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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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  • FCC Approves Reflect Orbital's Space Mirror Satellite That Astronomers Hate
    by BeauHD on 11/07/2026 at 11:00 am

    The FCC has approved (PDF) Reflect Orbital's Earendil-1 test satellite, which will use a 60-by-60-foot mirror to reflect sunlight back to Earth after dark. "The reflected light from the satellite is supposed to span an area about 3 miles wide on the ground," reports PCMag. It comes despite objections from astronomers and environmental groups who are concerned that the satellites will unleash intrusive light pollution. From the report: The approval is only for one satellite, dubbed Earendil-1, which is meant to test Reflect Orbital's technology for shining sunlight back to Earth. The satellite will boast a steerable thin-film reflector measuring about 60 feet by 60 feet, with the goal of powering solar farms at night or illuminating disaster-struck areas after dark to help rescue teams. Reflect Orbital envisions operating over 50,000 satellites by 2035, effectively surrounding the Earth with a fleet of mirrors. The proposal has faced stiff pushback from environmental groups and astronomers who are concerned that the satellites will unleash intrusive light pollution. The opposition has been so strong that the FCC received over 1,800 public comments on the application, many of them objecting to Reflect Orbital's plan for Earendil-1. [...] [T]he FCC approved the satellite, noting the grant is only "for a single demonstration satellite" to test an innovative technology that could advance American leadership in space. "The Communications Act states that it is the policy of the United States to 'encourage the provision of new technologies and services to the public,' and Reflect Orbital's demonstration satellite is an example of a potentially groundbreaking technology that the Commission has found is in the public interest to support," the order says. But on the most controversial aspect of the satellite, the FCC said the concerns around Reflect Orbital's solar reflector are "unrelated to the Commission's role in authorizing use of radiofrequency spectrum, and even if the Commission had authority to review and condition these operations (which it does not), these harms are unlikely to occur. In addition, the commission said that U.S. courts have blocked the FCC from using "a generalized public interest requirement beyond its statutory authority in regulating communications. Accordingly, the operations of a solar reflector in space would not be reviewed as part of the Bureau's public interest analysis." The regulator also noted that conducting an environmental review for the satellite went beyond its authority. Even if the FCC did have the power, the commission emphasized that the grant is for a single satellite, not 50,000. "The majority of these comments focus on a hypothetical plan to deploy tens of thousands of satellites, and those who argue the single satellite will harm the human environment do not demonstrate with specificity the potential harm will be caused by the single satellite, but rather rely on the same studies as the commenters objecting to a larger constellation," the FCC adds. Read more of this story at Slashdot.

  • China Lands Rocket During an Orbital Launch For First Time
    by BeauHD on 11/07/2026 at 7:00 am

    China successfully recovered an orbital rocket booster for the first time, landing the Long March 10B's first stage into a net-equipped sea platform after its maiden launch. "This mission marks my country's first successful controlled recovery of a launch vehicle and the world's first network-based recovery of a launch vehicle," the China Aerospace Science and Technology Corporation (CASC) announced via social media shortly after the launch. (Translation by Google.) "It signifies a historic breakthrough for my country in the field of reusable rocket technology and will lay a solid foundation for accelerating the improvement of my country's space access capabilities." Space.com reports: The Long March 10B is a two-stage rocket that stands about 207 feet (63 meters) tall, according to the state-owned CASC, the main contractor for China's space program. The vehicle's first stage burns kerosene and liquid oxygen (LOX) propellants, whereas the second stage uses LOX and liquid methane. In reusable mode, the Long March 10B can loft about 16 tons of payload to low Earth orbit. And the rocket flew with a payload on its debut liftoff -- a satellite that successfully reached "its predetermined orbit," according to the CASC update. That post did not provide any details about the spacecraft or its orbit. It did give a brief rundown of the first-stage recovery, however. "Approximately 6 minutes after the first and second stages separated, the first stage returned vertically and was successfully recovered at a sea-based recovery platform using a net system," CASC officials wrote, noting that launch occurred from the Hainan Commercial Space Launch Site on Friday at 12:15 a.m. EDT (0415 GMT; 12:15 p.m. Beijing time.) "The launch and first-stage recovery missions were a complete success." Read more of this story at Slashdot.

  • Apple Sues OpenAI, Accusing It of Stealing Company Secrets
    by BeauHD on 11/07/2026 at 3:30 am

    An anonymous reader quotes a report from The New York Times: Apple on Friday accused OpenAI of stealing secrets about products still in development, setting up a legal face-off between two of the world's biggest tech companies. In a lawsuit filed in U.S. District Court for the Northern District of California, the consumer tech giant said that OpenAI, a leader in artificial intelligence that has a new hardware business, had asked job candidates from Apple to share details about secret projects and to bring device components and prototypes to their interviews. Apple also accused an OpenAI employee of downloading internal documents from a laptop owned by the iPhone maker. OpenAI used the confidential information to approach Apple's manufacturing partners, including asking one partner to demonstrate Apple's technique for finishing metal on its devices, the lawsuit says. Apple sent a letter to OpenAI in February to raise concerns that confidential information could be "making its way to OpenAI's business improperly," according to the suit. OpenAI did not respond, Apple said. "OpenAI's nascent hardware business now rests on the shakiest of foundations, rotten to its core by its illegal reliance on misappropriated trade secrets," Apple wrote in its lawsuit. [...] In its lawsuit Friday, Apple accused Tang Tan, OpenAI's chief hardware officer and a former Apple executive, of coaching his hires from Apple on how to evade Apple's security processes for departing employees. Apple accused another former employee, Chang Liu, of using a former colleague's Apple-owned laptop to access and download technical documents while working at OpenAI. Mr. Liu told that Apple employee what information about unannounced products she should study before job interviews, Apple said. Mr. Liu also planned to access internal documents through an Apple-owned laptop that he didn't return when he left the company, according to the lawsuit. OpenAI had misled the manufacturing company it approached to learn about the metal finishing technique to believe it had Apple's permission to view it, according to the lawsuit. Apple is seeking an injunction that would prevent OpenAI from possessing, using or sharing Apple's trade secrets, as well as an order requiring OpenAI to return Apple's intellectual property. Read more of this story at Slashdot.

