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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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  • Two-Week Social Media 'Detox' Erases a Decade Age-Related Decline, Study Finds
    by EditorDavid on 11/04/2026 at 4:34 pm

    Critics say social media is engineered to be as addictive as tobacco or gambling, writes the Washington Post — while adding that "the science has been moving in parallel with the court's recognition." A growing body of research links heavy social media use not only to declines in mental health but to measurable cognitive effects — on attention, memory and focus — that in some studies resemble accelerated aging. Science also suggests we have more control than we realize when it comes to reversing this damage, and the solution is surprisingly simple: Take a break... "Digital detoxes" can sound like a fad. But in one of the largest studies to date, published in PNAS Nexus and involving more than 467 participants with an average age of 32, even a short time away produced striking results — effectively erasing a decade of age-related cognitive decline. For 14 days, participants used a commercially available app, Freedom, to block internet access on their phones. They were still allowed calls and text messages, essentially turning a smartphone into a dumb phone. Their time online decreased from 314 minutes to 161 minutes, and by the end of the period the participants had improvements in sustained attention, mental health as well as self-reported well-being. The improvement in sustained attention was about the same magnitude as 10 years of age-related decline, the researchers noted, and the effect of the intervention on depression symptoms was larger than antidepressants and similar to that of cognitive behavioral therapy. But two things were even more mind-blowing... Even those people who cheated and broke the rules after a few days seemed to have positive effects from the break; and in follow-up reports after the two weeks, many people reported the positive effects lingered. "So you don't have to necessarily restrict yourself forever. Even taking a partial digital detox, even for a few days, seems to work," Kushlev said. The article also notes a November study at Harvard published in JAMA Network Open where nearly 400 people 'found that even a short break can make a measurable difference: After just one week of reduced smartphone use, participants reported drops in anxiety (16.1 percent), depression (24.8 percent) and insomnia (14.5 percent)..." "Other experiments point in the same direction — whether decreasing social media use by an hour a day for one week or stepping away from just Facebook and Instagram." Read more of this story at Slashdot.

  • Firefox vs. Chrome: Which Performs Better on a Linux Laptop?
    by EditorDavid on 11/04/2026 at 3:34 pm

    Phoronix staged "a showdown" between Firefox and Chrome, testing them both on an Intel Panther Lake laptop running Ubuntu 26.04. JetStream 3.0 was announced at the end of March as the latest major web browser benchmark. This updated version of JetStream is focused on intensive portions of modern JavaScript and WebAssembly web applications... Google Chrome 147 came in at 1.47x the performance of Mozilla Firefox 149. A very strong showing for Google's web browser and to not much surprise Google engineers have been heavily involved in JetStream 3 as part of its open governance model. Chrome debuts very well on JetStream 3 while it will be interesting to see what optimizations Mozilla engineers pursue in the months ahead... In the recent Speedometer 3.1 benchmark update that is focused on browser responsiveness, Chrome was at 1.24x the performance of Firefox... Firefox picked up wins in the MotionMark and StyleBench browser benchmarks. Google Chrome meanwhile continued to dominate in the JavaScript heavy benchmarks... In some of the WebAssembly benchmarks, there was at least some healthy competition between Firefox and Chrome on Linux. Across the web browser benchmarks, the Core Ultra X7 358H power consumption came in at 11.44 Watts on average for Chrome and 11.74 Watts for Firefox. Quite close. The slight CPU power difference may come down to the CPU usage with Chrome coming in slightly lower at 8.13% on average to 8.35% with Firefox. Chrome also came in at slightly lower memory consumption across all the benchmarks with total memory usage on average at 4.67GB to Firefox at 4.83GB. Read more of this story at Slashdot.

  • The End of 'Star Trek'? Every Single Series Now Cancelled
    by EditorDavid on 11/04/2026 at 2:34 pm

    "Every single Star Trek series has been canceled..." reports ScreenRant. "There is "no Star Trek in production or greenlit for the first time in nearly a decade." While there were five active Star Trek series just a few years ago, Star Trek: Strange New Worlds filmed its fifth and final season in the fall of 2025, and Star Trek: Starfleet Academy "wrapped filming its second and final season at the end of February." (Though ironically, both Star Trek series still have seasons yet to premiere, with two season of Strange New Worlds mean it may continue airing through 2027.) TrekCentral reports that the sets for Star Trek: Starfleet Academy are now being torn down... There will be a local online auction for parts of the set on Friday. Additionally, Star Trek: Strange New Worlds' sets are also being taken down... Star Trek: Starfleet Academy boasted the largest sets ever built for Star Trek. The demolition of Starfleet Academy's stunning sets includes the loss of the multi-level atrium, which had the Starfleet Wall of Heroes, the USS Athena's bridge, and the classrooms. Read more of this story at Slashdot.

