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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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  • Astronauts Take First X-Rays In Space
    by BeauHD on 15/07/2026 at 11:00 am

    Astronauts on SpaceX's Fram2 mission successfully captured diagnostic X-ray images in orbit for the first time. The milestone gives space medicine a second imaging option beyond ultrasound and could help future crews diagnose injuries, inspect equipment, and support longer missions to the moon or beyond. Popular Science reports: Commercial off-the-shelf X-ray machines like the ice cooler-sized MinXray TR90BH now allow users to perform scans on subjects far away from traditional facilities. In 2022, [Mayo Clinic researcher Sheyna Gifford] assisted in preparing a crew to successfully generate digital X-rays while experiencing microgravity during a parabolic flight. Gifford's team then spent years collaborating with SpaceX to plan another feasibility study. This time, they didn't want to operate an X-ray machine aboard an aircraft simulating the conditions in space -- they intended to use the equipment during an orbital mission. The process was detailed in a recently published study in the journal Radiology, and focuses on last year's Fram2 mission. Instead of days of medical training, astronauts spent only four hours learning how to use their portable radiography device. They then took preflight X-rays of a hand, forearm, chest, abdomen, and pelvis ahead of their SpaceX Falcon 9 rocket launch on March 31, 2025. Once in orbit, the team calibrated the system before testing their MinXray on the same body parts as well as a smartwatch. Once the crew returned, a trio of independent radiologists reviewed the orbital X-ray images based on their positioning, spatial and contrast resolutions, and general scan quality. Although positioning scores were slightly decreased for the central body images, every other scan held up to similar examples created on Earth. Meanwhile, the astronauts reported that using the machine was easy despite minimal prior coaching. Looking ahead, researchers hope to conduct further X-ray tests during orbital missions, while continuing to reduce the overall size of equipment. Read more of this story at Slashdot.

  • House Votes For Permanent Daylight Saving Time
    by BeauHD on 15/07/2026 at 7:00 am

    The House voted 308-117 to pass the Sunshine Protection Act, which would make daylight saving time permanent nationwide and end the twice-yearly clock change. The bill faces an uncertain future in the Senate, "where one G.O.P. leader said it was unclear whether it could move ahead and at least one Republican appears inclined to try to block it," reports The New York Times. Some sleep experts oppose permanent daylight saving time, arguing that year-round standard time better aligns with circadian rhythms and winter morning safety. The New York Times reports: President Trump has championed the effort to save an extra hour of daylight before nightfall and make the time zone permanent, describing the ritual of moving clocks forward in the spring and back in the fall a "ridiculous, twice yearly production." "We are going with the far more popular alternative, Saving Daylight, which gives you a longer, brighter Day," Mr. Trump wrote in a social media post in May. "And who can be against that." A sizable bloc of Florida Republicans in Congress is leading the charge on legislation that would do just that, mandating daylight saving time nationwide for the entire year. Representative Vern Buchanan of the Tampa Bay area is backing the bill, and Representative Anna Paulina Luna, another Tampa Bay-area Republican, cosponsored it. House leaders agreed to allow a vote on the measure this week as a sweetener for Ms. Luna in their efforts to persuade her to lift a legislative blockade she had maintained as she sought to force Senate action on a voting restriction bill Mr. Trump has championed. Read more of this story at Slashdot.

  • Iran Abused Mobile Networks' Vulnerabilities To Locate US Military In Middle East
    by BeauHD on 15/07/2026 at 3:30 am

    An anonymous reader quotes a report from TechCrunch: The Iranian government abused well-known vulnerabilities in the global telecoms infrastructure to locate U.S. military personnel in the build-up to the Iran War, as well as in the early days of the conflict, according to Financial Times. The Iranian government exploited Signaling System 7, or SS7, a set of protocols for 2G and 3G networks that has long been the backbone of how cellular networks connect to each other to route subscribers' calls and texts around the world, the newspaper reported, citing research by the Mobile Surveillance Monitor, as well as anonymous government officials with knowledge of the spy campaign. Intelligence agencies have long abused SS7 to track cellphones abroad, which is what happened in this campaign. Using this technique, Iran was reportedly able to locate U.S. military forces stationed in military bases as well as hotels in Iraq, Bahrain, and other countries in the Middle East, which allowed the regime to strike them. These attacks resulted in several injuries. Apart from SS7, Iran also abused advertising technology used to serve tailored ads to cellphone users, another well-known surveillance technique that relies on everyday technology. Read more of this story at Slashdot.

  • OpenAI's First Device Will Be Moveable, Screenless Speaker Built as AI Companion
    by BeauHD on 14/07/2026 at 11:00 pm

