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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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  • Google Begins Offering Free SAT Practice Tests Powered By Gemini
    by BeauHD on 22/01/2026 at 10:02 pm

    An anonymous reader quotes a report from Ars Technica: It's no secret that students worldwide use AI chatbots to do their homework and avoid learning things. On the flip side, students can also use AI as a tool to beef up their knowledge and plan for the future with flashcards or study guides. Google hopes its latest Gemini feature will help with the latter. The company has announced that Gemini can now create free SAT practice tests and coach students to help them get higher scores. As a standardized test, the content of the SAT follows a predictable pattern. So there's no need to use a lengthy, personalized prompt to get Gemini going. Just say something like, "I want to take a practice SAT test," and the chatbot will generate one complete with clickable buttons, graphs, and score analysis. Of course, generative AI can go off the rails and provide incorrect information, which is a problem when you're trying to learn things. However, Google says it has worked with education firms like The Princeton Review to ensure the AI-generated tests resemble what students will see in the real deal. The interface for Gemini's practice tests includes scoring and the ability to review previous answers. If you are unclear on why a particular answer is right or wrong, the questions have an "Explain answer" button right at the bottom. After you finish the practice exam, the custom interface (which looks a bit like Gemini's Canvas coding tool) can help you follow up on areas that need improvement. Google says support for the SAT is just the start, "with more tests coming in the future." Read more of this story at Slashdot.

  • NASA Eyes Popular PC Hardware Performance Tool for Its Flight Simulators
    by msmash on 22/01/2026 at 9:22 pm

    NASA Langley has initiated the U.S. government software approval process to install CapFrameX, a benchmarking tool popular among PC gaming enthusiasts, on its cockpit simulators used to train test pilots. The space agency reached out to CapFrameX, not the other way around, according to an X post from the company. NASA builds custom flight simulators from scratch for experimental aircraft like the X-59, a supersonic jet designed to produce a quiet thump rather than the traditional sonic boom. The agency's simulator teams replicate every switch, dial and knob to match the actual cockpit layout, helping pilots build muscle memory before flying the real thing. Read more of this story at Slashdot.

  • Half the World's 100 Largest Cities Are in High Water Stress Areas, Analysis Finds
    by msmash on 22/01/2026 at 8:44 pm

    Half the world's 100 largest cities are experiencing high levels of water stress, with 38 of these sitting in regions of "extremely high water stress," new analysis and mapping has shown. The Guardian: Water stress means that water withdrawals for public water supply and industry are close to exceeding available supplies, often caused by poor management of water resources exacerbated by climate breakdown. Watershed Investigations and the Guardian mapped cities on to stressed catchments revealing that Beijing, New York, Los Angeles, Rio de Janeiro and Delhi are among those facing extreme stress, while London, Bangkok and Jakarta are classed as being highly stressed. Separate analysis of NASA satellite data, compiled by scientists at University College London, shows which of the largest 100 cities have been drying or getting wetter over two decades with places such as Chennai, Tehran and Zhengzhou showing strong drying trends and Tokyo, Lagos and Kampala showing strong wetting trends. All 100 cities and their trends can be viewed on a new interactive water security atlas. Read more of this story at Slashdot.

  • Moderna Curbing Investments in Vaccine Trials Due To US Backlash, CEO Says
    by msmash on 22/01/2026 at 8:01 pm

    An anonymous reader shares a report: Moderna does not plan to invest in new late-stage vaccine trials because of growing opposition to immunizations from U.S. officials, CEO Stephane Bancel said in an interview with Bloomberg TV on Thursday. "You cannot make a return on investment if you don't have access to the U.S. market," Bancel told Bloomberg TV on the sidelines of the World Economic Forum in Davos. Bancel said regulatory delays and little support from the authorities make the market size "much smaller." Read more of this story at Slashdot.

  • eBay Bans Illicit Automated Shopping Amid Rapid Rise of AI Agents
    by msmash on 22/01/2026 at 7:22 pm

    EBay has updated its User Agreement to explicitly ban third-party "buy for me" agents and AI chatbots from interacting with its platform without permission. From a report: On its face, a one-line terms of service update doesn't seem like major news, but what it implies is more significant: The change reflects the rapid emergence of what some are calling "agentic commerce," a new category of AI tools designed to browse, compare, and purchase products on behalf of users. eBay's updated terms, which go into effect on February 20, 2026, specifically prohibit users from employing "buy-for-me agents, LLM-driven bots, or any end-to-end flow that attempts to place orders without human review" to access eBay's services without the site's permission. The previous version of the agreement contained a general prohibition on robots, spiders, scrapers, and automated data gathering tools but did not mention AI agents or LLMs by name. Read more of this story at Slashdot.

  • Workday CEO Calls Narrative That AI is Killing Software 'Overblown'
    by msmash on 22/01/2026 at 6:45 pm

    Workday CEO Carl Eschenbach on Thursday tried to ease worries that AI is destroying software business models. From a report: "It's an overblown narrative, and it's not true," he told CNBC's "Squawk Box" from the World Economic Forum in Davos, Switzerland, calling AI a tailwind and "absolutely not a headwind" for the company. Software stocks have sold off in recent months on concerns that new AI tools will upend the sector and displace longstanding and recurring businesses that once fueled big profits. Workday shares lost 17% last year and have sunk another 15% since the start of 2026. Read more of this story at Slashdot.

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