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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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  • Hackers Hijack D-Link, Ubiquiti Devices To Resell Your Stolen Bandwidth
    by BeauHD on 16/10/2026 at 11:00 am

    An anonymous reader quotes a report from BleepingComputer: A proxyjacking campaign has impacted devices in 34 countries, monetizing victims' internet connections through a commercial residential proxy network. The operator installed Pawns.app, a legitimate bandwidth-sharing application that lets users earn money by sharing their internet connections, on devices without the owners' consent. Pawns.app account holders are rewarded for allowing traffic from other users to flow through their network, provided it runs on trusted, non-blocking IP addresses. By installing the app on multiple systems, the attacker likely accumulated larger payouts. Threat intelligence company GreyNoise discovered the campaign while investigating suspicious activity at an unnamed organization, and identified at least 143 compromised devices worldwide. According to researchers, the attacker exploited known vulnerabilities in D-Link ShareCenter NAS (CVE-2024-3272 and CVE-2024-3273), Ubiquiti UniFi Video NVR (CVE-2021-44228), and SAP NetWeaver Visual Composer (CVE-2025-31324) to install the Pawns.app software. Hikvision and Dahua DVR/NVR devices were also targeted, though the specific vulnerabilities exploited were not identified. In some cases, the report says the attackers configured SSH key authentication to maintain backup access to the compromised systems. Read more of this story at Slashdot.

  • World's Timekeepers Vote to Eliminate the Leap Second
    by BeauHD on 16/10/2026 at 7:00 am

    Timekeepers have officially voted to eliminate the leap second, allowing Coordinated Universal Time to drift as much as one hour from Earth's rotation before a correction is needed. The change ends decades of occasionally adding or subtracting seconds and replaces it with a hypothetical "leap hour" that likely wouldn't be necessary for hundreds or even thousands of years. Smithsonian Magazine reports: "It's kind of a philosophical discussion, because if a leap hour happens, it won't be for a very, very long time," Christian Bizouard, director of the IERS Earth Orientation Center in France, tells the Guardian's Ian Sample. "What we are doing is pushing back the decision." The move caps off 30 years of debate, as the leap second has been highly controversial in the world of timekeeping. Leap seconds aren't nearly as smooth of a fix as leap years are, and they can cause computer and website issues. Reddit famously crashed when a leap second was added on June 30, 2012. It's "always been a problem," Judah Levine, a former researcher at the NIST's Time and Frequency Division, tells Scientific American's Emma Gometz. Instead of adding the entire second all at once, companies such as Google and Meta add the extra time in smaller segments in a tactic called "smearing," according to the Conversation. It's not a simple task, however, and companies that employ smearing have long lobbied to get rid of the leap second. What's more, with Earth's recent spin acceleration, timekeepers around the world were facing the possibility of the world's first negative leap second, in which a second would be subtracted from UTC. This sparked fears, akin to those surrounding Y2K, that our modern technologies wouldn't be able to handle such a change. "It's never happened before, and therefore the software for that has never been tested," Darryl Veitch, a researcher who leads the Timing Lab at the University of Technology Sydney, tells the Australian Broadcasting Corporation's Ellen Phiddian. But others argued that it wouldn't be much of a problem. The vote means that in the future, UTC will be allowed to diverge from astronomical time more than ever before. Read more of this story at Slashdot.

  • Tesla Reveals SpaceX-Powered 'Flying' Roadster
    by BeauHD on 16/10/2026 at 3:03 am

    Tesla has unveiled a dramatically redesigned Roadster concept capable of performing midair flips, controlled landings, and a claimed 0-60 mph sprint in just 0.81 seconds. CarScoops reports: Tonight, Tesla debuted the new Roadster by driving it up a vertical ramp that then went horizontal. Then, it repeated the feat but drove off of the ramp and used thrusters to flip itself over and make a controlled landing on the ground. After that, it did a barrel roll over the rest of the Tesla lineup and again landed without issue on the ground. Then, it did 0-60 mph in 0.81 seconds according to Tesla. All of that sounds amazing, and indeed, watching it happen was pretty spectacular, but boy do we have a lot to unpack. It's been nearly a decade since Tesla first showed us the Roadster. The company unveiled what it's simply calling the Roadster. Not Roadster 2.0, not CyberRoadster, just Roadster, as if it's a direct successor to the original Tesla. In terms of design, it's quite a bit different from the car we saw in 2017. Rather than be a somewhat curvaceous sports car, it's considerably more angular. If a Cybertruck and a Lamborghini Reventon had a runt of a baby, this would be that car. Still, at this stage, we're still just touching on what we saw and what it looks like. Let's get into the details. Developed in collaboration with SpaceX, the Roadster uses 10 cold-gas thrusters powered by two 600-liter compressed-air tanks to accelerate and maneuver in mid-air. Underbody suction fans reportedly generate up to 2Gs of downforce even while stationary, while an active rear spoiler adjusts aerodynamics in real time. Other features include steer-by-wire, brake-by-wire, and throttle-by-wire technology. Tesla plans three variants: Performance, which requires a $50,000 deposit; Thrust, a $250,000 model capable of sub-one-second acceleration; and Rocket, an invite-only, single-seat version capable of flying. Production isn't expected until 2028, and Tesla has yet to disclose key specifications, including range, horsepower, battery capacity, and motor configuration. A recording of the event can be viewed on X. Read more of this story at Slashdot.

