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

  • New Filtration Technology Could Be Gamechanger In Removal of PFAS 'Forever Chemicals'
    by BeauHD on 24/01/2026 at 3:30 am

    Bruce66423 shares a report from the Guardian: New filtration technology developed by Rice University may absorb some Pfas "forever chemicals" at 100 times the rate than previously possible, which could dramatically improve pollution control and speed remediations. Researchers also say they have also found a way to destroy Pfas, though both technologies face a steep challenge in being deployed on an industrial scale. A new peer-reviewed paper details a layered double hydroxide (LDH) material made from copper and aluminum that absorbs long-chain Pfas up to 100 times faster than commonly used filtration systems. [...] [Michael Wong, director of Rice's Water Institute, a Pfas research center] said Rice's non-thermal process works by soaking up and concentrating Pfas at high levels, which makes it possible to destroy them without high temperatures. The LDH material Rice developed is a variation of similar materials previously used, but researchers replaced some aluminum atoms with copper atoms. The LDH material is positively charged and the long-chain Pfas are negatively charged, which causes the material to attract and absorb the chemicals, Wong said. [...] Pfas are virtually indestructible because their carbon atoms are bonded with fluoride, but Rice found that the bonds could be broken if the chemicals in the material were heated to 400-500C -- a relatively low temperature. The fluoride gets trapped in the LDH material and is bonded to calcium. The leftover calcium-fluoride material is safe and can be disposed of in a landfill, Wong said. The process works with some long-chain Pfas that are among the most common water pollutants, and it also absorbed some smaller Pfas that are commonplace. Wong said he is confident the material can be used to absorb a broad array of Pfas, especially if they are negatively charged. Most new Pfas elimination systems fail to work at an industrial scale. Wong said the new material has an advantage because its absorption rate is so strong, it can be used repeatedly and it is in a "drop in material," meaning it can be used with existing filtration infrastructure. That eliminates one of the major cost barriers. Read more of this story at Slashdot.

  • California Becomes First State To Join WHO Disease Network After US Exit
    by BeauHD on 24/01/2026 at 2:02 am

    California became the first U.S. state to join the World Health Organization's Global Outbreak Alert and Response Network (GOARN), one day after the U.S. formally exited the WHO. The Hill reports: This announcement comes just one day after the U.S.'s withdrawal from the WHO became official after nearly 80 years of membership, having been a founding member of the organization. "The Trump administration's withdrawal from WHO is a reckless decision that will hurt all Californians and Americans," [California Governor Gavin Newsom] said in a statement. "California will not bear witness to the chaos this decision will bring. We will continue to foster partnerships across the globe and remain at the forefront of public health preparedness, including through our membership as the only state in WHO's Global Outbreak Alert & Response Network." Read more of this story at Slashdot.

  • Campaigner Launches $2 Billion Legal Action In UK Against Apple Over Wallet's 'Hidden Fees'
    by BeauHD on 24/01/2026 at 1:25 am

    Longtime Slashdot reader AmiMoJo shares a report from the Guardian: The financial campaigner James Daley has launched a 1.5 billion pound (approximately $1.5 billion) class action lawsuit against Apple over its mobile phone wallet, claiming the U.S. tech company blocked competition and charged hidden fees that ultimately harmed 50 million UK consumers. The lawsuit takes aim at Apple Pay, which they say has been the only contactless payment service available for iPhone users in Britain over the past decade. Daley, who is the founder of the advocacy group Fairer Finance, claims this situation amounted to anti-competitive behavior and allowed Apple to charge hidden fees, ultimately pushing up costs for banks that passed charges on to consumers, regardless of whether they owned an iPhone. It is the first UK legal challenge to the company's conduct in relation to Apple Pay, and takes place months after regulators like the Competition and Markets Authority and the Payments Systems Regulator began scrutinising the tech industry's digital wallet services. The case has been filed with the Competition Appeal Tribunal, which will now decide whether the class action case can move forward. [...] Daley's lawsuit alleges that Apple refused to give other app developers and outside businesses access to the contactless payment technology on its iPhones, which meant it could charge banks and card issuers fees on Apple Pay transactions that his lawyers say "are not in line with industry practice." The lawsuit notes that similar fees are not charged on equivalent payments on Android devices, which are built by Google. It says that the additional costs were borne by UK consumers, having been passed on through charges on a range of personal banking products ranging from current accounts, credit cards, to savings and mortgages. The lawsuit says that about 98% of consumers are exposed to banks that listed cards on Apple Pay, meaning the vast majority of the UK population may have been affected. Read more of this story at Slashdot.

