Skip to content
I T S S
  • Welcome
  • Hardware
  • Internet
  • Networking
  • Security
  • Data Recovery
  • Support
  • Contact
  • Webmail

A Nice Little Cryptography Primer

By itss | 28/06/2021
0 Comment

Pun Intended.

Category: Technology
Post navigation
← pfSense / Wireguard / Bad Code / Close Call Why Quake3 was so fast : Fast Inverse Square Root →

Recent Posts

  • Hardware Exploits?
  • Why Quake3 was so fast : Fast Inverse Square Root
  • A Nice Little Cryptography Primer
  • pfSense / Wireguard / Bad Code / Close Call
  • Apple Continues Its Trip To The Dark Side With The Release of MacOS 17 (Big Sur)

Slashdot

News for nerds

  • Valve Faces Second, Class-Action Lawsuit Over Loot Boxes
    by BeauHD on 11/03/2026 at 10:00 am

    Valve is facing a new consumer class-action lawsuit two weeks after New York sued the video game company for "letting children and adults illegally gamble" with loot boxes. The new lawsuit is similar, alleging that loot boxes in games like Counter-Strike 2, Dota 2, and Team Fortress 2 are "carefully engineered to extract money from consumers, including children, through deceptive, casino-style psychological tactics." "We believe Valve deliberately engineered its gambling platform and profited enormously from it," Steve Berman, founder and managing partner at law firm Hagens Berman, said in a press release. "Consumers played these games for entertainment, unaware that Valve had allegedly already stacked the odds against them. We intend to hold Valve accountable and put money back in the pockets of consumers." PC Gamer reports: The system is well known to anyone who's played a Valve multiplayer game: Earn a locked loot box by playing, pay $2.50 for a key, unlock it, get a digital doohickey that's sometimes worth hundreds or even thousands of dollars but far more often is worth just a few pennies. Is that gambling? If these cases go to court, we'll find out. The full complaint points out that the unlocking process is even designed to look like a slot machine: "Images of possible items scroll across the screen, spinning fast at first, then slowing to a stop on the player's 'prize.' Players buy and open loot boxes for the same reason people play slot machines -- the hope of a valuable payout." Loot boxes, the complaint continues, are not "incidental features" of Valve's games, but rather "a deliberate, carefully engineered revenue model." So too is the Steam Community Market, and Steam itself, which the suit claims is "deliberately designed" to enable the sale of digital items on third-party marketplaces through "trade URLs," despite Valve's terms of service prohibiting off-platform sales. And while the debate over whether loot boxes constitute a form of gambling continues to rage, the suit claims Valve's system does indeed qualify under Washington law, which defines gambling as "staking or risking something of value upon the outcome of a contest of chance or a future contingent event not under the person's control or influence." "Valve's loot boxes satisfy every element of this definition," the lawsuit alleges. "Users stake money (the price of a key) on the outcome of a contest of chance (the random selection of a virtual item), and the items received are 'things of value' under RCW 9.46.0285 because they can be sold for real money through Valve's own marketplace and through third-party marketplaces that Valve has fostered and facilitated." Read more of this story at Slashdot.

  • A 1,300-Pound NASA Spacecraft To Re-Enter Earth's Atmosphere
    by BeauHD on 11/03/2026 at 7:00 am

    Van Allen Probe A, a 1,300-pound (600 kg) NASA satellite launched in 2012 to study Earth's radiation belts, is expected to re-enter Earth's atmosphere this week. While most of it is expected to burn up during descent, "some components may survive," reports the BBC. "The space agency said there is a one in 4,200 chance of being harmed by a piece of the probe, which it characterized as 'low' risk." From the report: The spacecraft is projected to re-enter around 19:45 EST (00:45 GMT) on Tuesday the U.S. Space Force predicted, according to Nasa, though there is a 24-hour margin of "uncertainty" in the timing. [...] The spacecraft and its twin, Van Allen Probe B, were on a mission to gather unprecedented data on Earth's two permanent radiation belts. It was not immediately clear where in Earth's atmosphere the satellite is projected to re-enter. NASA and the U.S. Space Force has said it will monitor the re-entry and update any predictions. [...] Van Allen Probe B is not expected to re-enter the Earth's atmosphere before 2030. Read more of this story at Slashdot.

  • After Outages, Amazon To Make Senior Engineers Sign Off On AI-Assisted Changes
    by BeauHD on 11/03/2026 at 3:30 am

    An anonymous reader quotes a report from the Financial Times: Amazon's ecommerce business has summoned a large group of engineers to a meeting on Tuesday for a "deep dive" into a spate of outages, including incidents tied to the use of AI coding tools. The online retail giant said there had been a "trend of incidents" in recent months, characterized by a "high blast radius" and "Gen-AI assisted changes" among other factors, according to a briefing note for the meeting seen by the FT. Under "contributing factors" the note included "novel GenAI usage for which best practices and safeguards are not yet fully established." "Folks, as you likely know, the availability of the site and related infrastructure has not been good recently," Dave Treadwell, a senior vice-president at the group, told employees in an email, also seen by the FT. The note ahead of Tuesday's meeting did not specify which particular incidents the group planned to discuss. [...] Treadwell, a former Microsoft engineering executive, told employees that Amazon would focus its weekly "This Week in Stores Tech" (TWiST) meeting on a "deep dive into some of the issues that got us here as well as some short immediate term initiatives" the group hopes will limit future outages. He asked staff to attend the meeting, which is normally optional. Junior and mid-level engineers will now require more senior engineers to sign off any AI-assisted changes, Treadwell added. Amazon said the review of website availability was "part of normal business" and it aims for continual improvement. "TWiST is our regular weekly operations meeting with a specific group of retail technology leaders and teams where we review operational performance across our store," the company said. Read more of this story at Slashdot.