    OpenAI is reportedly developing a screen-free, portable smart speaker meant to act as a personalized home computer and humanlike AI companion. "It will help control smart-home appliances, play media, answer questions, respond to messages and tap into the range of capabilities offered by OpenAI's ChatGPT," reports Bloomberg, citing people familiar with the matter. The device, expected to be unveiled this year and released in 2027, would mark OpenAI's first major hardware push after acquiring Jony Ive's io Products. Bloomberg reports: Apple sued OpenAI last week, accusing the company of stealing trade secrets. But OpenAI believes that the device veers significantly from anything Apple has on the market today and that it's unlikely that it violates trade secrets belonging to the iPhone maker, the people said. OpenAI's success in hardware will hinge on bringing a novel approach to the market -- something it aims to do with the smart speaker. For instance, the device's technology is meant to become increasingly personalized and proactive as it gains a deeper understanding of its owner over time, according to the people. OpenAI envisions the device anticipating needs, surfacing information proactively and serving as an expert on its user, they said. Though the speaker is designed to stay in the home, it will be easy to move around the house. OpenAI believes the product's defining feature will be its personality and ability to connect on a humanlike level with users. The speaker incorporates mechanical elements that can move on their own, creating a sense that it is alive and not just an object responding to commands. The machine also will draw on personal information such as emails to better understand its owner. The goal is for the device to feel like a companion and become a physical manifestation of OpenAI's ChatGPT. Still, the exact plans could change as the company works through the development and legal process. The device's communication abilities will rely on a more advanced version of the ChatGPT Voice Mode -- GPT-Live -- that OpenAI rolled out this month. The new voice mode is designed to act more like a human. It can listen and talk at the same time, adapt more naturally during conversations, and quickly process information. Though the new product resembles a speaker, OpenAI internally describes it as the first of its kind: a computer built for AI to help make busy people more productive. It includes a camera and other sensors that help it understand a user's surroundings and context, as well as advanced AI models beyond those available on conventional smart speakers. Another central difference is that the device includes a rechargeable battery, allowing it to be carried from room to room throughout the day. A user could bring it into the laundry room while doing chores, move it into the kitchen for cooking assistance, and later place it in a living room or bedroom to have it play music. It can also remain plugged into a single room if the customer chooses. Read more of this story at Slashdot.

  • Google Images Gets a Pinterest-Like Redesign Focused On Discovery
    by BeauHD on 14/07/2026 at 10:00 pm

    Google Images is getting a Pinterest-like redesign that turns image search into a personalized discovery feed, with "For You" galleries, real-time updates, and collections for saving visual ideas. "Google is also adding a way for users to create AI images right in Search, as it celebrates 25 years since the debut of Google Images," reports TechCrunch. From the report: After navigating to the redesigned Google Images, users will see a "For You" gallery of images tailored to their interests and browsing history. Like Pinterest, the gallery is designed for continuous browsing, with Google saying it updates in real time with new images. As users browse, they can save ideas to their "collections," which will appear as tabs above the main gallery of photos. For example, users can create collections for things like vacation outfit ideas, travel inspiration, and ways to design a reading nook, which they can come back to later. [...] As for generating images directly in Search, Google says the feature is meant for moments when you have a highly specific idea for an image that doesn't already exist online. Google is bringing image generation directly into AI Overviews on Search and will use its latest Nano Banana model to transform a text prompt into a custom visual. The feature can also help users reimagine spaces and visualize ideas, such as seeing what a room might look like painted red or what a dorm room with a coastal theme could look like. Read more of this story at Slashdot.

  • Lawsuit Claims Meta's Layoff Decisions Were Made By AI, Not Humans
    by BeauHD on 14/07/2026 at 9:00 pm

    A lawsuit from 26 Meta employees alleges the company used AI-driven scoring and monitoring systems to select workers for layoffs, disproportionately targeting employees with disabilities or those who had taken protected medical, family, pregnancy, or parental leave. "Meta did not assemble the termination list through the considered judgment of managers who knew the work. Instead, Meta used a constellation of internal artificial-intelligence systems -- including a system referred to internally as 'Metamate,' employee-trained 'second-brain' agents, keystroke- and activity-monitoring data, AI-token-usage dashboards, and algorithmically assisted performance ranking and calibration -- to score, rank, and select employees for inclusion on the list," the lawsuit (PDF) said. Ars Technica reports: Employees were allegedly graded, among other things, on how much they used Meta's AI tools. "Meta's internal dashboards classified employees by their stage of adoption of its artificial-intelligence tools, using categories such as 'AI Native,' 'AI First,' and 'AI Enabled,'" the lawsuit said. The lawsuit is apparently "the first against a major U.S. company to challenge the alleged use of AI in conducting layoffs," according to Reuters. The complaint alleges that Meta's tools for monitoring employees did not account for differences caused by disabilities and protected leaves. "Those tools draw on inputs -- performance ratings, calibration scores, productivity and output metrics, 'AI-native' ratings, and AI-token consumption -- that, by design, cannot be accumulated by an employee who is on protected medical or family leave, or whose output is reduced by a disability," the lawsuit said. The lawsuit alleged that Meta management did not take steps to adjust scores for employees who took leave or who requested reasonable accommodations for disabilities. "Meta did not neutralize those inputs for protected leave; did not exclude protected-leave-takers or accommodation-seekers from the selection cohort; and did not pause the system for the individualized, leave- and accommodation-neutral review that the law requires," the complaint alleged. "The result was that employees who took protected leaves were disproportionately selected for layoff, based on scoring that not only failed to account for their protected leaves, but in effect penalized the employees for exercising their legal rights to these leaves." The 26 plaintiffs requested leaves or disability accommodations in the 24 months before being selected for layoffs, the lawsuit said. The layoffs are not yet finalized, but employees are scheduled to start losing their jobs on July 22, the lawsuit said. "These claims lack merit and are not based on facts," said Meta in a statement. "Workforce management and organizational decisions were and are made by people, not AI." Read more of this story at Slashdot.

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