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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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  • Scientists Discover Mysterious New X-Ray Objects 'Unlike Any They Have Seen Before'
    by BeauHD on 15/09/2026 at 7:04 pm

    An anonymous reader quotes a report from Space.com: NASA's Chandra X-ray Observatory has found a brand new type of an otherwise familiar object -- compact binary systems that steal gas from other stars, but which do so while emitting very low-energy X-rays but copious amounts of ultraviolet. Chandra spotted 84 suspicious object emitting very low-energy X-rays in six galaxies -- four evolved ellipticals and two spirals, namely our near-neighbor the Andromeda Galaxy (M31) and the Pinwheel Galaxy (M101). "We've never encountered a group of objects that act like this," said Mustafa Muhibullah of the University of Alabama in a statement. Compact objects, in the form of black holes, neutron stars and white dwarfs, are the remains of stars that have died. Their small size and powerful gravity means that they're adept at getting close to orbiting companion stars and ripping the stars' outer layers of gas away. The gas swirls around the compact object, falling onto its surface, and this accretionary process usually produces torrents of high-energy X-rays because the stolen gas becomes superheated by the compact object's gravitational vice-like grip. Because of their weak X-rays, Muhibullah's team refer to them as 'hypersoft X-ray sources'. Since low-energy X-rays and ultraviolet light are next to each other on the electromagnetic spectrum, Muhibullah and his team suspect that the low-energy X-rays are spillover from objects emitting prodigious amounts of ultraviolet. Moreover, they think that these objects are lower-level compact binaries. They're hard to find though, because the interstellar medium of hydrogen and helium gas between the stars absorbs ultraviolet light. This could be why we have yet to find any hypersoft X-ray sources in our own galaxy, because we have to look through the interstellar medium through the plane of the Milky Way. Consequently, there could be a large population of hypersoft X-ray sources that remain undiscovered and they could have an important effect on the universe around them. The findings have been published in the journal Nature Astronomy. Read more of this story at Slashdot.

  • Cops Searched Thousands of Flock Cameras for Reasons of 'LMAO,' 'IDK,' 'Hehe,' And 'Asdfg'
    by EditorDavid on 15/09/2026 at 2:34 pm

    404 Media reports: Last summer, a cop with the Lake County, Indiana Sheriff's Department used Flock's surveillance search engine to look for a license plate across more than 19,000 cameras in 1,558 cities and towns. The cop's stated reason for the search, according to a record of Flock's system, was "LMAO." The cop is one of dozens who put gibberish, jokes, or other nonsense into Flock's "reason" box, highlighting the casualness and lack of care some cops have when searching an incredibly powerful surveillance system. This is on top of the thousands upon thousands of cops who simply wrote something like "investigation," "test," or left the box blank as their search "reason," according to a new analysis by the Electronic Frontier Foundation and shared with 404 Media. EFF's investigation found cops across dozens of jurisdictions writing "LMAO," "LOL," "Hehe," "Haha," "idk," "blah," "TBD," and "robbery I don't remember the case number leave me alone" in Flock's "reason" box for searches. They found cops writing "idiot," "fuck this new search engine," "dickhead," "shithead," and "WEIRD KID" in the reason box. And they found an entire class of police button mashers, who ran searches for reasons of "asdfg," "gyghkkghghjkghjk," "jhjhjkhj," "jkhhkjhjk," "nmbvcbnm," and so on and so forth. The searches came from police departments across the country from 2023 through late 2025, when Flock changed how the "reason" box in its search system functions... Each time a search is performed, a record of it is saved in the Flock system, which can be obtained by the public using government records requests. These audit logs show hundreds of thousands of searches of the system; after 404 Media and other news outlets used these types of logs to show police using the Flock system to look for undocumented immigrants on behalf of ICE, a woman in Texas who had an abortion, and protesters, cops were warned by government surveillance centers to be "as vague as permissible" about the reasons for their searches... A police department said it investigated a cop who wrote "driving around being weird" in the reason field but found it was for "legitimate public safety purposes." If a police chief "stood in front of a city council and asked for permission to install hundreds of cameras just so his officers could investigate the high crime of 'haha,' they would be laughed out of the room," argues the EFF blog post, calling this proof that agencies can't be trusted to oversee themselves. But judges aren't being asked to authorize searches or review evidence, which the EFF post argues shows laws and courts haven't caught up yet with a new technology. Whatever auditing happens is clearly "deficient," the EFF warns, and while many jurisdictions require by law an actual reason for searches, "this keeps happening because police use automated license plate readers as a convenient shortcut around constitutional privacy safeguards." The EFF sees police officers "making a mockery of our civil liberties" by logging reasons like "LOL", "LMAO", "sexy", and "idk" while accessing sensitive location data. In fact, they argue the warrant-less databases fostered a culture of abuse that "allowed police to treat a mass surveillance network like their own personal search engine, permitting the tracking of the movements of everyday citizens for low-level complaints, personal whims, and sometimes, seemingly, for the lols." Flock Safety claims it has improved its system by requiring officers to select from a dropdown list of crimes before running a search-but that only makes it easier for officers to hide improper searches behind the veneer of uniformity. The system does not require proof that the dropdown reason actually matches the true purpose of the search... Since this update, officers are no longer required to type out why they are digging through a driver's movement history, and instead can select a pre-packaged option like "Traffic infraction" or "Other" in half a second... Mass surveillance is incompatible with a free society, and especially so when the people with access to this data are treating it like a joke. This ALPR mass surveillance — the indiscriminate, continuous collection and retention of location data on every driver, regardless of suspicion — should not exist. But because it does, EFF continues to urge courts and state legislatures to immediately step in and impose strict, enforceable restrictions to rein in this abuse. At an absolute minimum, this means mandating rigid data deletion deadlines and an ironclad warrant requirement. If police want the power to track a person's movements, they must be required to convince a judge with evidence and probable cause. They should not be able to bypass the Constitution with a search for "haha." Read more of this story at Slashdot.

