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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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  • Particle Collider Experiment Recreates the Big Bang's Primordial Soup - and Find Unexpected Pattern
    by EditorDavid on 04/10/2026 at 6:15 pm

    "Physicists smashed gold nuclei together at nearly the speed of light and found an unexpected pattern in the particles..." writes Live Science. "If confirmed, that pattern could help reveal how the hot soup of quarks and gluons that filled the universe in the first few microseconds after the Big Bang cooled and condensed into the protons and neutrons that make up ordinary matter today." In every collision, particles are flung out sideways; how hard they are flung, on average, varies slightly from one collision to the next. Physicists expected the size of these variations to change smoothly as they adjusted the collision energy. Instead, the variations dipped, shrinking and then growing again. This dip could be a sign of a long-sought "critical point," a special set of conditions at which nuclear matter changes the way it transforms from one form to another. The signal, detected by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory in New York, is strong enough that it is very unlikely to be a statistical accident. However, the researchers cautioned that the dip is a tantalizing hint, not proof of the long-sought transition. They published their findings Sept. 22 in the journal Physical Review Letters... The team analyzed roughly 1 billion collisions, measuring how hard charged particles were flung sideways out of the fireball, according to the article. The dip "does point to a set of conditions where the behavior of nuclear matter changes, and it gives theorists a new, precise measurement to test their calculations against," study co-author Rutik Manikandhan, told Live Science. Read more of this story at Slashdot.

  • San Francisco's Car Crime Has Plunged. How Much Credit Does Flock Deserve?
    by EditorDavid on 04/10/2026 at 4:34 pm

    Car thefts in San Francisco are down almost 59% for the first eight months of 2026 compared with the same months in 2022, according to analysis of police department statistics by NPR's Planet Money — and car break-ins are down more than 82%. "San Francisco's law enforcement leaders tell us that greater use of surveillance technology — including a controversial, AI-powered license plate camera system made by Flock Safety — has been crucial to this drop in car crime." How much credit does Flock actually deserve...? [In July of 2022, San Francisco District Attorney] Jenkins began taking a more aggressive approach to prosecuting people accused of crimes. Meanwhile, the SFPD beefed up its tactics to fight car thefts and break-ins. In 2023, for example, the police increased patrols in tourist areas known for car break-ins and used "bait cars" to catch and build cases against organized car burglars. But, Jenkins says, "one of the most important factors" behind the drop in crime came when the city introduced new crime-fighting technology. In March 2024, San Francisco voters approved Proposition E, which, among other provisions, made it easier for SFPD to use drones and high-tech surveillance cameras. That same month, the SFPD began installing Flock cameras in strategic locations... In a statement to Planet Money, a spokesperson for the SFPD said, "ALPR has been instrumental in driving down crime in San Francisco. These tools enable our officers to identify crime vehicles with precision, and ALPR is assisting in reducing crimes that were previously very challenging to solve, like auto burglaries." Jenkins described how Flock cameras and drones can work together to catch suspected criminals. In one case the SFPD publicized, the department says Flock cameras spotted a moving vehicle linked to an auto burglary the previous day and alerted officers. Officers deployed a drone, which flew in from above and then began recording suspects in real time as they smashed windows and stole luggage out of a parked SUV. The police then moved in and arrested them. They can do all this, Jenkins says, "without putting innocent people in danger with dangerous police chases." Meanwhile, the surveillance system creates an evidence trail that [Jenkins'] office can use to prosecute suspected criminals... Jenkins also believes high-tech surveillance helps deter crime, although that's harder to prove... The most ambitious study of Flock's system so far is a recent one by University of South Carolina crime researchers Ian Adams and Scott Mourtgos. They analyzed data from 216 law enforcement agencies that introduced Flock cameras, comparing crime trends with places that had not adopted Flock. They found that deploying Flock cameras was associated with an 11% drop in car thefts in the first year. This is only one study, and it has yet to be peer-reviewed. It's also not a randomized controlled trial, the gold standard for finding the actual causal effect of something. Other factors, beyond Flock, could still help explain the decline. That study attempted to control for variables, the article points out — like how San Francisco's decline coincided with a broader drop in crime across American cities as America emerged from the pandemic... But the article also notes another worry shared by "countless citizens" and political leaders. Are these systems handing too much power to law enforcement to "invade our privacy, trace our whereabouts, and stomp on our civil liberties." Read more of this story at Slashdot.

  • FSF Sponsors 'GNU Boot', a Libre, Ethical Replacement for Nonfree BIOS Or UEFI
    by EditorDavid on 04/10/2026 at 3:34 pm

    "Free your BIOS today!" urges the web page for GNU Boot, calling it "a 100% free software project aimed at replacing the nonfree boot software (like BIOS or UEFI) of computers with free boot software. GNU Boot is only a distribution: it reuses existing software projects like Coreboot, GRUB, SeaBIOS, etc. So it's not very different from 100% free GNU/Linux distributions like Trisquel or Guix. Last month the Free Software Foundation announced they'd fiscally sponsor the project: "The BIOS is a delicate but essential part of software freedom for computing today," said Zoë Kooyman, executive director of the FSF. "GNU Boot aims to make sure that we can continue using our computers in freedom. With the way it builds on the work of others to replace UEFI, we know it can remain firm in the free software philosophy and stay vital to digital autonomy and user freedom." Free boot firmware, such as GNU Boot, is responsible for loading the computer's operating system. The work done by GNU Boot contributors has similarities to work done by GNU/Linux distributions: they package software like Coreboot or GNU GRUB, contribute to the upstream repositories of these projects, and assist them with documentation, among other tasks... When asked about their project joining the FSF's fiscal sponsorship program, co-maintainer Adrien Bourmault stated: "Making this decision with the FSF allows us to focus more on what we do best: writing and debugging code that keeps our machines fully free." Projects whose scope and purpose align with the FSF's mission and further mission-related activities can become fiscally sponsored by joining the FSF's Working Together for Free Software Fund. Read more of this story at Slashdot.

