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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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  • Bipartisan 'Uprising' Against Flock Cameras: a Larger Fight Against Big Tech and Surveillance?
    by EditorDavid on 17/08/2026 at 3:04 am

    Politico notes that over 20 local jurisdictions in America "either stopped using Flock cameras or began the process of doing so in July, according to a tracker maintained by DeFlock, an activist group that has been mapping the company. It's the highest amount in a single month since they began tracking in 2021." Some local officials said the public safety promises weren't worth the cost. The cameras "didn't help us with anything. From a utility aspect, they were just kind of not useful," said Eric Couture, a Democratic first selectman in Killingworth, Connecticut, another city that recently canceled its contract with Flock. "I'd say it was a net negative." And their article adds that it's a bipartisan pushback that "runs parallel to sprawling fights over the future of technology in American life, including the rise of increasingly advanced artificial intelligence tools and the construction of massive data centers needed to power them." Salon even argues Flock's cameras "have become a symbol of growing anger over the efforts by technology oligarchs to impose their dystopian fantasies on the country, replacing liberal democracy with a surveillance state... People are sick of tech billionaires trying to control our lives"" By targeting Flock cameras, activists are building momentum for a larger rebellion against the tech industry — and against political leaders who are complicit in their assault on our freedoms. Flock Safety embodies the dishonesty that has been the prevailing theme of tech corporate communications and marketing for at least the past decade. While the cameras are sold to the public as a banal traffic safety measure, they have prompted an outpouring of stories about how they're being used to violate civil liberties and undermine democracy... According to an exhaustive 10-month analysis by Electronic Foundation Frontier, a nonprofit dedicated to defending civil liberties in our digital age, local police were using the cameras to track protesters, such as those at No Kings rallies, who were then put in a national database to be used across all jurisdictions. Despite claims that the cameras only record license plates, the technology-focused outlet 404 Media found that the database is also being used to collect information on individual people whom cops can then search for using descriptions of clothing, race, gender and body type. The Flock uprising, though, is the stirrings of public understanding that none of this inevitable — and we have the right to fight back... Along with protests against data centers, it's a sign that the public is desperate for a way to fight back against not just AI, but also the anti-democratic forces fueling this latest tech wave. Salon's writer also adds that "what stands out about the burgeoning public rebellion against Flock security cameras is just how fun it all is," citing "a national cat-and-mouse game between vandals and cops that is being merrily followed on social media, mostly by people rooting for the vandals." City council meetings in which citizens swarm to protest paying for the cameras are the new must-see TV. In Huntington, West Virginia, a small city in the heart of Appalachia, one man became an internet folk hero when he stood up at a city council meeting and said, "I'm not gonna waste your time; I'm kinda hungry. But one last thing: Every single Flock camera has about 2-3 pounds of copper and about 1-2 grams of gold. Do with that information what you will." He then walked off in triumph. Read more of this story at Slashdot.

  • Anthropic Criticized For Adding Watermarks to Text that Claude Generates - or Processes
    by EditorDavid on 17/08/2026 at 2:04 am

