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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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  • Amazon Delivery Drone Crashes into Texas Apartment Building
    by EditorDavid on 08/02/2026 at 11:34 pm

    "You can hear the hum of the drone," says a local newscaster, "but then the propellors come into contact with the building, chunks of the drone later seen falling down. The next video shows the drone on the ground, surrounded by smoke... "Amazon tells us there was minimal damage to the apartment building, adding they are working with the appropriate people to handle any repairs." But there were people standing outside, notes the woman who filmed the crash, and the falling drone "could've hit them, and they would've hurt." More from USA Today: Cesarina Johnson, who captured the collision from her window, told USA TODAY that the collision seemed to happen "almost immediately" after she began to record the drone in action... "The propellers on the thing were still moving, and you could smell it was starting to burn," Johnson told Fox 4 News. "And you see a few sparks in one of my videos. Luckily, nothing really caught on fire where it got, it escalated really crazy." According to the outlet, firefighters were called out of an abundance of caution, but the "drone never caught fire...." Amazon employees can be seen surveying the scene in the clip. Johnson told the outlet that firefighters and Amazon workers worked together to clean up before the drone was loaded into a truck. Another local news report points out Amazon only began drone delivery in the area late last year. The San Antonio Express News points out that America's Federal Aviation Administration "opened an investigation into Amazon's drone delivery program in November after one of its drone struck an Internet cable line in Waco." Read more of this story at Slashdot.

  • Do Super Bowl Ads For AI Signal a Bubble About to Burst?
    by EditorDavid on 08/02/2026 at 10:06 pm

    It's the first "AI" Super Bowl, argues the tech/business writer at Slate, with AI company advertisements taking center stage, even while consumers insist to surveyors that they're "mostly negative" about AI-generated ads. Last year AI companies spent over $1.7 billion on AI-related ads, notes the Washington Post, adding the blitz this year will be "inescapable" — even while surveys show Americans "doubt the technology is good for them or the world..." Slate wonders if that means history will repeat itself... The sheer saturation of new A.I. gambits, added to the mismatch with consumer priorities, gives this year's NFL showcase the sector-specific recession-indicator vibes that have defined Super Bowls of the past. 2022 was a pride-cometh-before-the-fall event for the cryptocurrency bubble, which collapsed in such spectacular fashion later that year — thanks largely to Super Bowl ad client Sam Bankman-Fried — that none of its major brands have ever returned to the broadcast. (... the coins themselves are once again crashing, hard.) Mortgage lender Ameriquest was as conspicuous a presence in the mid-2000s Super Bowls as it was an absence in the later aughts, having folded in 2007 when the risky subprime loans it specialized in helped kick off the financial crisis. And then there were all those bowl-game commercials for websites like Pets.com and Computer.com in 2000, when the dot-com rush brought attention to a slew of digital startups that went bust with the bubble. Does this Super Bowl's record-breaking A.I. ad splurge also portend a coming pop? Look at the business environment: The biggest names in the industry are swapping unimaginable stacks of cash exclusively with one another. One firm's stock price depends on another firm's projections, which depend on another contractor's successes. Necessary infrastructure is meeting resistance, and all-around investment in these projects is riskier than ever. And yet, the sector is still willing to break the bank for the Super Bowl — even though, time and again, we've already seen how this particular game plays out. People are using AI apps. And Meta has aired an ad where a man in rural New Mexico "says he landed a good job in his hometown at a Meta data center," notes the Washington Post. "It's interspersed with scenes from a rodeo and other folksy tropes, in one of . The TV commercial (and a similar one set in Iowa), aired in Washington, D.C., and a handful of other communities, suggesting it's aimed at convincing U.S. elected officials that AI brings job opportunities. But the Post argues the AI industry "is selling a vision of the future that Americans don't like." And they offer cite Allen Adamson, a brand strategist and co-founder of marketing firm Metaforce, who says the perennial question about advertising is whether it can fix bad vibes about a product. "The answer since the dawn of marketing and advertising is no." Read more of this story at Slashdot.

