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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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News for nerds

  • Hidden Car Door Handles Are Officially Being Banned In China
    by msmash on 03/02/2026 at 7:01 am

    sinij writes: Automakers have increasingly implemented door handles that retract into the bodywork for aerodynamic reasons, but they are now off limits in China. My issue is with electronic-only door latch mechanism. It should be possible to open the door from both inside and outside the car in case of complete power loss. Read more of this story at Slashdot.

  • SpaceX Acquires xAI in $1.25 Trillion All-Stock Deal
    by msmash on 03/02/2026 at 3:46 am

    Elon Musk's SpaceX has acquired his AI startup xAI in an all-stock deal that values the combined entity at $1.25 trillion, ahead of what would be the largest initial public offering in history. SpaceX pegged its own valuation at $1 trillion -- a markup from the $800 billion it commanded in a December secondary stock sale -- and priced xAI at $250 billion based on a recent $20 billion funding round that valued the two-year-old AI company at $230 billion. SpaceX CFO Bret Johnsen told investors on a call Monday that shares in the combined company would be priced at $527 and that xAI shares would convert into SpaceX stock at a roughly seven-to-one exchange rate. The company is still targeting a June IPO expected to raise as much as $50 billion, surpassing Saudi Aramco's $29 billion listing in 2019. Musk said the least expensive way to do AI computation within two to three years will be in space. "Global electricity demand for AI simply cannot be met with terrestrial solutions, even in the near term, without imposing hardship on communities and the environment," he wrote. SpaceX filed last Friday for permission to launch up to a million satellites into Earth's orbit. xAI merged with Musk's social media platform X last March in a $113 billion deal, and Tesla announced a $2 billion investment in xAI last week. Read more of this story at Slashdot.

  • A Century of Hair Samples Proves Leaded Gas Ban Worked
    by msmash on 03/02/2026 at 2:30 am

    Scientists at the University of Utah have analyzed nearly a century's worth of human hair samples and found that lead concentrations dropped 100-fold after the EPA began cracking down on leaded gasoline and other lead-based products in the 1970s. The findings, published in the Proceedings of the National Academy of Sciences, drew on hair collected from Utah residents -- some preserved in family scrapbooks going back generations. Lead levels peaked between 1916 and 1969 at around 100 parts per million, fell to 10 ppm by 1990, and dropped below 1 ppm by 2024. The decline largely tracks the phase-out of leaded gasoline after President Nixon established the EPA in 1970; before the agency acted, most gasolines contained about 2 grams of lead per gallon, releasing nearly 2 pounds of lead per person into the environment each year. The study arrives amid the Trump administration's broader push to scale back the EPA. Lead regulations have not yet been targeted, but the authors note concerns about loosened enforcement of the 2024 Lead and Copper rule on replacing old lead pipes. Read more of this story at Slashdot.

  • Leica Camera's Owners Weigh $1.2 Billion Sale of Controlling Stake
    by msmash on 03/02/2026 at 12:01 am

    The owners of Leica Camera AG -- Austrian billionaire Andreas Kaufmann and private equity giant Blackstone -- are considering a sale of a controlling stake in the German camera maker in a deal that could value the company at about $1.2 billion, Bloomberg reported, citing people familiar with the matter. HSG, formerly known as Sequoia Capital China, and Altor Equity Partners are among a handful of bidders. The Kaufmann family could re-invest following a transaction. Leica traces its roots roughly 150 years to Ernst Leitz's microscope company and was publicly traded on the Frankfurt stock exchange until the Kaufmann family took it private in 2012. Read more of this story at Slashdot.

  • Feds Skipping Infosec Industry's Biggest Conference This Year
    by msmash on 02/02/2026 at 10:33 pm

    An anonymous reader shares a report: The US Cybersecurity and Infrastructure Security Agency won't attend the annual RSA Conference in March, an agency spokesperson confirmed to The Register. Sessions involving speakers from the FBI and National Security Agency (NSA) have also disappeared from the agenda. "Since the beginning of this administration, CISA has made significant progress in returning to our statutory, core mission and focusing on President Trump's policies for maximum security for all Americans," CISA spokesperson Marci McCarthy told us. "CISA has reviewed and determined that we will not participate in the RSA Conference since we regularly review all stakeholder engagements, to ensure maximum impact and good stewardship of taxpayer dollars." McCarthy declined to comment on whether the decision had anything to do with former CISA director Jen Easterly being named chief executive of RSAC last week. Easterly, who was appointed to lead America's top cyber-defense agency under the Biden administration, joined her predecessor and CISA's first-ever director Chris Krebs in President Trump's line of fire back in July. Read more of this story at Slashdot.

  • Finland To Introduce 'Green Wave' Automated System For Emergency Vehicles
    by msmash on 02/02/2026 at 9:01 pm

    alternative_right writes: Fintraffic's national traffic priority system, which is set to be introduced this summer, will recognize the location of an emergency vehicle and automatically change the lights to green to facilitate its passage. (Why isn't everyone doing this already?) Read more of this story at Slashdot.

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