    This week Anthropic announced its Claude chatbot will watermark the text it generates, reports the blog Futurism. "It works by making subtle changes in the AI's word choices across the text it generates, which are supposed to be imperceptible to a human but, in aggregate, form a pattern that is detectable with the tool." Anthropic said it was implementing the watermark system in response to the European Union's landmark AI Act passed in 2024, which requires that AI companies mark content that's been generated or edited by their systems. TechCrunch notes that other companies including Google, Meta, Microsoft, OpenAI, and Synthesia have committed to adhering to the EU's code. But "The news about Claude watermarking kicked off a firestorm on X," reports Forbes, "with users panicking that AI-assisted writing will now bear a kind of permanent 'scarlet letter.'" (Forbes wonders if media companies are normalizing AI "while at the same time stigmatizing the output.") But there's another issue. Anthropic said the watermark indicates Claude processed text, Business Insider points out, "not that it was necessarily the original author. The company said marks can remain after Claude proofreads, translates, summarizes, or otherwise edits content... a watermark shows that Claude processed text, not necessarily that it wrote it." In the days since, "Dozens of people have posted on X since Monday that they had canceled their Claude subscriptions, citing the watermark." Vladislav Rajtmajer, a freelance developer in the Czech Republic, told Business Insider he canceled his Claude Max subscription on Tuesday, citing the watermark as the main reason. He said he uses AI for code reviews and translations, and worried an AI label on code shipped to clients could raise questions about authorship or trigger contract penalties... Richard Echols, an AI consultant in Georgia, also said he canceled his Claude Max subscription on Wednesday and that the watermark was a major factor in his decision. He said he uses Claude to create documentation for businesses and worried the mark could appear when he had written the underlying material himself and used the chatbot only for edits. "Even if you edit your own work that you wrote, they add the watermark anyway," Echols said... Anthropic isn't the only AI lab to use watermarks: Google uses its SynthID technology to watermark AI-generated content, and OpenAI uses SynthID for supported images and audio. Elon Musk's social media platform X also adds a "Made with AI" tag on content it determines to be AI-generated or manipulated. Long-time Slashdot reader kmleon (also a tech consultant and RPG researcher) experienced another issue. He'd built some software using their own custom-built AI tool, only asking Claude to do some testing. "Little did I know that Claude would sometimes decide, since it was involved on the edges... to take credit for all of my work, claiming some parts were either "100%" or "Co-Authored/Created" by Claude.Ai / Claude Code!" I'm sure the good folks at Anthropic will eventually tweak Claude enough to, hopefully, not make these mistakes in the future.... I only became aware of it today, because I recently setup scanners to catch Claude incorrectly watermarking any content it touches for various projects I'm working on. I found that it has (apparently as far back as Sonnet 4.6, but as recently as today, August 14th, 2026) sometimes been mistakenly over-zealous in taking credit for 100% creating or co-authoring docs, code, images, videos, etc. I've only, so far, found about a dozen instances spanning the past year, and most of them appear to have been injected in the last few weeks, so it is not a common issue (yet). On the bright side? Maybe watermarks can help AI stop training on AI-generated text. Although Forbes also reports that Google "announced on Friday that it will now let users remove the visible watermark from AI-generated images, videos and music created with several of its models." Read more of this story at Slashdot.

  • Linux Kernel 7.2 Has Been Officially Released with Many New Features
    by EditorDavid on 17/08/2026 at 12:03 am

    Linux Kernel 7.2 has just been officially released with a slew of new features, reports the blog 9to5Linux. Highlights of Linux 7.2 "include cache-aware load-balancing support, initial HDMI 2.1 FRL support to the AMDGPU driver, support for devres-based management of ACPI notify handlers, initial CRI platform support for the Intel Xe driver, and Rust support for the IBM System/390 (S/390) architecture." Linux kernel 7.2 also introduces a "Fair(er)" GPU scheduler, support for the 'zerocopy' library to Rust support to make zero-cost memory manipulation effortless, new hwcaps for the 2025 dpISA extensions on the AArch64 (ARM64) architecture, and enables large folios by default for the Btrfs file system. It also brings Intel CPU model number support for Panther Lake R processor series, improvements to the kernel's swap subsystem, support for multi-size transparent huge pages (mTHPs) to the khugepaged kernel thread, and support for compressed files to the SMB filesystem. On top of that, Linux 7.2 improves the new NTFS filesystem introduced in Linux kernel 7.1, adds devicetree updates for 64-bit NXP/Freescale and Qualcomm platforms, introduces MPTCP signaling support for IPv6 addresses, adds GRO/GSO support for PPPoE, and brings more SMP load-balancing updates... [T]he TCP authentication option has been implemented, and there are also some Thunderbolt networking improvements. Also worth mentioning is that the KVM subsystem has received support for AMD's "guest-mode execution trap" and Intel's "mode-based execution control" (MBEC) features, the NFS file system's default block size was bumped to 4MB on systems with at least 16GB RAM, and support for the Intel Trusted Domain Extensions (TDX) feature has been added. Thanks to Slashdot reader prisoninmate for bring the news. Read more of this story at Slashdot.

