise movement puts more internal force on the right side of the body and may feel more natural to right-leg-dominant athletes. "We have tested several ideas and the bias stubbornly keeps showing up, so the exact mechanism is still an open question," said Echeverria Huarte. The findings have been published in Nature Communications. Read more of this story at Slashdot.

  • Solar Beats Coal In the US For the First Month Ever
    by BeauHD on 11/06/2026 at 3:30 am

    An anonymous reader quotes a report from Electrek: Solar generated more U.S. electricity than coal for the first month on record in May 2026, according to new analysis from global energy think tank Ember. Solar supplied 12.8% of U.S. electricity during the month, while coal dropped to 12.2%. That's a dramatic shift in the U.S. power mix. Just five years ago, coal generated 19.7% of U.S. electricity in May, while solar accounted for only 5.4%. U.S. solar generation hit a record 45.5 terawatt-hours (TWh) in May 2026, up 17% from May 2025 and higher than the previous record set last July. Ember says another record could be broken again this summer. Solar output usually peaks in June or July, but its share of the electricity mix is often highest in spring, when strong sunshine lines up with milder temperatures before summer cooling demand ramps up. May was also the first time solar became the third-largest individual source of electricity in the U.S., behind only natural gas and nuclear. (If solar is included with all other renewables, then they're the second-largest source of electricity as an overall category of electricity.) Meanwhile, coal keeps sliding (and will continue to slide). Coal generation hit an all-time monthly low of 39.3 TWh in April 2026. Output rose slightly in May to 43.4 TWh, but it was still 11% lower than May 2025 levels. Even with that small rebound, coal couldn't keep pace with solar's rapid growth. Read more of this story at Slashdot.

  • Microsoft Defender 'RoguePlanet' Zero-Day Grants SYSTEM Privileges
    by BeauHD on 10/06/2026 at 11:00 pm

    A researcher using the name Nightmare Eclipse has released a new Microsoft Defender zero-day exploit called "RoguePlanet," which reportedly works on fully patched Windows 10 and 11 systems and can spawn a command prompt with SYSTEM privileges through a Defender race condition. The release came just hours after Microsoft fixed two previously disclosed flaws during its latest monthly Patch Tuesday drop -- its largest Patch Tuesday release ever. BleepingComputer reports: The researcher shared a proof-of-concept exploit on Tuesday afternoon in a self-hosted Git repository after saying that GitHub and GitLab repositories hosting their exploits had previously been removed by Microsoft. "The exploit is a race condition, so it's a hit or miss. I have managed to get a 100% success rate on some machines while it struggled to work on others," Nightmare Eclipse wrote in the repository. [...] Cybersecurity firm ThreatLocker told BleepingComputer that they successfully reproduced the flaw in their testing and confirmed the exploit worked against fully patched Windows 11 systems with KB5094126 installed, and shared a video demonstrating it. "Our initial analysis confirms that the RoguePlanet exploit is viable and performs as described. Organizations using application allowlisting can prevent the exploit from executing, providing an effective layer of protection against this attack," Danny Jenkins, CEO of ThreatLocker, told BleepingComputer. According to Nightmare Eclipse, RoguePlanet was originally developed as a remote code execution vulnerability that exploited Microsoft Defender's handling of files hosted on remote SMB shares. "In initial development, it was confirmed that this vulnerability was a remote code execution," the researcher explained in a blog post. "It required an attacker to coerce a victim to open a .vhd(x) in a remote SMB server, succesful exploitation resulted in defender overwriting its own files and obviously the end outcome was an RCE." The researcher says another attack scenario could lead to remote code execution simply by coercing a victim into opening an SMB share if symlink evaluation settings were enabled. However, the researcher claims Microsoft silently hardened Defender in mid-May by patching "mpengine!SysIO*" API, which blocked junction attacks. "Rewriting RoguePlanet to make it functional again drained my soul and I couldn't complete the other scenarios and for now it remains unclear if RoguePlanet is limited to LPE or there is some sort of way to turn it into an RCE," the researcher wrote. Read more of this story at Slashdot.

  • Visa Plugs Its Payment Network Into ChatGPT
    by BeauHD on 10/06/2026 at 10:00 pm

    Visa is integrating its payment network with ChatGPT so AI agents can shop and complete purchases on users' behalf. "It means AI agents can not only recommend products but complete the purchase on the user's behalf, at potentially any merchant that accepts Visa," reports the Associated Press. "The payment network's previous attempts at this technological leap were confined to a single retailer or a small set of enrolled merchants." From the report: OpenAI will provide the technology to allow agents to interact, make decisions and initiate purchases through ChatGPT. Visa, the world's largest payment network outside of China, will provide the payment authorization and fraud monitoring needed to do this at scale. "As AI agents become active participants in the economy, Visa's focus is to ensure transactions are trusted, secure and seamless," said Jack Forestell, chief product and strategy officer at Visa. Speaking at a company event Wednesday in San Francisco Wednesday, Forestell gave an example of a customer telling ChatGPT they're looking for a pair of wireless headphones under $150. The chatbot would find a pair for sale under those parameters and buy it on behalf of the customer. Visa and OpenAI did not disclose the financial terms of the collaboration and did not give details on the fees merchants or customers would have to pay. [...] Visa says the feature will have guardrails like spending limits, required approval steps and approved merchants for shopping in order to protect consumers and minimize fraud. Read more of this story at Slashdot.

  • Valve Discontinues Physical Steam Gift Cards Due To Scammers
    by BeauHD on 10/06/2026 at 9:00 pm

    Valve is discontinuing physical Steam Gift Cards and says it will stop restocking them as retailers sell through remaining inventory. In a blog post, the company blamed persistent gift card scams as the reason, though Steam Digital Gift Cards will remain available and existing physical cards can still be redeemed. PC Guide reports: Valve says it has "responded to gift card scams over the years" -- but this doesn't stop scammers from adapting. The Steam creator has actively worked with retailers and law enforcement, among other precautions, to counteract scams, but says the issue can never be fully resolved. Steam Digital Gift Cards will continue to operate as normal. Read more of this story at Slashdot.

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