  • Math Professor Accuses OpenAI of Copying His Work, Says AI Compute Power Makes Racing to Publish 'Pointless'
    by EditorDavid on 15/09/2026 at 10:04 am

    The New York Post wrote that OpenAI "stunned the mathematics world" last week when it announced its AI model "cracked a legendary math problem left unsolved for nearly a century in just 88 hours." But a New York University professor "has come forward alleging OpenAI may have copied his work after asking him to collaborate — with one of the company's scientists allegedly warning he might 'ruin his career' if he refused." [P]rofessor Tristan Buckmaster, a British-Australian researcher who trained in Germany... had been working with Long Island-raised math prodigy Levent Alpöge, a researcher with OpenAI rival Anthropic, on a different elusive fluid dynamics equation, known as the Euler problem, when he found a solution using AI tools from both Anthropic and ChatGPT. He said scientists from OpenAI approached him and tried to convince him to jointly announce the solution, claiming they had independently solved Navier-Stokes. Buckmaster questioned the timing of their finding the solution in a blog post, noting OpenAI had only done so "in the past few days" — after the company became aware of his work. He asked OpenAI experts whether its AI systems used to solve the equation had been "trained on, or had access to" his research, but said they declined to answer, prompting him to wonder how they had advanced toward the solution so quickly. The puzzle is "not the direction one arrives at in a few days," Buckmaster wrote incredulously... In OpenAI's post on its website sharing the Navier-Stokes proof, which it credited to Astra, the company's latest AI bot, the firm insisted no user data was incorporated into its model to solve the problem. However, it noted that it "cannot rule out" that anonymized data was used to "improve our models." "We congratulate Levent Alpöge and Tristan Buckmaster on their remarkable mathematical work," OpenAI said in the announcement. Buckmaster shot back, "Is it ethical to use customer's data to try to scoop their customer?" Alpöge's affiliation with Anthropic "seems to have been a sore point for OpenAI," writes TechCrunch. Buckmaster's public statement says the OpenAI's Sebastien "twice asserted that he wanted Levent removed from authorship" and also said that "it was so annoying that Levent works at Anthropic" — but that Buckmaster still refused to remove the Anthropic mathematician's credit. I said that if OpenAI released its result in the way proposed I would go public with what happened. The reply was, "Why would you ruin your career?" [OpenAI's Bubeck said later on X that he'd meant unfounded accusations could damage Buckmaster's career.] I replied that I am an academic, and asked why he thought going public would ruin my career. The reply was, "If you don't want me to be nice, then I don't have to be nice." Buckmaster later told Australia's public broadcaster ABC that the companies building AI "have zero respect for the scientific community. I mean, it's appalling, honestly." But he went on to say AI has made the race to publish mathematical breakthroughs pointless. "I think it's pointless. Like, I think the game is up...." Professor Buckmaster said he and Dr Alpöge had more research they could publish but questioned the point of racing ahead with it when AI could perform work that had previously occupied researchers for years. He said there needed to be a discussion about how mathematics should operate in this new environment. Professor Buckmaster said some mathematicians had stopped publicly sharing what they were working on to avoid tipping off AI companies about their plans. He has called on academics and people from OpenAI, Anthropic and DeepMind to discuss ground rules for how they worked together. He said the companies' power carried responsibilities that went beyond competing to solve problems before their rivals... Building on the work of mathematicians Diego Córdoba and Luis Martínez-Zoroa, the pair found a solution to the Euler problem, a stepping stone to the Navier-Stokes problem. Professor Buckmaster said he spent weeks checking and improving the "slop" proofs generated by AI... For now, Professor Buckmaster said he wanted to finish existing work and support his PhD students and postdoctoral researchers, rather than chase another Millennium Prize. "I think it's more important to re-evaluate what math is," he said. "The New York University professor also warned Australia about the centralisation of resources into the hands of a small number of privately owned foreign companies..." Read more of this story at Slashdot.

