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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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  • Journalist Spots Fugitive Terrorist Using Facial Recognition Software
    by EditorDavid on 30/05/2026 at 10:34 pm

    Slashdot reader Bruce66423 writes: A German court this week sentenced a member of the Red Army Faction — a far-left terrorist organisation that operated in West Germany in the 1970s and 1980s — to jail. [67-year-old Daniela Klettewas was sentenced to 13 years for armed robberies, according to the Guardian, and "she also faces trial for alleged involvement in three attacks in 1990 and 1994: a failed bombing in front of a bank, a shooting at the US embassy in Bonn and a 1993 bombing at a prison.".] She had remained hidden for decades, and the German police hadn't deployed facial recognition software to catch her. But according to the article a journalist did, to good effect. Is the ban on the police using it a good thing? Is it good that a journalist was able to track her down using it? Read more of this story at Slashdot.

  • Linux Developers Consider Retiring The x32 ABI
    by EditorDavid on 30/05/2026 at 9:34 pm

    The Linux kernel mailing list has a new patch proposing the retirement of the x32 ABI, reports Phoronix: The Linux x32 ABI for x86_64 processors allow making use of the full 64-bit register file and wide data path but retaining 32-bit pointers to provide for a smaller memory footprint when not needing 64-bit pointers. Linux x32 came to the party late and didn't enjoy much adoption over the years and is now looking at possible removal from the Linux kernel. The x32 code was a nice concept for helping lower memory footprint requirements while otherwise making use of the x86_64 capabilities, but with its limited adoption and x86_64 simply being the de facto standard these days, Linux kernel developers are looking at phasing out the x32 ABI. The x32 ABI was added in Linux 3.4 back in 2012 plus also required updated compiler support too. The proposed patch argues "there is practically no real use for x32," noting that some Linux vendors (like Debian) already disable x32 by default to reduce attack surfaces. "Should nothing happen within the next half year, lets remove code bits around August after the summer break." Discussions about dropping x32 support first started in 2018... Read more of this story at Slashdot.

  • 'Call Of Duty: Warzone' Is Shutting Down On PS4 And Xbox One
    by EditorDavid on 30/05/2026 at 8:34 pm

    Call Of Duty: Warzone is shutting down on PS4 and Xbox One later this year, reports Kotaku. As Call of Duty fully transitions to PS5 and Xbox Series X/S (and Switch 2), its popular battle royale spin-off, Warzone, is also ditching the old consoles. Later this year, Warzone will no longer be playable on PS4 or Xbox One... Shortly after Modern Warfare 4 ( MW4) launches on October 23, it will be integrated with Warzone. But because MW4 is skipping PS4 and Xbox One, Activision is starting the process of shutting down Warzone on those older consoles... "Beginning June 4, the game will no longer be available for new downloads on those platforms," [Activision wrote on their blog], "though existing players can continue playing until Season 1 launches. Certain items, such as Call of Duty Points bundle purchases, will no longer be available on those platforms...." Players who have properly linked their platform accounts to their Activision accounts will be able to keep all their progress and unlocks once they leap to PS5, Xbox Series X/S, or PC. Activision also confirmed on its support site that all past Call of Duty games will remain playable online on PS4 and Xbox One. The upcoming Call of Duty: Modern Warfare 4 "will be set against a full-scale invasion of South Korea," according to the Washington Post. And they report that Infinity Ward will release the game October 23 "on all modern gaming platforms including, notably, the Nintendo Switch 2. (The blockbuster franchise has long skipped Nintendo consoles.)" The campaign introduces Private Park, a young Korean soldier thrown into combat for the first time, framed as a classic "zero-to-hero story" against the backdrop of global calamity. The franchise's most recognizable hero, Capt. John Price, also returns, this time as a rogue agent, picking up the story of the Modern Warfare timeline that began with 2019's reboot title... [T]he game features a fictional North Korean leader, rather than Kim Jong Un or his family. Infinity Ward said it consulted regional specialists, people who defected from the North and the studio's own Korean employees. When asked whether the studio is braced for a diplomatic response from Pyongyang (familiar territory for the series), [Jack O'Hara, co-head of Infinity Ward] was dry about it. "We've had state responses to our games before. We'll find out what we all think about each other soon enough," he said... Infinity Ward is making its most significant mechanical changes in years. The game will remove "bloom," the randomized bullet spread visual trick that game developers use to simulate gunfire chaos, while firing guns from the hip. Instead, bullets will exit the gun in the same direction as the visible recoil on screen, rewarding aim over chance... The studio is also introducing Kill Block, a multiplayer map that reconfigures itself between matches using a modular system of interchangeable sections, producing more than 500 possible layouts. Read more of this story at Slashdot.

  • Microsoft Criticized for Threatening Legal Action Against Security Researcher
    by EditorDavid on 30/05/2026 at 7:34 pm