  • US Demands Reddit Unmask ICE Critic, Summons Firm To Grand Jury
    by BeauHD on 11/04/2026 at 11:00 am

    An anonymous reader quotes a report from Ars Technica: The Trump administration has stepped up an effort to unmask a Reddit user who criticized Immigration and Customs Enforcement (ICE). After failing to obtain information through a summons issued (PDF) to Reddit, the government reportedly issued a subpoena demanding that Reddit provide the information and appear before a grand jury in Washington, DC. The Intercept described the subpoena today. "According to a subpoena obtained by The Intercept, Reddit has until April 14 to provide a wide range of personal data on one of its users, whom US Immigration and Customs Enforcement agents have been trying unsuccessfully to identify for more than a month," the article said. The legal saga began in US District Court for the Northern District of California. On March 12, the anonymous Reddit user whose information is being sought filed a motion (PDF) to quash a summons seeking a host of information from Reddit. The summons was issued by the Department of Homeland Security and directed Reddit to turn information over to an ICE senior special agent. The summons cited authority under 19 U.S. Code 1509, which is part of the Smoot-Hawley Tariff Act of 1930. The motion to quash said the summons is not authorized by the law, which deals with imports of boats, alcoholic drinks, and animals, among other things. "J. Doe is a US citizen who has not traveled out of the country, is not engaged in any international commerce, has no business concerns outside the United States, and primarily uses their Reddit account to engage in political speech relevant to their local community," said the filing by the Civil Liberties Defense Center (CLDC), which represents the Reddit user. "Yet the government claims the right to obtain Doe's name, telephone number, home address, banking and credit card information, IP addresses, telephone model number(s), and the names of any other accounts associated with their Reddit account. The information sought by the government in no way pertains to customs or importing or exporting merchandise, and is clearly intended to chill free speech." "We should be very, very, very concerned that they've now taken one of these to a grand jury," said David Greene, senior counsel for the Electronic Frontier Foundation. "It's something to be taken very seriously." A Reddit spokesperson told Ars today that "we seek to inform users of any legal process compelling disclosure of their data, as we did in this case, because users should have the agency to protect their own information and are often better positioned to challenge requests that impact them." "We do not voluntarily share information with any government, especially not on users exercising their rights to criticize the government or plan a protest. We review every inquiry for legal sufficiency and routinely object to requests that are overbroad or threaten civil rights. When legally compelled to disclose data, we provide only the minimum required and notify the user whenever possible so they can defend their interests." Read more of this story at Slashdot.

  • CPUID Site Hijacked To Serve Malware Instead of HWMonitor Downloads
    by BeauHD on 11/04/2026 at 7:00 am

    Attackers briefly hijacked part of CPUID's backend and swapped legitimate download links on its site with malware-laced ones. "The issue hit tools like HWMonitor and CPU-Z, with users on Reddit and elsewhere starting to notice something wasn't right when installers tripped antivirus alerts or showed up under odd names," reports The Register. From the report: CPUID has since confirmed the breach, pinning it on a compromised backend component rather than tampering with its software builds. "Investigations are still ongoing, but it appears that a secondary feature (basically a side API) was compromised for approximately six hours between April 9 and April 10, causing the main website to randomly display malicious links (our signed original files were not compromised)," one of the site's owners said in a post on X. "The breach was found and has since been fixed." The files themselves appear to have been left alone and remain properly signed, so it doesn't seem like anyone got into the build process. Instead, the problem sat in front of that, in how downloads were being served. For anyone who hit the site during that stretch, though, that distinction offers little comfort. If the link you clicked had been swapped out, you were pulling whatever it pointed to, whether you realized it or not. Read more of this story at Slashdot.

  • To Fill Air Traffic Controller Shortage, FAA Turns To Gamers
    by BeauHD on 11/04/2026 at 3:30 am

    An anonymous reader quotes a report from the New York Times: As the Trump administration seeks to fill a national shortage of air traffic controllers, officials are targeting a new talent pool: gamers. The Federal Aviation Administration on Friday is making a recruiting push aimed at avid players of video games, as the agency strives to fill thousands of vacancies that lawmakers have said leave the traveling public less safe. In a new YouTube ad, the agency is using flashy graphics and the promise of six-figure salaries to convince video game enthusiasts to apply their trigger fingers in service of air safety. In recent years, video gamers have emerged as a target demographic for recruiters at a number of federal agencies, including the military and the Department of Homeland Security. They are welcomed for their hand-eye coordination, quick decision-making in complex environments and ability to remain focused on screens for hours on end. "To reach the next generation of air traffic controllers, we need to adapt," Transportation Secretary Sean Duffy said in a statement. Focusing recruiting efforts on gamers, he added, "taps into a growing demographic of young adults who have many of the hard skills it takes to be a successful controller." [...] The F.A.A. plans to begin prioritizing recruiting gamers over more traditional avenues like college fairs, officials said, pointing out that only 25 percent of controllers have a traditional college degree, while the vast majority appear to have logged hours gaming. During the presidential transition in 2024, incoming Trump administration officials polled about 250 new air traffic academy graduates over six weeks. Only two of those interviewed were not gamers, according to F.A.A. officials [...]. Students who failed out of the training academy were not similarly queried, officials said, though they have plans to conduct more comprehensive exit interviews in the future. Still, the overwhelming presence of gaming habits among graduates tracked with what they were hearing anecdotally from controllers already certified to work in towers and other air traffic facilities, the officials said, many of whom liked to play video games during breaks in their shifts. Read more of this story at Slashdot.

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