  • China's Moon-landing Plans And Why the US Is So Worried
    by EditorDavid on 16/08/2026 at 11:03 pm

    "We are in a 21st century space race," U.S. Senator Ted Cruz has said. And this week CNN noted a competition that for decades loomed in the background of geopolitics "is now roaring to the forefront," with China "demonstrating rapid advances in space technology" while the U.S. is "ratcheting up rhetoric about a looming battle for control of the cosmos." It's the fact that China plans to build a permanent settlement on the moon by 2040 that has prompted an urgent response from [U.S.] lawmakers... They've declared a new space race, and NASA is pledging to build a lunar outpost of America's own.... Both the United States and China plan to send robotic explorers to the south pole later this year, paving the way for human explorers to follow close behind. The US is relying on the private sector to develop and build low-cost, exploratory robotic landers... Meanwhile, China is aiming to launch its robotic Chang'e-7 mission as soon as this month. The complex endeavor will seek to use four different robotic vehicles — an orbiter, lander, rover and mobile "hopper" — working in tandem to attempt to gather unprecedented data. The effort will include tools to drill for and directly analyze water ice, a feat that the US will only attempt with robotic missions slated for next year at the earliest. "If lunar water ice is successfully located, it could significantly reduce the cost and time required to transport water from Earth, facilitating the establishment of a human base for long-term activities on the moon and enabling further exploration of Mars or deep space," Tang Yuhua, the deputy chief designer of the Chang'e-7 mission, said in a 2025 interview with state media. The oncoming flurry of south-pole-centric activity, with few established international laws to govern the outcomes, is heightening the drama of this rivalry... But with a much more ambitious goal — a future in which people attempt to flourish within permanent settlements rather than just visit the moon — the stakes of this new space race are even higher, according to Clayton Swope, the deputy director of the Aerospace Security Project at the Center for Strategic and International Studies, a bipartisan nonprofit. "The long-term vision will take generations to execute on," Swope said. "But in my mind, it's a scenario where there are people being born, people dying, their families, children growing up in a place that is not Earth — so that looks a lot like a city, more than it looks like an expedition to the south pole." If such a future comes to fruition, Swope added, his hope is that such extraterrestrial colonies would be governed by rules reminiscent of Western ideals and democratic principles. Whether China would be on the same page is an open question. China is already fine-tuning its plans for a lunar settlement, CNN writes: The country envisions the International Lunar Research Station, or ILRS, as a sprawling science-focused facility on the moon's surface that can be operated robotically, "with the prospect of subsequent human presence," according to a government's ILRS website. China could partner with Russia to build a massive nuclear reactor to power the base, though questions remain regarding how the war in Ukraine may impact Russia's ability to deliver... China and Russia were mapping these plans long before the US announced its own intention to build a nuclear reactor on the moon last year and detailed its plans for a lunar settlement spanning hundreds of square miles... Who will write the rules? And how, exactly, will the use of lunar resources be policed on the international stage? Meanwhile, NASA "still does not have a vehicle capable of getting astronauts down to the lunar surface," the article points out: Returning to the moon is not as simple as repeating Apollo. The space agency cannot — and does not wish to — replicate its 20th century lunar-landing success. The supply chains, skilled machinists and factories that built Apollo's rockets, landers and command modules no longer exist. And while the Apollo landings stuck close to the lunar equator, landing near the south pole is substantially more complex and requires more powerful vehicles.... China, meanwhile, has been laser focused on its lunar exploration program since 2004, using its top-down, central planning system to keep resources flowing toward specific goals. Read more of this story at Slashdot.

