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A Nice Little Cryptography Primer

By itss | 28/06/2021
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Pun Intended.

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  • Satellite Captures the First Detailed Look At a Massive Tsunami
    by BeauHD on 05/12/2025 at 10:10 am

    NASA and CNES's SWOT satellite captured the first high-resolution, wide-swath image of a major tsunami in the open ocean after the July 2025 Kuril-Kamchatka quake. "Instead of a single neat crest racing across the basin, the image revealed a complicated, braided pattern of energy dispersing and scattering over hundreds of miles," reports Earth.com. "These are details that traditional instruments almost never resolve. They suggest the physics we use to forecast tsunami hazards -- especially the assumption that the largest ocean-crossing waves travel as largely "non-dispersive" packets -- need a revision." From the report: Three takeaways emerge. First, high-resolution satellite altimetry can see the internal structure of a tsunami in mid-ocean, not just its presence. Second, researchers now argue that dispersion -- often downplayed for great events -- may shape how energy spreads into leading and trailing waves, which could alter run-up timing and the force on harbor structures. Third, combining satellite swaths, DART time series, seismic records, and geodetic deformation gives a more faithful picture of the source and its evolution along strike. For tsunami modelers and hazard planners, the message is equal parts caution and opportunity. The physics now has to catch up with the complexity that SWOT has revealed, and planners need forecasting systems that can merge every available data stream. The waves won't get any simpler -- but our predictions can get a lot sharper. The findings have been published in the journal The Seismic Record. Read more of this story at Slashdot.

  • Sugars, 'Gum,' Stardust Found In NASA's Asteroid Bennu Samples
    by BeauHD on 05/12/2025 at 7:07 am

    NASA's OSIRIS-REx samples from asteroid Bennu have revealed bio-essential sugars, a never-before-seen "space gum" polymer, and unusually high levels of supernova-origin dust. The findings bolster the RNA-world hypothesis, suggest complex organics formed early on Bennu's parent body, and show preserved presolar grains that escaped alteration for billions of years. "All five nucleobases used to construct both DNA and RNA, along with phosphates, have already been found in the Bennu samples brought to Earth by OSIRIS-REx," said lead scientist Yoshihiro Furukawa of Tohoku University. "The new discovery of ribose means that all of the components to form the molecule RNA are present in Bennu." The findings have been published in three new papers by the journals Nature Geosciences and Nature Astronomy. NASA also published a video on YouTube detailing the discovery. Read more of this story at Slashdot.

  • Republicans Drop Trump-Ordered Block On State AI Laws From Defense Bill
    by BeauHD on 05/12/2025 at 3:33 am

    An anonymous reader quotes a report from Ars Technica: A Donald Trump-backed push has failed to wedge a federal measure that would block states from passing AI laws for a decade into the National Defense Authorization Act (NDAA). House Majority Leader Steve Scalise (R-La.) told reporters Tuesday that a sect of Republicans is now "looking at other places" to potentially pass the measure. Other Republicans opposed including the AI preemption in the defense bill, The Hill reported, joining critics who see value in allowing states to quickly regulate AI risks as they arise. For months, Trump has pressured the Republican-led Congress to block state AI laws that the president claims could bog down innovation as AI firms waste time and resources complying with a patchwork of state laws. But Republicans have continually failed to unite behind Trump's command, first voting against including a similar measure in the "Big Beautiful" budget bill and then this week failing to negotiate a solution to pass the NDAA measure. [...] "We MUST have one Federal Standard instead of a patchwork of 50 State Regulatory Regimes," Trump wrote on Truth Social last month. "If we don't, then China will easily catch us in the AI race. Put it in the NDAA, or pass a separate Bill, and nobody will ever be able to compete with America." If Congress bombs the assignment to find another way to pass the measure, Trump will likely release an executive order to enforce the policy. Republicans in Congress had dissuaded Trump from releasing a draft of that order, requesting time to find legislation where they believed an AI moratorium could pass. "The controversial proposal had faced backlash from a nationwide, bipartisan coalition of state lawmakers, parents, faith leaders, unions, whistleblowers, and other public advocates," the NDAA, a bipartisan group that lobbies for AI safety laws, said in a press release. This "widespread and powerful" movement "clapped back" at Republicans' latest "rushed attempt to sneak preemption through Congress," Brad Carson, ARI's president, said, because "Americans want safeguards that protect kids, workers, and families, not a rules-free zone for Big Tech." Read more of this story at Slashdot.

