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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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  • Is Big Tech's AI Gamble Starting to Look Riskier?
    by EditorDavid on 02/08/2026 at 12:12 am

    The Washington Post looks at giant tech companies "feeding every available dollar into the cash-incinerating maw of AI machines." They warn "Tech superstars that once had oodles of cash left over at the end of each year are now flipping into the red..." [While optimists expect] huge corporate profits and a society-wide boost to wealth and well-being... questions about that AI vision are now growing more urgent: When, if ever, will this payoff arrive? And what will the fallout be for Americans if the titanic investment doesn't quickly deliver? "This AI thing better work out because if it doesn't ... we're going to have a problem," said Torsten Slok, chief economist at investment firm Apollo Global Management. AI costs and doubts are spreading. The U.S. stock market has swooned this summer over fear of the AI bubble going bust... The AI gamble sweeping up American fortunes is led by tech companies splurging on hulking data centers packed with computer chips and equipment needed to develop sophisticated AI models and deliver them to customers. In investor calls in the past week, Google, Microsoft, Meta and Amazon pointed to soaring AI-related sales and business deals. Advertisers are using the technology to tailor marketing pitches and corporations and start-ups are buying access to chatbots and other AI software to boost productivity... But this spending can only continue if AI generates an even larger avalanche of new revenue to pay for it all. Financial results released over the past week show that the AI titans' mammoth costs are largely swamping the sales boost from the technology. At Google, for every dollar of cash its business generated in the past three months, $1.15 went out the door to pay for AI computer chips and equipment, land for AI data centers and other big-ticket purchases. The company is covering the difference partly by borrowing money and selling more of its stock. Next year, five leading AI companies — Google, Amazon, Microsoft, Meta and Oracle — are projected to have negative free cash flow, which measures the cash left over after paying expenses and AI infrastructure costs. The figures, based on investment analyst projections compiled by S&P Global Market Intelligence, show a stunning reversal for what have been some of the world's most cash-generating corporations... The companies remain profitable by standard financial accounting measures that spread out the costs of their AI infrastructure spending over many years... Pessimists see a bet so gargantuan that it cannot possibly pay off. The pessimists are growing louder. The Bank for International Settlements, a typically measured institution in Switzerland that advises government bankers around the world, recently warned there was risk of "economy-wide recessions" if the AI boom falters. That could mean pain for workers and communities across the United States. "I'm not saying AI is going to go away, it's just not clear to me these guys are going to make money on it," said Christopher Wood, global head of equity strategy at investment bank Jefferies who has correctly predictedpast financial bubbles. Read more of this story at Slashdot.

  • 150-Game Discount Bundle Raises $57,000 for Videogame Workers 'Hardship Fund'
    by EditorDavid on 01/08/2026 at 10:42 pm

    "An itch.io game bundle put together by Necrosoft Games and The United Videogame Workers-CWA union is a new way gamers can show their support for developers who have been let go amidst the ongoing video game industry labor crisis," writes Kotaku. Launched Thursday, it's already raised $57,859 from 3,984 contributors. (Average contribution size: $14.52) The bundle is pay-what-you-want with a minimum purchase price of $10, offering DRM-free PC versions of games including A Short Hike, SkateBIRD, and my favorite game in the pack, Arranger: A Role-Puzzling Adventure ... The bundle will be available through August 13. The gaming blog Rock Paper Shotgun shares more details, starting with this quote from the bundle's page on itch.io: "Reports say 33% of the industry lost their jobs in the last two years, and the jobs they could fill are disappearing as CEOs try to replace them with AI. It's hard for companies to adjust to the new shape of the game industry, but even harder for the people they should be employing... To address this in some small way, we have created a bundle with almost 150 games. The proceeds of this bundle will go toward a hardship fund for those experiencing layoffs." Games industry workers currently out of work or under-employed can apply to this fund, which is distributed by the United Videogame Workers, to help out with basic necessities like food and rent. As a note, this is only available to US and Canada-based devs, but there's an FAQ explaining who can apply for the fund. Read more of this story at Slashdot.