  • Tony Hoare, Turing Award-Winning Computer Scientist Behind QuickSort, Dies At 92
    by BeauHD on 11/03/2026 at 1:00 am

    Tony Hoare, the Turing Award-winning pioneer who created the Quicksort algorithm, developed Hoare logic, and advanced theories of concurrency and structured programming, has died at age 92. News of his passing was shared today in a blog post. The site I Programmer also commemorated Hoare in a post highlighting his contributions to computer science and the lasting impact of his work. Personal accounts have been shared on Hacker News and Reddit. Many Slashdotters may know Hoare for his aphorism regarding software design: "There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." Read more of this story at Slashdot.

  • Intel Demos Chip To Compute With Encrypted Data
    by BeauHD on 10/03/2026 at 11:00 pm

    An anonymous reader quotes a report from IEEE Spectrum: Worried that your latest ask to a cloud-based AI reveals a bit too much about you? Want to know your genetic risk of disease without revealing it to the services that compute the answer? There is a way to do computing on encrypted data without ever having it decrypted. It's called fully homomorphic encryption, or FHE. But there's a rather large catch. It can take thousands -- even tens of thousands -- of times longer to compute on today's CPUs and GPUs than simply working with the decrypted data. So universities, startups, and at least one processor giant have been working on specialized chips that could close that gap. Last month at the IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco, Intel demonstrated its answer, Heracles, which sped up FHE computing tasks as much as 5,000-fold compared to a top-of the-line Intel server CPU. Startups are racing to beat Intel and each other to commercialization. But Sanu Mathew, who leads security circuits research at Intel, believes the CPU giant has a big lead, because its chip can do more computing than any other FHE accelerator yet built. "Heracles is the first hardware that works at scale," he says. The scale is measurable both physically and in compute performance. While other FHE research chips have been in the range of 10 square millimeters or less, Heracles is about 20 times that size and is built using Intel's most advanced, 3-nanometer FinFET technology. And it's flanked inside a liquid-cooled package by two 24-gigabyte high-bandwidth memory chips—a configuration usually seen only in GPUs for training AI. In terms of scaling compute performance, Heracles showed muscle in live demonstrations at ISSCC. At its heart the demo was a simple private query to a secure server. It simulated a request by a voter to make sure that her ballot had been registered correctly. The state, in this case, has an encrypted database of voters and their votes. To maintain her privacy, the voter would not want to have her ballot information decrypted at any point; so using FHE, she encrypts her ID and vote and sends it to the government database. There, without decrypting it, the system determines if it is a match and returns an encrypted answer, which she then decrypts on her side. On an Intel Xeon server CPU, the process took 15 milliseconds. Heracles did it in 14 microseconds. While that difference isn't something a single human would notice, verifying 100 million voter ballots adds up to more than 17 days of CPU work versus a mere 23 minutes on Heracles. Read more of this story at Slashdot.

  • Amazon Wins Court Order To Block Perplexity's AI Shopping Bots
    by BeauHD on 10/03/2026 at 10:00 pm

    Last November, Amazon sued Perplexity demanding that the AI search startup stop allowing its AI browser agent, Comet, to make purchases for users online. Today, a judge ruled in favor of the tech giant, granting it a temporary court injunction blocking the scraping of Amazon's website. According to court filings, the judge found strong evidence the tool accessed the retailer's systems "without authorization." CNBC reports: In a ruling dated Monday, U.S. District Judge Maxine Chesney wrote that Amazon has provided "strong evidence" that Perplexity's Comet browser accessed its website at the user's direction, but "without authorization" from the e-commerce giant. Chesney said Amazon submitted "essentially undisputed evidence" that it spent more than $5,000 to respond to the issue, including "numerous hours" where its employees worked to develop tools to block Comet from accessing its private customer tools and to prevent the tool from "future unauthorized access." "Given such evidence, the Court finds Amazon has shown a likelihood of success on the merits of its claim," Chesney wrote. Chesney's ruling includes a weeklong stay to allow Perplexity to appeal the order. Amazon wrote in its original complaint that Perplexity's agents posed security risks to customer data because they "can act within protected computer systems, including private customer accounts requiring a password." The company also said Perplexity's agents created challenges for the company's advertising business, because when AI systems generate ad traffic, the impressions have to be detected and filtered out before advertisers can be billed. "This requires modifications to Amazon's advertising systems, including developing new detection mechanisms to identify and exclude automated traffic," Amazon wrote in its complaint. "These system adaptations are necessary to maintain contractual obligations with advertisers who pay only for legitimate human impressions." Read more of this story at Slashdot.

Archives

  • September 2022
  • November 2021
  • June 2021
  • March 2021
  • November 2020
  • October 2020
  • September 2020
  • February 2020
  • January 2020
  • October 2019
  • August 2018
  • July 2018
  • April 2018
  • February 2018
  • January 2018
  • December 2017
  • October 2017
  • September 2017
  • August 2016
  • July 2016
  • March 2016
  • February 2016
  • August 2015
  • May 2015

Categories

  • Innovation
  • Security
  • Software
  • Technology

Tags

backdoor cisco coding json laziness patterns public information announcement security vulnerability
© 2017 IT Sales & Services Ltd
Quality IT solutions in Tanzania since 2010
Iconic One Theme | Powered by Wordpress