  • Brown Professor Suspects Majority of His Class Used AI To Cheat
    by BeauHD on 10/07/2026 at 11:00 pm

    Longtime Slashdot reader schwit1 shares a report from Inside Higher Ed: For the first time since he started teaching Welfare Economics and Social Choice Theory nearly two decades ago, Brown University economics professor Roberto Serrano gave his students a take-home midterm this spring. Quite a few students had expressed anxiety about being in a classroom after a gunman killed two students and injured nine in a December mass shooting at Brown, and so "it was appropriate," he said, to allow students to take their exams at home. But by the end of the semester, Serrano regretted the decision. Dozens of students in the class likely used artificial intelligence to cheat and earn perfect or near-perfect scores on their midterm, he said. Serrano in turn made the final exam in-person, which led more than a dozen students to drop the course and even more to fail it. Administrators' response to the widespread cheating event has been "meek," he said, and the incident has raised questions about how universities can -- and should -- respond to AI-enabled cheating at scale. "I am not declaring [the midterm] void for now. I am going to give the class a chance to prove me wrong," he wrote. "That is, if the distribution of the final exam is roughly similar to the distribution of the midterm, I will count the midterm. Otherwise, which is of course what I expect to happen, I will declare the midterm void and reweigh the final accordingly." Serrano heard crickets from his students, but 18 of them subsequently dropped the class. Nine students remained enrolled but did not take the final exam. And Serrano said the results proved him right; three students earned a zero, and the average score on the final was 48.6 percent -- by far a historic low, he said. Previously, the average final exam score had never dropped below 65 percent. Only a few students scored similarly to how they did on the midterm. Read more of this story at Slashdot.

  • Russia Hacks Doorbell Cameras To Spy On NATO Bases
    by BeauHD on 10/07/2026 at 10:00 pm

    Dutch intelligence agencies say Russian hackers have been hijacking unsecured internet-connected cameras, including likely doorbell and security cameras, to spy on NATO military bases and transport routes used to move weapons to Ukraine. "Organisations with IP [internet protocol] cameras on these routes have now been warned so that they could take action," said the AIVD domestic security and MIVD military intelligence agencies. Targeted NATO member states include the Netherlands and Ukraine. The Telegraph reports: While the intelligence agencies did not specify the type of cameras hacked, the doorbell systems are frequently used by people to monitor their property from mobile phones. Hackers then use readily available apps to scan for devices that might be accessible. The Dutch investigation found that many of the cameras were unsecured, and "often have standard passwords, outdated firmware and standard configurations." They said: "When the IP camera is identified, the malicious party can attempt to access the IP camera via the internet. This is often relatively easy, because many IP cameras connected to the internet are insufficiently secure." [...] The practice is now considered easier and cheaper than using drones and satellites to gather intelligence. It also aids operational surprise because most camera owners are blissfully unaware their devices have been penetrated by hackers. Ground-based cameras offer a unique perspective on the terrain, which isn't the case with conventional aerial-based spy kit. Read more of this story at Slashdot.

  • Feds Demand Autonomous Vehicle Companies Stop Interfering With First Responders
    by BeauHD on 10/07/2026 at 9:00 pm

    NHTSA is ordering autonomous vehicle developers to explain by the end of the month how they will stop driverless cars from interfering with police, firefighters, and paramedics. TechCrunch reports: [NHTSA Administrator Jonathan Morrison] noted in the letter (PDF) that the agency has "identified a clear pattern of driverless AVs interfering with law enforcement and other first responders," citing instances in which these vehicles drove into active emergency scenes, blocked the paths of ambulances and firefighters, or failed to recognize and respond to basic safety conditions like flashing lights, flares, smoke, fire, and traffic cones. The agency has demanded that AV developers present their "solutions" to this problem by the end of the month. "Let me be clear: the inability to detect and appropriately respond to such situations represents a functional insufficiency," Morrison's letter reads. "Emergency scenes are not rare or extreme 'edge cases.' As such, NHTSA is today issuing a call to action for AV developers and operators to immediately focus their resources on fixing this issue." The agency doesn't explicitly call out any particular company in the letter; however, the details suggest it is directed at robotaxi operators like Waymo. [...] The agency's letter to AV developers doesn't say what the consequences would be if the request is ignored. Nor does it outline what the acceptable solutions would be. But the agency does imply it would hold companies accountable, just as it does human drivers who impede law enforcement. "Every second matters when law enforcement officers, firefighters, or paramedics are answering a call because lives are on the line," the letter states. "That is why human drivers who impede these operations are subject to fines and even jail time." The agency also noted in a press release accompanying the letter that it's making progress on updating Federal Motor Vehicle Safety Standards (FMVSS) requirements, which govern vehicle design and equipment requirements. These proposed changes could help autonomous vehicle companies like Tesla and Zoox, which are developing vehicles without steering wheels, pedals, or other features required on human-driven cars. The agency has already proposed rules that would eliminate the need for windshield wipers, sun visors, defogging systems, and tire placards. The agency released a new 2026 Regulatory Plan and Unified Agenda last week, outlining its proposals. Read more of this story at Slashdot.

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