  • NASA's Curiosity Mars Rover Discovers a Field of Honeycomb Textures
    by EditorDavid on 01/08/2026 at 9:39 pm

    NASA's Curiosity rover has sent back images of honeycomb-like textures called polygonal fractures, each one about 1.5 to 3 inches (4 to 8 centimeters) across. NASA reports: The mission has spotted small patches of these geometric shapes several times before, but nothing at the scale discovered in Valle Grande. In a 360-degree panorama that the rover captured on June 19 and 20, the 4,930th and 4,931st Martian days, or sols, of the mission, the polygonal shapes spread in all directions for as far as the rover can see... "[T]his sea of polygons took our breath away," said the mission's project scientist, Ashwin Vasavada of NASA's Jet Propulsion Laboratory in Southern California... Some of the polygons that the mission has spotted in the past clearly formed as mud cracks, though a variety of processes can contribute to their honeycomb textures, including cycles of warm and cold temperatures or compression that squeezed water out of the sediment when the surface was buried. These newly discovered polygons are among the many surprises Curiosity has trundled across since landing on Mars 14 years ago, on Aug. 5, 2012. Besides sulfur crystals, shiny meteorites, and other interesting geologic features, the rover has made major discoveries about the ancient Martian environment — most importantly, that it had the water, chemistry, and nutrients to support microbial life. Billions of years ago, lakes and streams dappled the lower foothills of Mount Sharp, a 3-mile-tall (5-kilometer-tall) mountain that Curiosity has been ascending since 2014. The rover has previously uncovered chemistry left over from Mars' watery history, including carbon-based molecules believed to be precursors to RNA and DNA, two nucleic acids that carry genetic information. Scientists have no way of knowing whether these organic molecules were created by biologic or geologic processes — either path is possible — but their discovery reconfirmed that ancient Mars had the right chemistry to support life. Dark, pebble-sized rocks also litter the area, NASA writes in a blog post, saying it's a "still-to-be-resolved question" as to whether they're bits of Mars that "floated" down from higher in the sediment layers, or "were ejected from distant impacts outside of Gale crater, or are meteorites from beyond Mars altogether." Read more of this story at Slashdot.

  • Apple's Stock Drops Nearly 10%. How Will It Respond to Memory Shortage?
    by EditorDavid on 01/08/2026 at 8:15 pm

    Apple's stock "fell just shy of 10% on Friday," reports Yahoo Finance, "after CEO Tim Cook warned about the impact of the global memory shortage on the company's business." During Apple's third quarter earnings call, Cook said the company paid significantly more for memory in the quarter and expects that to further increase in the current period. And while Apple is able to offset some of that price jump, it won't be able to tackle it all... The CEO said that iPhone and Mac sales outpaced Apple's own expectations and that a lack of flexibility in the supply chain is making it more difficult to keep up with demand. Yahoo Finance cited an investment analyst who predicts overall gross margins for Apple's iPhone could drop from 38% to 34.5%. But another analyst sees a scenario where Apple "raises iPhone prices, unit growth will slow, and as unit growth slows, so will user growth, which we think ultimately will slow Services growth." (Still, Yahoo Finance predicts Apple's new leasing program "could help address those concerns.") Apple has another controversial option, according to the blog 9to5Mac: Bloomberg reports that US senators from both sides of the aisle are urging Apple CEO Tim Cook to commit by August 21 to not using memory chips from Chinese suppliers CXMT and YMTC.... Apple is not required to obtain U.S. government approval to purchase chips from the companies, but doing so without the administration's support could expose it to significant political ramifications. Which is why, in an interview with The Wall Street Journal ahead of Apple's recent price hikes, Tim Cook said that "everything needs to be on the table," adding that "we should look at all supply...." More recently, the Journal reported that Apple's use of Chinese memory chips could extend beyond China, with the company seeking the administration's blessing to use components from CXMT and YMTC in products sold elsewhere outside the US. The report also detailed Micron's efforts to persuade the administration to reject Apple's request, arguing that allowing Chinese suppliers into Apple's supply chain could undermine domestic memory production... [Bloomberg's reported that U.S. lawmakers warned] other companies could follow Apple's lead, potentially undermining domestic memory production and planned investments in states such as Indiana, Idaho, New York, and Virginia... [T]he senators sought details about any information Apple has shared with CXMT during the component qualification process, noting that the transfer of controlled technical information to advanced chipmaking facilities in China may require a Commerce Department license. The blog MacRumors notes that Apple has already increased prices for Macs and iPads in June because of surging memory prices. Apple CEO Tim Cook said Thursday "we did it because we're in what I would characterize as a 100-year flood on memory pricing with exponential increases in memory prices." Cook did not comment on whether Apple plans to raise iPhone prices when the iPhone 18 Pro models and first foldable launch this September, but multiple analysts believe prices will go up. Cook said Apple is expecting to pay higher memory costs in the September quarter, though Apple will be able to partially offset it with lower costs on some non-memory components and a stockpile of inventory. Sky News points out that "It was Tim Cook's final earnings appearance before his retirement after 15 years at the helm of the company." Apple, which recently topped Nvidia as the most valuable listed company, has been largely spared the volatility in share price seen by chipmakers and big spenders on artificial intelligence. Apple continues to generate cash without the huge investment spending that its Wall St peers are dealing with "and that showed across most parts of the operation," said Thomas Monteiro, an analyst at Investing.com. Read more of this story at Slashdot.