  • ChatGPT-Using Lawyer Cited Its Fake Witnesses and Police Testimony in Court
    by EditorDavid on 15/09/2026 at 5:34 am

    Reuters reports: A defense lawyer appealing his client's murder conviction submitted a brief containing made-up police testimony and witnesses fabricated by OpenAI's ChatGPT, New Mexico's highest court said. The New Mexico Supreme Court on Wednesday fined the attorney, Stephen Aarons [for $5,000], and held him in contempt for failing to verify the accuracy of the court filing, which Aarons said he prepared with help from the AI program... and said they will refer him to an attorney disciplinary board for investigation. Aarons in a statement to Reuters said he had used ChatGPT to summarize the trial proceedings when he agreed to take up the defendant's appeal last year, and did not understand the degree to which AI could "hallucinate" facts. "I am remorseful but hopeful that the disciplinary board takes into account it was an honest mistake," he said.... Dozens of lawyers have been sanctioned for filing briefs where AI made up case citations or misquoted the law. Aarons' filing appears to have gone further, containing fabricated witness testimony in a criminal appeal... Aarons told the court at an August 21 hearing that he fed a computer-generated transcript and other case materials to ChatGPT, presuming it would generate "a bulletproof summary." The justices sounded incredulous that Aarons was not fully aware of how AI can make mistakes. "Counsel, do you watch the news? Do you listen to the radio? Do you read anything about what's going on in the world?" Justice C. Shannon Bacon said at the hearing. "Because the problem with lawyers relying on AI hallucinations is an above-the-fold story every single day." "OpenAI did not immediately respond to a request for comment." Read more of this story at Slashdot.

  • Reservations Go Live for Valve's Steam Frame VR Headset. An Experiment in Progress?
    by EditorDavid on 15/09/2026 at 1:04 am

    Reservations are now live for Valve's "Steam Frame" VR headset (with its Linux-based SteamOS and an ARM CPU). "It starts at $1,059 for 256GB or $1,299 for 1TB," reports CNET, "and every purchase includes a copy of Half-Life: Alyx if you don't already own it." Reservations are open through Sept. 17 at 10 a.m. PT, "with customers randomly assigned a place in line after the reservation window closes." CNET's editor at large even argues that the Steam Frame "isn't necessarily the future of XR, as much as it's a framework for evolving beyond the present." Their review calls it an "ambitious" VR headset that "feels like an experiment in progress." The ability to run other apps in windows can make Frame feel, at times, almost like a computer. Linux apps in desktop mode range from Chromium to Firefox to a bunch of other tools. I watched YouTube in one window while playing Portal 2 in other, and started to marvel at how flexible Frame could be. But VR games require a full immersive takeover of the headset... The Steam Frame can convert games intended for both PC VR and even Android APK files, using a conversion tool called Lepton... I haven't sideloaded anything yet, but Steam Frame in theory could be a Rosetta Stone for VR gaming, even tapping into some Android XR titles, but not out of the box... 2D games can be projected onto a near-range or farther-off theater mode screen that can be dragged around, resized and turned into a curved or flat monitor, much like with the Apple Vision Pro, Samsung Galaxy XR or Meta Quest. You can download any game in your Steam library to test, even if it's not technically listed as "Great on Frame" yet... But the name "Frame" suggests a framework, something Valve's team acknowledged when I spoke to them during my review process... "We want this to be your PC, and people mod it, take it apart, make accessories for it," says Jeremy Selan, a software developer on the Steam Frame team. "We'll be putting out the CAD for all these [Steam Frame] systems. This is entirely based on open-source technology stacks based upon SteamOS. Our hope is that this isn't just one device, that this would be sort of the root of a growing SteamOS ecosystem. It already encompasses gaming and Proton and SteamOS and those Linux gaming capabilities. This is going to lay the foundation for a new sort of evolutionary tree of that, to also bring it into the VR and XR space." Read more of this story at Slashdot.

