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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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  • Texas Father Rescues Kidnapped 15-Year-Old Daughter After Tracking Her Phone's Location
    by EditorDavid on 28/12/2025 at 8:00 pm

    An anonymous reader shared this report from The Guardian: A Texas father used the parental controls on his teenage daughter's cell phone to find and help rescue her after she was kidnapped at knifepoint while walking her dog on Christmas, authorities allege... Her father subsequently located her phone through the device's parental controls, the agency's statement said. The phone was about 2 miles (3.2km) away from him in a secluded, partly wooded area in neighboring Harris county... She then managed to escape with a hand from her father, who called law enforcement officials, said the statement from the Montgomery sheriff's office. The suspect has since been arrested and charged. Read more of this story at Slashdot.

  • Up Next for Arduino After Qualcomm Acquisition: High-Performance Computing
    by EditorDavid on 28/12/2025 at 6:58 pm

    Even after its acquisition by Qualcomm, the EFF believes Arduino "isn't imposing any new bans on tinkering with or reverse engineering Arduino boards," (according to Mitch Stoltz, EFF director for competition and IP litigation). While Adafruit's managing editor Phillip Torrone had claimed to 36,000+ followers on LinkedIn that Arduino users were now "explicitly forbidden from reverse engineering," Arduino corrected him in a blog post, noting that clause in their Terms & Conditions was only for Arduino's Software-as-a-Service cloud applications. "Anything that was open, stays open." And this week EE Times spoke to Guneet Bedi, SVP of Arduino, "who was unequivocal in saying that Arduino's governance structure had remained intact even after the acquisition." "As a business unit within Qualcomm, Arduino continues to make independent decisions on its product portfolio, with no direction imposed on where it should or should not go," Bedi said. "Everything that Arduino builds will remain open and openly available to developers, with design engineers, students and makers continuing to be the primary focus.... Developers who had mastered basic embedded workflows were now asking how to run large language models at the edge and work with artificial intelligence for vision and voice, with an open source mindset," he said. According to Bedi, this was where Qualcomm's technology became relevant. "Qualcomm's chipsets are high performance while also being very low power, which comes from their mobile and Android phone heritage. Despite being great technology, it is not easily accessible to design engineers because of cost and complexity. That made this a strong fit," he said. The most visible outcome of this acquisition is Uno Q, which Bedi described as being comparable to a mid-tier Android phone in capability, starting at a price of $44. For Arduino, this marked a shift beyond microcontrollers without abandoning them. "At the end of the day, we have not gone away from our legacy," Bedi said. "You still have a real-time microcontroller, and you still write code the way Arduino developers are used to. What we added is compute, without forcing people to change how they work." Uno Q combines a Linux-based compute system with a real-time microcontroller from the STM32 family. "You do not need two different development environments or two different hardware platforms," Bedi added... Rather than introducing a customized operating system, Arduino chose standard Debian upstream. "We are not locking developers into anything," Bedi said. "It is standard Debian, completely open...." Pre-built models covering tasks like object detection and voice recognition run locally on the board.... While the first reference design uses Qualcomm silicon, Bedi was careful to stress that this does not define the roadmap. "There is zero dependency on Qualcomm silicon," he said. "The architecture is portable. Tomorrow, we can run this on something else." That distinction matters, particularly for developers wary of vendor lock-in following the acquisition. Uno Q does compete directly with platforms like Raspberry Pi and Nvidia Jetson, but Bedi framed the difference less in terms of raw performance and more in flexibility. "When you build on those platforms, you are locked to the board," he said. "Here, you can build a prototype, and if you like it, you can also get access to the chip and design your own hardware." With built-in storage removing the need for external components, Uno Q positions itself less as a faster board and more as a way to simplify what had become an increasingly messy development stack... Looking a year ahead, Bedi believes developers should experience continuity rather than disruption. The familiar Arduino approach to embedded and real-time systems remains unchanged, while extending naturally into more compute-intensive applications... Taken together, Bedi's comments suggest that Arduino's post-acquisition direction is less about changing what Arduino is, and more about expanding what it can realistically be used for, without abandoning the simplicity that made it relevant in the first place. "We want to redefine prototyping in the age of physical artificial intelligence," Bedi said... Read more of this story at Slashdot.

  • Google's 'AI Overview' Wrongly Accused a Musician of Being a Sex Offender
    by EditorDavid on 28/12/2025 at 5:34 pm

    An anonymous reader shared this report from the CBC: Cape Breton fiddler Ashley MacIsaac says he may have been defamed by Google after it recently produced an AI-generated summary falsely identifying him as a sex offender. The Juno Award-winning musician said he learned of the online misinformation last week after a First Nation north of Halifax confronted him with the summary and cancelled a concert planned for Dec. 19. "You are being put into a less secure situation because of a media company — that's what defamation is," MacIsaac said in a telephone interview with The Canadian Press, adding he was worried about what might have happened had the erroneous content surfaced while he was trying to cross an international border... The 50-year-old virtuoso fiddler said he later learned the inaccurate claims were taken from online articles regarding a man in Atlantic Canada with the same last name... [W]hen CBC News reached him by phone on Christmas Eve, he said he'd already received queries from law firms across the country interested in taking it on pro bono. Read more of this story at Slashdot.