  • Flock's 'Creepy Cameras' Remain Major Threat to Privacy Despite Small Recent Changes, Warns ACLU
    by EditorDavid on 16/08/2026 at 8:38 pm

    While Flock announced changes for its AI-powered traffic cameras, "Several of the proposed changes Flock is touting are merely retreads of previous ," complains the American Civil Liberties Union. "Flock's latest announcement still appears more focused on addressing a perceived PR problem than the significant harms its products create... [T]his is hardly the step forward Flock wants us to think it is " The ACLU continues to urge that default retention periods be shortened to 48 hours — not one week. And they warn Flock allows longer retention to any police department that asks for it, or when police officers activate "Evidence Mode" (the scope of which is not yet clear): Even if "Evidence Mode's" data retention hold only applies to hits returned on a given search, it would still retain significant amounts of location data on persons and vehicles who law enforcement do not suspect have engaged in any wrongdoing... Flock claims that its changes will provide "more local control," meaning local police can decide what types of offenses other Flock customers can search their data for... This is not new. Flock has attempted this before, and the security measure failed because users were easily able to circumvent the system's requirement that police input the purpose of their search. For example, on June 12, 2025 Flock started claiming its new "Proactive Search Term Tool" would block any "impermissible" searches, such as abortion-related searches in states like Illinois that prohibit sharing reproductive healthcare data. But police officers quickly realized they could just input "investigation" or even "hehehe" as a search reason and it would be approved. Flock later switched from an open text box to a drop-down menu of reasons, but that just offered police a list of acceptable purposes they could choose from, whether it was accurate or not. Until Flock demonstrates they can develop a reliable, workable system to prevent improper searches, this promise of local control provides nothing more than a false sense of security... While providing "Audit Assistance" to all departments makes sense, there is no evidence that the tool works consistently to address what the Washington Post observed is a growing pattern of police officers turning Flock into a personal stalking tool. While dozens of officers have recently been arrested, fired, or otherwise disciplined for misusing Flock for personal reasons, Flock claims these arrests are proof its auditing tool works. However, unless we know the number of officers misusing the system, we cannot conclude if Flock and its auditing tools are catching 95 percent of violators or 5 percent. Flock needs to have its auditing tool analyzed by an independent evaluator to determine its actual effectiveness. Until then, we don't know if the tool is a real security measure or just window dressing. Perhaps the oddest part of Flock's announcement is its claims that "now every search will require" police to input a case code... While claiming that a "search without a reason is a search that shouldn't happen in the first place," Flock's announcement fails to note how easily users have circumvented "search reason" security measures in the past... This leaves the public wondering how making an ineffective voluntary security measure mandatory will improve its functionality. Flock's "nearly $1 billion in venture capitalist funding has locked it into an operational model that seeks to trade our privacy for massive profits," concludes the ACLU's statement, as they promise to continue "The ACLU is fighting alongside communities to cancel local ALPR contracts and push lawmakers to protect our rights from this surveillance nightmare..." Read more of this story at Slashdot.

  • Could a Disc-Free PlayStation Actually Lower Game Prices?
    by EditorDavid on 16/08/2026 at 6:42 pm

    "As Sony soldiers ahead with their plans to end hard copies for new PlayStation games, players are fearing a future which will force them to pay more and own less," writes Kotaku. What will prices do in a world with no physical copies to share or sell? One former Square Enix executive speculates this could actually drive down the price of games: "Digital on the PS store will likely get cheaper," posted Jacob Navok, former Square Enix business strategist. "Current prices are tied to retail. Without physical discs holding digital hostage we'll see a larger spectrum of pricing similar to steam." Navok says that the digital-only landscape will pit major publishers in constant, dynamic competition with each other... "The more the Playstation store becomes digital only, the greater this trend will accelerate," Navok follows up. "You will see more sales and dynamic pricing similar to Steam because publishers will compete among themselves to a greater extent." [O]n the other end newer games are getting increasingly expensive, even on digital platforms. The fact that Grand Theft Auto VI will be a purely digital release has not caused its price point to budge. Read more of this story at Slashdot.

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