  • RoboCop Statue Rises In Detroit
    by BeauHD on 05/12/2025 at 2:02 am

    alternative_right quotes a report from the Guardian: The statue looms and glints at more than 11 feet tall and weighing 3,500 pounds, looking out at the city with, how to put it ... a characteristically stern expression? Despite its daunting appearance and history as a crimefighter of last resort, the giant new bronze figure of the movie character RoboCop is being seen as a symbol of hope, drawing fans and eliciting selfie mania since it began standing guard over Detroit on Wednesday afternoon. It has been 15 years in the making. Even in a snowstorm in the dark, people were driving by to see it, said Jim Toscano, co-owner of the Free Age film production company, where the statue now stands firmly bolted down near the sidewalk. RoboCop hit theaters in 1987, portraying a near-future Detroit as crime-ridden and poorly protected by a beleaguered and outgunned police force, until actor Peter Weller appeared as a nearly invincible cyborg, apparently created by a nefarious corporation bent on privatizing policing. A grassroots campaign to build a RoboCop statue in Detroit began in 2010, eventually raising over $67,000 on Kickstarter and resulting in a completed sculpture in 2017. However, hosting setbacks caused it to get stuck, "stored away from public view," reports the Guardian. The project finally found a home after business owner Mike Toscano agreed to display it in their new open-air product market, calling it "too unique and too cool not to do." Read more of this story at Slashdot.

  • US Probes Reports Waymo Self-Driving Cars Illegally Passed School Buses 19 Times
    by BeauHD on 05/12/2025 at 1:01 am

    U.S. regulators are pressing Waymo for answers after Texas officials reported 19 instances of its self-driving cars illegally passing stopped school buses, including cases that occurred after Waymo claimed to have deployed a software fix. Longtime Slashdot reader BrendaEM shares the report from Reuters: In a November 20 letter posted by NHTSA, the Austin Independent School District said five incidents occurred in November after Waymo said it had made software updates to resolve the issue and asked the company to halt operations around schools during pick-up and drop-off times until it could ensure the vehicles would not violate the law. "We cannot allow Waymo to continue endangering our students while it attempts to implement a fix," a lawyer for the school district wrote, citing one incident involving a Waymo that was "recorded driving past a stopped school bus only moments after a student crossed in front of the vehicle, and while the student was still in the road." The letter prompted NHTSA to ask Waymo on November 24 if it would comply with the request to cease self-driving operations during student pick-up and drop-off times, adding: "Was an appropriate software fix implemented or developed to mitigate this concern? And if so, does Waymo plan to file a recall for the fix?" The school district told Reuters on Thursday that Waymo refuses to halt operations around schools and said another incident involving a self-driving car and an actively loading school bus occurred on December 1, which "indicates that those programming changes did not resolve the issue or our concerns." In a statement, Waymo did not answer why it had refused to halt operations around Austin schools or answer if it would issue a recall. "We're deeply invested in safe interaction with school buses. We swiftly implemented software updates to address this and will continue to rapidly improve," Waymo said. NHTSA said in a letter to Waymo on Wednesday that it was demanding answers to a series of questions by January 20 about incidents involving school buses and details of software updates to address safety concerns. Read more of this story at Slashdot.

  • Microsoft Faces New Complaint For Unlawfully Processing Data On Behalf of Israeli Military
    by BeauHD on 05/12/2025 at 12:00 am

    Ancient Slashdot user Alain Williams shares a report from Al Jazeera: The Irish Council for Civil Liberties (ICCL) has announced it filed a complaint against Microsoft, accusing the global tech giant of unlawfully processing data on behalf of the Israeli military and facilitating the killings of Palestinian civilians in Gaza. In the complaint, the council asked the Data Protection Commission -- the European Union's lead data regulator for the company -- to "urgently investigate" Microsoft Ireland's processing. "Microsoft's technology has put millions of Palestinians in danger. These are not abstract data-protection failures -- they are violations that have enabled real-world violence," Joe O'Brien, ICCL's executive director, said in a statement. "When EU infrastructure is used to enable surveillance and targeting, the Irish Data Protection Commission must step in -- and it must use its full powers to hold Microsoft to account." After months of complaints from rights groups and Microsoft whistleblowers, the company said in September it cancelled some services to the Israeli military over concerns that it was violating Microsoft's terms of service by using cloud computing software to spy on millions of Palestinians. Read more of this story at Slashdot.

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