  • How Will Rising RAM Prices Affect Laptop Companies?
    by EditorDavid on 28/12/2025 at 4:34 pm

    Laptop makers are facing record-setting memory prices next year. The site Notebookcheck catalogs how different companies are responding: Sources told [Korean business newspaper] Chosun Biz that some manufacturers have signed preliminary contracts with Samsung, Micron, and SK Hynix. Even so, it won't prevent DDR5 RAM prices from soaring 45% higher by the end of 2026.... Before the memory shortage, PC sales had been on the upswing in part because of forced Windows 11 upgrades. That trend will likely reverse in 2026, as buyers avoid Lenovo laptops and alternatives from its rivals. Realizing a slowdown in purchases is inevitable, postponed launches are one potential outcome. Other manufacturers, including Dell and Framework have already announced impending price hikes... [The article also cites reports that one laptop manufacturer "plans to raise the prices of high-end models by as much as 30%."] U.S.-based Maingear now encourages customers to mail in their own modules to complete custom builds. Yet, without recycling parts from older systems, that won't result in significant savings for consumers. Read more of this story at Slashdot.

  • Challenges Face European Governments Pursuing 'Digital Sovereignty'
    by EditorDavid on 28/12/2025 at 3:34 pm

    The Register reports on challenges facing Europe's pursuit of "digital sovereignty": The US CLOUD Act of 2018 allows American authorities to compel US-based technology companies to provide requested data, regardless of where that data is stored globally. This places European organizations in a precarious position, as it directly clashes with Europe's own stringent privacy regulation, the General Data Protection Regulation (GDPR)... Furthermore, these warrants often come with a gag order, legally prohibiting the provider from informing their customer that their data has been accessed. This renders any contractual clauses requiring transparency or notification effectively meaningless. While technical measures like encryption are often proposed as a solution, their effectiveness depends entirely on who controls the encryption keys. If the US provider manages the keys, as is common in many standard cloud services, they can be forced to decrypt the data for authorities, making such safeguards moot.... American hyperscalers have recognized the market demand for sovereignty and now aggressively market 'sovereign cloud' solutions, typically by placing datacenters on European soil or partnering with local operators. Critics call this 'sovereignty washing'... [Cristina Caffarra, a competition economistand driving force behind the Eurostack initiative] warns that this does not resolve the fundamental problem. "A company subject to the extraterritorial laws of the United States cannot be considered sovereign for Europe," she says. "That simply doesn't work." Because, as long as the parent company is American, it remains subject to the CLOUD Act... Even when organizations make deliberate choices in favour of European providers, those decisions can be undone by market forces. A recent acquisition in the Netherlands illustrates this risk. In November 2025, the American IT services giant Kyndryl announced its intention to acquire Solvinity, a Dutch managed cloud provider. This came as an "unpleasant surprise" to several of its government clients, including the municipality of Amsterdam and the Dutch Ministry of Justice and Security. These bodies had specifically chosen Solvinity to reduce their dependence on American firms and mitigate CLOUD Act risks. Still, The Register provides several examples of government systems that are "taking concrete steps to regain control over their IT." Austria's Federal Ministry for Economy, Energy and Tourism now has 1,200 employees on the European open-source collaboration platform Nextcloud, leading several other Austrian ministries to also implement Nextcloud. (The Ministry's CISO tells the Register "We can see our input in Nextcloud releases. That is a feeling we never had with Microsoft.") France's Ministry of Economics and Finance recently completed NUBO (which the Register describes as "an OpenStack-based private cloud initiative designed to handle sensitive data and services.") In November the International Criminal Court in The Hague announced it was replacing its Microsoft office software with a European alternative. The German state of Schleswig-Holstein is replacing Microsoft products with open-source alternatives for 30,000 civil servants Thanks to long-time Slashdot reader mspohr for sharing the article. Read more of this story at Slashdot.

  • Is Dark Energy Weakening?
    by EditorDavid on 28/12/2025 at 12:34 pm

    An anonymous reader shared this report from the BBC: There is growing controversy over recent evidence suggesting that a mysterious force known as dark energy might be changing in a way that challenges our current understanding of time and space. An analysis by a South Korean team has hinted that, rather than the Universe continuing to expand, galaxies could be pulled back together by gravity, ending in what astronomers call a "Big Crunch". The scientists involved believe that they may be on the verge of one of the biggest discoveries in astronomy for a generation. Other astronomers have questioned these findings, but these critics have not been able to completely dismiss the South Korean team's assertions... The controversy began in March with unexpected results from an instrument on a telescope in the Arizona desert called the Dark Energy Spectroscopic Instrument (Desi)... The data hinted that acceleration of the galaxies had changed over time, something not in line with the standard picture, according to Prof Ofer Lehav of University College London, who is involved with the Desi project. "Now with this changing dark energy going up and then down, again, we need a new mechanism. And this could be a shake up for the whole of physics," he says. Then in November the Royal Astronomical Society (RAS) published research from a South Korean team that seems to back the view that the weirdness of dark energy is weirder still. Prof Young Wook Lee of Yonsei University in Seoul and his team went back to the kind of supernova data that first revealed dark energy 27 years ago. Instead of treating these stellar explosions as having one standard brightness, they adjusted for the ages of the galaxies they came from and worked out how bright the supernovas really were. This adjustment showed that not only had dark energy changed over time, but, shockingly, that the acceleration was slowing down... If, as Prof Lee's results suggest, the force that is pushing galaxies away from each other — dark energy — is weakening, then one possibility is that it becomes so weak that gravity begins to pull the galaxies back together. Read more of this story at Slashdot.

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