    "A security researcher published a series of unpatched bugs in Microsoft products," reports TechCrunch, "along with code to exploit them." Microsoft's response to the researcher? "Threatening to take legal action and call the cops on them." On Wednesday, Microsoft published a blog post criticizing the researcher, who goes by the handle "Nightmare Eclipse," for publicly disclosing a series of bugs, including BlueHammer, RedSun, UnDefend, and YellowKey. The flaws affected products such as the Windows built-in antivirus engine Defender and the disk-encryption tool BitLocker. The core of Microsoft's complaints is that the researcher did not attempt to report the bugs so that the company could fix them. That would have been "responsible," as Microsoft's blog put it. The other side of the company's argument is that by publishing the details of the bugs and how to exploit them before they were patched, Nightmare Eclipse may have aided malicious hackers. Some of the vulnerabilities Nightmare Eclipse disclosed have since been used by hackers in real-world attacks, according to Microsoft, as well as the U.S. cybersecurity agency CISA. "Our Digital Crimes Unit will continue bringing cases against these actors and those that enable their criminal activity — coordinating as needed with law enforcement around the world," Microsoft wrote... In a series of blog posts published in the last couple of weeks — without providing many specific details — Nightmare Eclipse claimed to have been in contact with Microsoft, but the company allegedly mistreated them, including revoking access to their Microsoft Security Response Center account, the portal where researchers can report vulnerabilities to the tech giant. Nightmare Eclipse's implication was that they had no choice but to release the vulnerabilities publicly... The researchers published the bugs on open source repositories GitHub (owned by Microsoft) and GitLab. The researchers' accounts on those platforms have been banned... In response to this latest controversy with Nightmare Eclipse, countless researchers have shared their bad experiences reporting bugs to Microsoft. Thanks to long-time Slashdot reader Elektroschock for sharing the news. Read more of this story at Slashdot.

  • Mars Minerals Reveals an Ancient Ocean's Potential For Life - and a Possible Way to Make Oxygen
    by EditorDavid on 30/05/2026 at 6:34 pm

    Researchers have identified a ring of minerals around the largest basin in the northern hemisphere of Mars (which past research suggests held a large body of water). Phys.org says the research provides new clues on when life may have been possible on Mars — and how future astronauts could make oxygen: Manganese oxides and hydroxides (collectively written as manganese (hydr)oxides) can act as geological proxies for past oceans... The team involved in the new study analyzed short-wave infrared (SWIR) data from China's Zhurong rover, ESA's OMEGA orbiter and NASA's CRISM orbiter to identify and quantify manganese (hydr)oxides... The team says the placement of the ring indicates that the ring formed during the Hesperian epoch — a geologic period on Mars that occurred roughly 3.7 to 3.0 billion years ago. The Hesperian epoch marked the transition from the warmer, wetter, and volcanically active Martian world to a cold, dry, and dusty planet... [when "the potential for further prebiotic evolution on the surface was significantly reduced."] "This yields a final estimated duration of 0.8-1.5 million years for the presence of stable aqueous conditions in Utopia Planitia. This timescale significantly exceeds what is typically expected for transient surface water activity on Mars, suggesting that Utopia Planitia hosted a long-lived and evolving aquatic system during the Hesperian epoch, rather than a short-lived or rapidly evaporating water body," write the study authors. The researchers say that although this does not provide direct evidence of early life, it does suggest that Mars may have provided an environment conducive to initiating early forms of life. The timeline of the ocean matches the minimal timescale required for prebiotic chemistry, and also temporally overlaps with the period on Earth in which scientists believe the earliest forms of life first arose, approximately 3.4 billion years ago. The study authors also note that the conditions for life may have also extended into the next Amazonian period on Mars. They write, "If MnOx formation or redistribution occurred during the Amazonian, this would suggest that Mars may have maintained episodic or localized liquid water environments significantly later than traditionally assumed." Interestingly, the authors also bring up the potential for future human habitation on Mars. They suggest that oxygen can be produced by using the manganese (hydr)oxides for water-splitting reactions that generate oxygen through photocatalysis, potentially supporting human activities or even terraforming. Of course, this would be a long way off. Read more of this story at Slashdot.

  • DuckDuckGo Installs Up 30% After Google Announced AI Search
    by EditorDavid on 30/05/2026 at 5:34 pm

    After Google announced AI-emphasizing changes to its search results, many web surfers began defecting to DuckDuckGo, reports TechCrunch. (They describe DuckDuckGo as "a privacy-focused alternative" that accounts for around 2% of the U.S. search market...) DuckDuckGo said U.S. app installs went up 18.1% week-over-week on average during the May 20 to May 25 period, compared to May 13 to May 18. The company said that growth was sustained for six consecutive days and peaked at 30.5% on May 25. On iOS, the rate of install is even higher, with week-over-week growth hitting a 33% average, peaking at 69.9%... DuckDuckGo said the trend is stronger in the U.S, and that DuckDuckGo continued to gain users over the Memorial Day weekend, when it usually sees a dip in traffic. Some of that data is backed up by third parties. App analytics company Apptopia found a 29% increase in average daily downloads in the U.S. and a 12% increase globally over the same period. DuckDuckGo also said visits to its AI-free search page, noai.duckduckgo.com averaged 22.7% week-over-week growth, peaking at 27.7% on May 24, according to the article. ("DuckDuckGo also offers an AI Image Filter that filters out AI-created images from search results.") TechCrunch delves into the reason why: I overheard a woman on the phone saying she was switching to DuckDuckGo because you can "opt out of using AI... Google just isn't Google anymore," she said. It seems that others had the same idea... Some have argued it will kill the open web, while others shared concerns that AI overviews surface inaccurate responses and take away control from users who might not want to use AI. It also overcomplicates simple things. A Google spokesperson pointed out that AI Mode isn't the default in their search results. (And CNET notes Google include an AI-free "Web" choice in its results if you just want a page of ftraditional blue links.) TechCrunch adds that DuckDuckGo also offers a separate free tool called Duck.ai offering access to models including Claude, Meta's Llama and OpenAI's GPT-5 mini. "All chats are private because DuckDuckGo strips the user's IP address before requests reach model providers, deletes conversations within 30 days, and prevents chats from being used for training." Read more of this story at Slashdot.

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