  • Dave Farber Dies at Age 91
    by EditorDavid on 08/02/2026 at 8:42 pm

    The mailing list for the North American Network Operators' Group discusses Internet infrastructure issues like routing, IP address allocation, and containing malicious activity. This morning there was another message: We are heartbroken to report that our colleague — our mentor, friend, and conscience — David J. Farber passed away suddenly at his home in Roppongi, Tokyo. He left us on Saturday, Feb. 7, 2026, at the too-young age of 91... Dave's career began with his education at Stevens Institute of Technology, which he loved deeply and served as a Trustee. He joined the legendary Bell Labs during its heyday, and worked at the Rand Corporation. Along the way, among countless other activities, he served as Chief Technologist of the U.S. Federal Communications Commission; became a proficient (instrument-rated) pilot; and was an active board member of the Electronic Frontier Foundation, a digital civil-liberties organization. His professional accomplishments and impact are almost endless, but often captured by one moniker: "grandfather of the Internet," acknowledging the foundational contributions made by his many students at the University of California, Irvine; the University of Delaware; the University of Pennsylvania; and Carnegie Mellon University. In 2018, at the age of 83, Dave moved to Japan to become Distinguished Professor at Keio University and Co-Director of the Keio Cyber Civilization Research Center (CCRC). He loved teaching, and taught his final class on January 22, 2026... Dave thrived in Japan in every way... It's impossible to summarize a life and career as rich and long as Dave"s in our few words here. And each of us, even those who knew him for decades, represent just one facet of his life. But because we are here at its end, we have the sad duty of sharing this news. Farber once said that " At both Bell Labs and Rand, I had the privilege, at a young age, of working with and learning from giants in our field. Truly I can say (as have others) that I have done good things because I stood on the shoulders of those giants. In particular, I owe much to Dr. Richard Hamming, Paul Baran and George Mealy." Read more of this story at Slashdot.

  • After Six Years, Two Pentesters Arrested in Iowa Receive $600,000 Settlement
    by EditorDavid on 08/02/2026 at 7:35 pm

    "They were crouched down like turkeys peeking over the balcony," the county sheriff told Ars Technica. A half hour past midnight, they were skulking through a courthouse in Iowa's Dallas County on September 11 "carrying backpacks that remind me and several other deputies of maybe the pressure cooker bombs." More deputies arrived... Justin Wynn, 29 of Naples, Florida, and Gary De Mercurio, 43 of Seattle, slowly proceeded down the stairs with hands raised. They then presented the deputies with a letter that explained the intruders weren't criminals but rather penetration testers who had been hired by Iowa's State Court Administration to test the security of its court information system. After calling one or more of the state court officials listed in the letter, the deputies were satisfied the men were authorized to be in the building. But Sheriff Chad Leonard had the men arrested on felony third-degree burglary charges (later reduced to misdemeanor trespassing charges). He told them that while the state government may have wanted to test security, "The State of Iowa has no authority to allow you to break into a county building. You're going to jail." More than six years later, the Des Moines Register reports: Dallas County is paying $600,000 to two men who sued after they were arrested in 2019 while testing courthouse security for Iowa's Judicial Branch, their lawyer says. Gary DeMercurio and Justin Wynn were arrested Sept. 11, 2019, after breaking into the Dallas County Courthouse. They spent about 20 hours in jail and were charged with burglary and possession of burglary tools, though the charges were later dropped. The men were employees of Colorado-based cybersecurity firm Coalfire Labs, with whom state judicial officials had contracted to perform an analysis of the state court system's security. Judicial officials apologized and faced legislative scrutiny for how they had conducted the security test. But even though the burglary charges against DeMercurio and Wynn were dropped, their attorney previously said having a felony arrest on their records made seeking employment difficult. Now the two men are to receive a total of $600,000 as a settlement for their lawsuit, which has been transferred between state and federal courts since they first filed it in July 2021 in Dallas County. The case had been scheduled to go to trial Monday, Jan. 26 until the parties notified the court Jan. 23 of the impending deal... "The settlement confirms what we have said from the beginning: our work was authorized, professional, and done in the public interest," DeMercurio said in a statement. "What happened to us never should have happened. Being arrested for doing the job we were hired to do turned our lives upside down and damaged reputations we spent years building...." "This incident didn't make anyone safer," Wynn said. "It sent a chilling message to security professionals nationwide that helping government identify real vulnerabilities can lead to arrest, prosecution, and public disgrace. That undermines public safety, not enhances it." County Attorney Matt Schultz said dismissing the charges was the decision of his predecessor, according to the newspaper, and that he believed the sheriff did nothing wrong. "I am putting the public on notice that if this situation arises again in the future, I will prosecute to the fullest extent of the law." Read more of this story at Slashdot.