  • Justice Department Opens Criminal Probe Into Silicon Valley Spy Allegations
    by BeauHD on 24/01/2026 at 12:45 am

    The U.S. Department of Justice has opened a criminal investigation into Deel over allegations that it recruited a spy inside rival Rippling, according to documents seen by The Wall Street Journal. From the report: An Ireland-based Rippling employee, Keith O'Brien, alleged in an affidavit filed in April that Deel Chief Executive Alex Bouaziz recruited him and gave him instructions for what information to take from Rippling. O'Brien alleged that other executives were involved in the spying plot, including Bouaziz's father, who is Deel's executive chairman and chief strategy officer. A spokeswoman for Deel said the company isn't aware of a criminal investigation but is willing to cooperate with authorities. The company has previously said: "We deny all legal wrongdoing and look forward to asserting our counterclaims." Unsealed court documents allege that an entity tied to Deel transferred $6,000 to an account owned by the wife of Chief Operating Officer Dan Westgarth, and that the same amount was forwarded from the account to O'Brien seconds later. Read more of this story at Slashdot.

  • TikTok Is Now Collecting Even More Data About Its Users
    by BeauHD on 24/01/2026 at 12:02 am

    An anonymous reader quotes a report from Wired: When TikTok users in the U.S. opened the app today, they were greeted with a pop-up asking them to agree to the social media platform's new terms of service and privacy policy before they could resume scrolling. These changes are part of TikTok's transition to new ownership. In order to continue operating in the U.S., TikTok was compelled by the U.S. government to transition from Chinese control to a new, American-majority corporate entity. Called TikTok USDS Joint Venture LLC, the new entity is made up of a group of investors that includes the software company Oracle. It's easy to tap "agree" and keep on scrolling through videos on TikTok, so users might not fully understand the extent of changes they are agreeing to with this pop-up. Now that it's under U.S.-based ownership, TikTok potentially collects more detailed information about its users, including precise location data. Here are the three biggest changes to TikTok's privacy policy that users should know about. TikTok's change in location tracking is one of the most notable updates in this new privacy policy. Before this update, the app did not collect the precise, GPS-derived location data of U.S. users. Now, if you give TikTok permission to use your phone's location services, then the app may collect granular information about your exact whereabouts. Similar kinds of precise location data is also tracked by other social media apps, like Instagram and X. [...] Rather than an adjustment, TikTok's policy on AI interactions adds a new topic to the privacy policy document. Now, users' interactions with any of TikTok's AI tools explicitly fall under data that the service may collect and store. This includes any prompts as well as the AI-generated outputs. The metadata attached to your interactions with AI tools may also be automatically logged. [...] This change to TikTok's privacy policy may not be as immediately noticeable to users, but it will likely have an impact on the types of ads you see outside of TikTok. So, rather than just using your collected data to target you while using the app, TikTok may now further leverage that info to serve you more relevant ads wherever you go online. As part of this advertising change, TikTok also now explicitly mentions publishers as one kind of partner the platform works with to get new data. Read more of this story at Slashdot.

  • White House Labels Altered Photo of Arrested Minnesota Protester a 'Meme'
    by BeauHD on 23/01/2026 at 11:20 pm

    The White House doubled down after posting a digitally altered photo of Minnesota protester Nekima Levy Armstrong, dismissing it as a "meme" despite objections from her attorney and comparisons to reality-distorting propaganda. "YET AGAIN to the people who feel the need to reflexively defend perpetrators of heinous crimes in our country I share with you this message: Enforcement of the law will continue. The memes will continue. Thank you for your attention to this matter," White House spokesperson Kaelan Dorr wrote in a post on X. The Hill reports: The statement came after Homeland Security Secretary Kristi Noem posted a photo of Armstrong's arrest Thursday showing Armstrong with what appears to be a blank facial expression. However, the White House later posted an altered version of the same photo that shows Armstrong crying. Armstrong's attorney Jordan Kushner said in an interview with CNN that an agent was recording Armstrong's arrest on their cellphone. "I've never seen anything like it. It's so unprofessional," Kushner said. "He was ordered to do it because the government was looking to make a spectacle of this case. I observed the whole thing. She was dignified, calm, rational the whole time." Kushner went on to call the move to alter the photo "a hallmark of a fascist regime where they actually alter reality." 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