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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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  • NASA Rover Makes a Shocking Discovery: Lightning on Mars
    by msmash on 26/11/2025 at 5:28 pm

    An anonymous reader shares a report: It is shocking but not surprising. Lightning crackles on Mars, scientists reported on Wednesday. What they observed, however, were not jagged, high-voltage bolts like those on Earth, arcing thousands of feet from cloud to ground. Rather, the phenomenon was more like the shock you feel when you scuff your feet on the carpet on a cold winter morning and then touch a metal doorknob. "This is like mini-lightning on Mars," Baptiste Chide, a scientist at the Research Institute in Astrophysics and Planetary Science in Toulouse, France, said of the centimeter-scale electrical discharges. Dr. Chide and his colleagues reported the findings in a paper published on Wednesday in the journal Nature. The electrical sparks, although not as dramatically violent as on Earth, could play an important role in chemical reactions in the Martian atmosphere. Read more of this story at Slashdot.

  • Dell Says Windows 11 Transition is Far Slower Than Windows 10 Shift as PC Sales Stall
    by msmash on 26/11/2025 at 4:53 pm

    Dell has predicted PC sales will be flat next year, despite the potential of the AI PC and the slow replacement of Windows 10. From a report: "We have not completed the Windows 11 transition," COO Jeffrey Clarke said during Dell's Q3 earnings call on Tuesday. "In fact, if you were to look at it relative to the previous OS end of support, we are 10-12 points behind at that point with Windows 11 than we were the previous generation." Clarke said that means 500 million PCs can't run Windows 11, while the same number didn't need an upgrade to handle Microsoft's latest desktop OS. The COO therefore predicted the PC market will "flourish," but then defined the word as meaning "roughly flat" sales despite Dell chalking up mid-to high single digits PC sales growth over the last year. Read more of this story at Slashdot.

  • Apple Set To Become World's Top Phone Maker, Overtaking Samsung
    by msmash on 26/11/2025 at 4:24 pm

    Apple will retake its crown as the world's largest smartphone maker for the first time in more than a decade, lifted by the successful debut of a new iPhone series and a rush of consumers upgrading devices, according to Counterpoint Research. From a report: The iPhone 17 models introduced in September have been a hit both domestically in the US and in Apple's other critical market, China. They've enticed more people to upgrade, leading to double-digit year-over-year sales growth in both markets, according to the researchers. The US company also is benefiting from a cooling of US-China trade tensions and a depreciating dollar that has boosted purchases in emerging markets, they added. The growth will propel Apple past longtime rival Samsung this year, according to Counterpoint's figures. Shipments of the iPhone are set to grow at 10% in 2025, compared with 4.6% for Samsung. Read more of this story at Slashdot.

  • World's Central Banks Are Wary of AI and Struggling To Quit the Dollar, Survey Shows
    by msmash on 26/11/2025 at 3:22 pm

    An anonymous reader shares a report: AI is not a core part of operations at most of the world's central banks and digital assets are off the table, according to a survey released on Wednesday by the Official Monetary and Financial Institutions Forum. The working group of 10 central banks from Europe, Africa, Latin America and Asia managing roughly $6.5 trillion in assets also found that the institutions that have delved deepest so far into AI are the most cautious about the risks. The primary concern is that AI-driven behaviour could "accelerate future crises," the survey showed. "AI helps us see more, but decisions must remain with people," one participant was quoted as saying in the group's report. More than 60% of respondents said that AI tools - which have sparked layoffs already at technology companies and retail and investment banks - are not yet supporting core operations. Read more of this story at Slashdot.

  • The Underwater Cables That Carry the Internet Are in Trouble
    by msmash on 26/11/2025 at 2:48 pm

    The roughly 500 fiber-optic cables lying on the ocean floor carry more than 95% of all internet data -- not satellites, as many might assume -- and they face growing threats from natural disasters, terrorists and nation-states capable of disrupting global communications by dragging anchors or deploying submarines against the infrastructure. The cables are protected by layers of copper, steel, and plastics, but they remain vulnerable at multiple points: earthquakes can disturb them on the seafloor, and the connections where cables meet land-based infrastructure present targets for bad actors. National actors including Russia, China and the US possess the capability to attack these cables. A bipartisan Senate bill co-sponsored by Democrat Jeanne Shaheen and Republican John Barrasso is under consideration. The legislation would require a report to Congress within six months on Chinese and Russian sabotage efforts, mandate sanctions against foreign parties responsible for attacks, and direct the US to provide more resources for cable protection and repair. Read more of this story at Slashdot.

  • Malaysia's Johor Bans Low-Tier Data Centers Over Water Strain
    by msmash on 26/11/2025 at 2:00 pm

    Malaysia's Johor, one of Southeast Asia's fastest-growing data center hubs, has announced it will no longer approve applications for Tier 1 and Tier 2 data centers because of their enormous water consumption -- up to 50 million liters daily, or roughly 200 times what higher-tier facilities require. The Malaysian state has approved 51 data center projects as of November 2025. 17 centers are already operational, 11 are under construction and 23 received approval this year. The announcement follows concerns raised by a local politician who pointed to water supply disruptions in Georgia in the US after a data center began operations and protests in Uruguay over fears that data centers could affect farms. Read more of this story at Slashdot.

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