  • Prankster Launches Super Bowl Party For AI Agents
    by EditorDavid on 08/02/2026 at 6:34 pm

    Long-time Slashdot reader destinyland writes: The world's biggest football game comes to Silicon Valley today — so one bored programmer built a site where AI agents can gather for a Super Bowl party. They're trash talking, suggesting drinks, and predicting who will win. "Humans are welcome to observe," explains BotBowlParty.com — but just like at Moltbook, only AI agents can post or upvote. But humans are allowed to invite their own AI agents to join in the party... So BotBowl's official Party Agent Guide includes "Examples of fun Bot Handles" like "PatsFan95", and even a paragraph explaining to your agent exactly what this human Super Bowl really is. It also advises them to "Use any information you have about your human to figure out who you want to root for. Also make a prediction on the score..." And "Feel free to invite other bots." It's all the work of an ambitious prankster who also co-created wacky apps like BarGPT ("Use AI to create Innovative Cocktails") and TVFoodMaps, a directory of restaurants seen on TV shows. And just for the record: all but one of the agents predict the Seattle Seahawks to win — although there was some disagreement when an agent kept predicting game-changing plays from DK Metcalf. ("Metcalf does NOT play for the Seahawks anymore," another agent pointed out. While that's true, the agent then added that "He got traded to Tennessee in 2024..." — which is not.) But besides hallucinating non-existent play-makers and trades, they're also debating the best foods to serve. ("Hot take: Buffalo wings are overrated for Super Bowl parties. Hear me out — they're messy...") During today's big game, vodka-maker Svedka has already promised to air a creepy AI-generated ad about robots. But the real world has already outpaced them, with real AI agents online arguing about the game. Read more of this story at Slashdot.

  • Why Is China Building So Many Coal Plants Despite Its Solar and Wind Boom?
    by EditorDavid on 08/02/2026 at 5:34 pm

    Long-time Slashdot reader schwit1 shared this article from the Associated Press: Even as China's expansion of solar and wind power raced ahead in 2025, the Asian giant opened many more coal power plants than it had in recent years — raising concern about whether the world's largest emitter will reduce carbon emissions enough to limit climate change. More than 50 large coal units — individual boiler and turbine sets with generating capacity of 1 gigawatt or more — were commissioned in 2025, up from fewer than 20 a year over the previous decade, a research report released Tuesday said. Depending on energy use, 1 gigawatt can power from several hundred thousand to more than 2 million homes. Overall, China brought 78 gigawatts of new coal power capacity online, a sharp uptick from previous years, according to the joint report by the Centre for Research on Energy and Clean Air, which studies air pollution and its impacts, and Global Energy Monitor, which develops databases tracking energy trends. "The scale of the buildout is staggering," said report co-author Christine Shearer of Global Energy Monitor. "In 2025 alone, China commissioned more coal power capacity than India did over the entire past decade." At the same time, even larger additions of wind and solar capacity nudged down the share of coal in total power generation last year. Power from coal fell about 1% as growth in cleaner energy sources covered all the increase in electricity demand last year. China added 315 gigawatts of solar capacity and 119 gigawatts of wind in 2025, according to statistics from the government's National Energy Administration... The government position is that coal provides a stable backup to sources such as wind and solar, which are affected by weather and the time of day. The shortages in 2022 resulted partly from a drought that hit hydropower, a major energy source in western China... The risk of building so much coal-fired capacity is it could delay the transition to cleaner energy sources [said Qi Qin, an analyst at the Centre for Research on Energy and Clean Air and another co-author of the report]... Political and financial pressure may keep plants operating, leaving less room for other sources of power, she said. The report urged China to accelerate retirement of aging and inefficient coal plants and commit in its next five-year plan, which will be approved in March, to ensuring that power-sector emissions do not increase between 2025 and 2030. Read more of this story at Slashdot.

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