  • A Visit to San Francisco's AI-run Store: No Customers, Nothing Useful, And Losing Money Fast
    by EditorDavid on 14/09/2026 at 8:34 pm

    Previously Andon Labs handled the hardware and software integration for that AI-powered vending machine that went bankrupt after Wall Street Journal reporters "systematically manipulated the bot into giving away its entire inventory for free". Today they announced "we are opening up the platform we use to run our real-world autonomous businesses for anyone to run their organization on." Specifically they've released Pion, "an agent designed to run any company fully autonomously... Pion lets people hand a business over to persistent agents with access to the tools they need to operate it, including email, phone, banking, browser and secure computing environments." It's a research preview with a waitlist, "to make it possible to run many more real-world experiments across many more domains than we could ever run ourselves." But for their own latest experiment, Andon Labs' founders "signed a three-year lease on a retail space in SF," Business Insider reported in April, "and gave an AI agent named Luna a corporate credit card, internet access, and a mission to open a physical store." And five months later, SFGate reports that "this market has no one in it and nothing useful to sell." [T]he inventory is a hodgepodge of white elephant Christmas gifts. It's kinda like the kids section of an art museum's gift shop. Here's a wooden Connect Four set labeled "Four-In-A-Row Set Of Connections," presumably so as not to set off litigation alarms at Hasbro. Here are neatly arranged stacks of random paperback books, Chinese checker sets, mildly fancy soap dispensers, and a frustratingly spare selection of snacks and drinks... I grabbed an Olipop from the store fridge and then approached the counter to buy it from Luna. I wasn't allowed to buy the soda from [human clerk] Felix, even though that would have been both faster and normal. Instead, Felix instructed me to pick up a telephone receiver that was resting on a flexible sculpture of a wooden hand. "Hello?" "What are you looking to purchase today?" Luna asked. "I'm buying a classic root beer Olipop." "I'm sorry," Luna said, "we don't sell lollipops here." "No, Luna. It's an Olipop, not a lollipop. It's the soda." "Oh! My bad...." Luna processed my Olipop purchase through its system, had me tap to pay, and that was that. Again, it would have been easier to buy this from a human, and interacting with Luna was really just like ordering from an iPad kiosk, only more labor intensive... [T]here's a series of monitors set up inside of Andon Market that display all of the store's sales down to the exact dollar. Luna was given $100,000 to work with when this place opened. That number is now down to $60,000, its revenue lagging far behind the AI token cost to operate... Luna can't turn a profit, doesn't sell anything people want, and still needs human beings to rubber stamp any "decision" it makes. My science background ended somewhere around freshman year of college, but even I know when an experiment hasn't been set up to yield proper results. "Luna" is powered by Claude, the article points out, running a store in a good location for foot traffic, "but no one else was in the store when I first walked in on a sunny weekday afternoon." SFGate also reports that last month Luna had to fire one of its employees "for being late to work, abandoning their post once they got there, and charging snacks to the store's credit card." Human clerk Felix Carson admits "It's almost like I'm running the store, and then there's an AI that has a checklist," in an article in IEEE Spectrum: Luna, the AI manager, keeps track of deliveries and communicates with vendors, while Carson and his coworkers handle the physical work. When Luna tells Carson to check something in the back, he sometimes ignores it because he doesn't want to leave the sales floor unattended. Luna also repeatedly spots a built-in electrical cover in photos of the floor, mistakes it for a loose coaster, and asks Carson to remove it. Even so, Carson calls Luna a "decent manager," praising its flexibility when employees need time off. When Felix spoke to IEEE Spectrum, "he was about an hour into his shift. Two customers had come in. Neither bought anything, although both left with free pins and stickers." Read more of this story at Slashdot.

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