  • Police Seize Robot that Sexually Assaulted Teen Girl
    by BeauHD on 16/10/2026 at 1:00 am

    Slashdot reader alternative_right shares a story that has drawn international attention for being potentially the first documented instance of a robot being used directly in a sexual assault. According to the Associated Press, German police have opened a sexual harassment investigation after a robot allegedly touched a 16-year-old girl's buttocks and made thrusting motions while two young men reportedly filmed and streamed the incident. Investigators seized the robot and the suspects' phones and are trying to determine whether the movements were preprogrammed or controlled in real time. From the report: Cologne police spokesman Christoph Bermel said the two male teenagers have not been charged but are considered suspects, and investigators were examining whether the robot's movements were preprogrammed or controlled in real time. Police were unfamiliar with this type of incident, he said. "We have not been aware of this phenomenon so far," Bermel told The Associated Press, saying it was "new territory for us." [...] The robot, said to be 120 centimeters (about 3 ft 11 inches) tall, was dressed in a white tank top, black sweatpants and wearing a gold chain and sunglasses. It also had what appears to be a fake mustache. Videos circulated on the internet show two young men escorting the robot toward a group of women, bumping into one and hugging others, on a lively nighttime street. Read more of this story at Slashdot.

  • Ubuntu 26.10 Released
    by BeauHD on 15/10/2026 at 11:00 pm

    prisoninmate shares a report from 9to5Linux: Ubuntu 26.10 (Stonking Stingray) has been released today, and it is now available for download for those eager to update their Ubuntu systems to a newer release. Powered by the upcoming Linux 7.3 kernel series, Ubuntu 26.10 ships with the latest GNOME 51 desktop environment, TPM-backed full disk encryption (FDE) support on computers without a hardware root of trust, updated Settings to show whether a computer is certified for Ubuntu, and 100% Rust coreutils. There are several App Center enhancements in Ubuntu 26.10, such as a unified app-details view for Snap and Debian packages, a dedicated Drivers page where you can review the available graphics drivers, including NVIDIA driver branches, and support for installing codecs for one-time playback when a media file uses a codec that's not installed.' Other additions include an optional, locally processed AI-powered speech-to-text tool called Myna, system-wide controls for disabling Ubuntu Insights data collection, and better integration with Microsoft Entra ID. Also worth mentioning are the security and software updates that will be available for nine months, through July 2027. Read more of this story at Slashdot.

  • IMF Warns of the Real AI Threat: Debt
    by BeauHD on 15/10/2026 at 10:00 pm

    "Along with the dangers of continuing cyberattacks, the International Monetary Fund (IMF) reports that the threat of an AI market crash is putting the global markets at risk," writes Slashdot reader databasecowgirl, citing the IMF's latest semiannual Global Financial Stability Report. Here's a summary: Three salient risks could trigger a sharp tightening of financial conditions and market turmoil. Weaker or less durable investment and profitability in artificial intelligence could lead to a correction in AI-related asset prices, amplified by rising leverage and concentrated exposures. Resurgent inflation or fiscal concerns could drive a sharp rise in sovereign bond yields, with potentially broad repercussions across financial markets. Meanwhile, increasingly sophisticated cyber threats pose growing risks as finance becomes more digital and interconnected. Underlying financial vulnerabilities could amplify these risks and turn market stress into systemic events. Although the global banking system remains broadly resilient, pockets of weaker banks persist. Liquidity mismatches among insurers and pension funds have increased, while rising leverage and contingent liquidity risks in private credit could amplify stress. While hedge funds support market functioning in calm times, their use of leverage and exposure to crowded trades could exacerbate market stress too and create spillovers to prime brokers. Some emerging markets have seen policy buffers erode, and frontier economies have increasingly relied on less transparent forms of financing. Finally, although markets for tokenized assets remain small and could offer efficiency gains in several areas, they can create new channels for the buildup of leverage and mismatches in liquidity and maturity, in addition to elevating risks related to technology and infrastructure. These vulnerabilities underscore the need for policies that strengthen resilience, enhance transparency, contain excessive leverage, and improve preparedness for future shocks. The full report can be found here (PDF). Read more of this story at Slashdot.

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