  • Hamburg Is Replacing a Bridge In One Huge Piece
    by EditorDavid on 01/08/2026 at 6:00 pm

    Long-time Slashdot reader Qbertino writes: The northern German City of Hamburg is currently in the process of replacing one of its bridges in one single gigantic piece. The new replacement weighs 3700 metric tons and was carefully moved into place over a stretch of 500 meters, requiring extreme patience and precision maneuvering. Some places leave only 40 cm of room to neighbouring buildings. Read more of this story at Slashdot.

  • New GitHub, PyPI Policies Hope to Boost Supply Chain Security
    by EditorDavid on 01/08/2026 at 5:00 pm

    "GitHub and the Python Package Index (PyPI) have introduced new policies meant to boost supply chain security," reports SecurityWeek, "by preventing the fast propagation of poisoned package versions and the poisoning of old and long-stable releases." To prevent the fast delivery of malicious code through the immediate fetching of brand-new releases, GitHub has introduced a Dependabot cooldown, where the automation tool waits for at least three days after a release has been published before opening a pull request. "Waiting a few days before adopting a new release gives maintainers, security researchers, and automated scanners time to spot a malicious version and get it pulled before it ever reaches your pull requests," GitHub explains. The three-day cooldown only applies to non-security version bumps, and the behavior can be modified through the configuration option in the dependabot.yml. "Three days as the default balances two goals: it pushes you past the window where most of these attacks live, and it doesn't hold your dependencies back longer than necessary," GitHub notes. And the Python Package Index (PyPI) "now rejects new files being uploaded to releases that are older than 14 days," according to a recernt blog post from the Python Software Foundation's security developer-in-residence Seth Larson: This restriction was put in place to prevent old and long-stable releases from being poisoned in case publishing tokens or workflows of PyPI projects were compromised... The discussion of this behavior began during PEP 740 (Digital Attestations) back in January 2024. The discussion was restarted in March 2026 after the popular packages LiteLLM and Telnyx were compromised. These packages were compromised due to a "mutable reference" in these projects' usage of the Trivy GitHub Action... To quantify how disruptive this change would be to existing workflows, the PyPI database was queried for projects that have published new files to old releases... [O]nly 56 projects of 15,000 had published a [Python] 3.14-compatible wheel more than 14 days after a release was available. This topic was brought to the Packaging Summit at PyCon US 2026 by PyPI Safety & Security Engineer, Mike Fiedler. The rough consensus of the discussion was that the summit attendees thought it was "acceptable to require users to bump to the next version" to support new Python versions. With the data and consensus in hand, Seth moved forward with a patch to reject new files on old releases which was merged July 8th, 2026. Read more of this story at Slashdot.

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