  • US Bank Regulator Sued Over Crypto Firm Charters by Community Bank Advocates
    by EditorDavid on 04/10/2026 at 2:34 pm

    A U.S. banking group just sued the government agency that issues America's federal bank charters, reports CoinDesk, "accusing it of exceeding its legal powers in granting national trust-bank status to crypto firms." The agency's move "creates a gaping hole in financial regulation," according to the lawsuit by The Independent Community Bankers of America, one of America's largest banking advocacy organizations. It argues the move will "perversely allow entities engaged in highly risky cryptocurrency and digital assets activities to enter the banking system under lightly regulated national charters" which actually preempt many state regulations, including consumer protection laws. But the move would also "place community banks at a severe competitive disadvantage," the lawsuit argues, "by allowing the national trust banks to offer many of the same services as community banks without complying with the same costly banking laws and regulations that apply to the community banks." This competitive advantage could "siphon deposits out of community banks and into deposit alternatives like cryptocurrency," which they describe as "highly volatile, prone to market crashes, cybercrime, and fraud" and lacking protections like deposit insurance. They also warn that America's Office of the Comptroller of the Currency "has not managed an uninsured bank receivership in nearly one hundred years. But failures of risky uninsured national trust banks could spread instability throughout the nation's financial system, including by spreading contagion risks to other traditional banks like community banks." CoinDesk reports: [The Independent Community Bankers of America] also played a significant role in pushing back against the Digital Asset Market Clarity Act that failed to advance in the U.S. Senate last month — in part due to the bankers' objections that its stablecoin provisions didn't protect them against direct competition with the deposit accounts that are core to their businesses. Now, the group is targeting the trust charters crypto firms are pursuing as an entry point into the U.S. banking and payments system. "Congress did not create the national trust charter as a side door into the banking system for crypto firms seeking the credibility of a federal bank charter," ICBA President and CEO Rebeca Romero Rainey said in a statement.. Read more of this story at Slashdot.

  • Long-Time Slashdot Reader Announces New Open Source Web Browser 'Northstar'
    by EditorDavid on 04/10/2026 at 11:21 am

    Long-time Slashdot reader Andreas(R) announces Northstar, a "minimalist" web browser written entirely from scratch in C — now available in version 1.0.11: One window, one page, one process — about 160,000 lines of original C, small enough for one person to read and audit end-to-end. It carries no upstream browser engine: no Gecko, no WebKit, no Blink. It is free software under the GNU General Public License, version 3 or later, and it runs on Linux, macOS and Windows... Compliance is not inherited from an upstream engine; it is measured, section by section, against the specification text... Private by construction. No telemetry, no update pings, and no AI assistant or AI-style web APIs. Safe browsing checks a top-level navigation's host against a local SHA-256 blocklist before it is fetched — the check never leaves your machine. Cookies, storage and the cache are partitioned by origin. It's logo reminds me of the old Netscape logo. (And I love the "Best viewed in..." GIF at the upper-right of its web site.) Read more of this story at Slashdot.

  • Three EU Officials Not Sold on Europe's Homegrown Alternative to Microsoft Teams
    by EditorDavid on 04/10/2026 at 7:21 am

    Politico EU reports: The European Commission has rolled out an alternative to Microsoft Teams — but officials using it aren't impressed, with one describing the tool as "absolute shit." The Commission introduced Element Pro over the summer as a "sovereign back-up to Teams," according to an internal staff memo seen by POLITICO. The platform is intended to provide a fallback for Commission communications if U.S.-based Teams becomes unavailable.... But three officials have questioned why the Commission needs the new system — and whether it works well enough to serve as a genuine backup. "I don't understand the added value here," one official wrote on an internal staff message board, seen by POLITICO. Another described the tool as "absolute shit." A third official said that, judging matters on how well Element Pro works compared to Teams, the U.S. would "instantly win the war" if it ever decided to switch off its technology... The Commission hosts the Element system on its own infrastructure rather than relying on Microsoft's cloud. That gives the institution greater control over its communications data and systems... Element is a U.K. company whose software is used by governments and public-sector organizations in Europe... Element CEO Matthew Hodgson told POLITICO in a call using Element software that the Commission is still trialing it. "Obviously there are going to be some teething issues," he said, adding there will always be "cognitive dissonance" when switching to a new app, if only because the "buttons" are in a different place. He noted that the United Nations and NATO also use Element Pro. The article adds that earlier this year, France announced millions of civil servants will switch to home-grown alternatives to American video-conferencing tools including Microsoft Teams and Zoom by 2027, while Austria's military also replaced Microsoft Office with the German-made LibreOffice last year. Read more of this story at Slashdot.

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