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

  • Analysis of JWST Data Finds - Old Galaxies in a Young Universe?
    by EditorDavid on 15/02/2026 at 3:34 pm

    Two astrophysicists at Spain's Instituto de Astrofísica de Canarias analyzed data from the James Webb Space Telescope — the most powerful telescope available — on 31 galaxies with an average redshift of 7.3 (when the universe was 700 million years old, according to the standard model). "We found that they are on average ~600 million years old old, according to the comparison with theoretical models based on previous knowledge of nearby galaxies..." "If this result is correct, we would have to think about how it is possible that these massive and luminous galaxies were formed and started to produce stars in a short time. It is a challenge." But "The fact that some of these galaxies might be older than the universe, within some significant confidence level, is even more challenging." The most extreme case is for the galaxy JADES-1050323 with redshift 6.9, which has, according to my calculation, an age incompatible to be younger than the age of the universe (800 million years) within 4.7-sigma (that is, a probability that this happens by chance as statistical fluctuation of one in one million). If this result is confirmed, it would invalidate the standard Lambda-CDM cosmological model. Certainly, such an extraordinary change of paradigm would require further corroboration and other stronger evidence. Anyway, it would be interesting for other researchers to try to explain the Spectral Energy Distribution of JADES-1050323 in standard terms, if they can ... and without introducing unrealistic/impossible models of extinction, as is usually done. The findings are published in the journal Monthly Notices of the Royal Astronomical Society. Read more of this story at Slashdot.

  • Vim 9.2 Released
    by EditorDavid on 15/02/2026 at 12:34 pm

    "More than two years after the last major 9.1 release, the Vim project has announced Vim 9.2," reports the blog Linuxiac: A big part of this update focuses on improving Vim9 Script as Vim 9.2 adds support for enums, generic functions, and tuple types. On top of that, you can now use built-in functions as methods, and class handling includes features like protected constructors with _new(). The :defcompile command has also been improved to fully compile methods, which boosts performance and consistency in Vim9 scripts. Insert mode completion now includes fuzzy matching, so you get more flexible suggestions without extra plugins. You can also complete words from registers using CTRL-X CTRL-R. New completeopt flags like nosort and nearest give you more control over how matches are shown. Vim 9.2 also makes diff mode better by improving how differences are lined up and shown, especially in complex cases. Plus on Linux and Unix-like systems, Vim "now adheres to the XDG Base Directory Specification, using $HOME/.config/vim for user configuration," according to the release notes. And Phoronix Mcites more new features: Vim 9.2 features "full support" for Wayland with its UI and clipboard handling. The Wayland support is considered experimental in this release but it should be in good shape overall... Vim 9.2 also brings a new vertical tab panel alternative to the horizontal tab line. The Microsoft Windows GUI for Vim now also has native dark mode support. You can find the new release on Vim's "Download" page. Read more of this story at Slashdot.

  • Apple Patches Decade-Old IOS Zero-Day, Possibly Exploited By Commercial Spyware
    by EditorDavid on 15/02/2026 at 8:34 am

    This week Apple patched iOS and macOS against what it called "an extremely sophisticated attack against specific targeted individuals." Security Week reports that the bugs "could be exploited for information exposure, denial-of-service (DoS), arbitrary file write, privilege escalation, network traffic interception, sandbox escape, and code execution." Tracked as CVE-2026-20700, the zero-day flaw is described as a memory corruption issue that could be exploited for arbitrary code execution... The tech giant also noted that the flaw's exploitation is linked to attacks involving CVE-2025-14174 and CVE-2025-43529, two zero-days patched in WebKit in December 2025... The three zero-day bugs were identified by Apple's security team and Google's Threat Analysis Group and their descriptions suggest that they might have been exploited by commercial spyware vendors... Additional information is available on Apple's security updates page. Brian Milbier, deputy CISO at Huntress, tells the Register that the dyld/WebKit patch "closes a door that has been unlocked for over a decade." Thanks to Slashdot reader wiredmikey for sharing the article. Read more of this story at Slashdot.

  • Additional Benefits For Brain, Heart, and Lungs Found for Drugs Like Viagra and Cialis
    by EditorDavid on 15/02/2026 at 4:34 am

    "Research published in the World Journal of Men's Health found evidence that drugs such as Viagra and Cialis may also help with heart disease, stroke risk and diabetes," reports the Telegraph, "as well as enlarged prostate and urinary problems." Researchers found evidence that the same mechanism may benefit other organs, including the heart, brain, lungs and urinary system. The paper reviewed a wide range of published studies [and] identified links between PDE5 inhibitor use and improvements in cardiovascular health. Heart conditions were repeatedly cited as an area where improved blood flow and muscle relaxation may offer benefits. Evidence also linked PDE5 inhibitors with reduced stroke risk, likely to be related to improved circulation and vascular function. Diabetes was another condition where associations with improvement were identified... The review also found evidence of benefit for men with an enlarged prostate, a condition that commonly causes urinary symptoms. Read more of this story at Slashdot.

  • Your Friends Could Be Sharing Your Phone Number with ChatGPT
    by EditorDavid on 15/02/2026 at 2:34 am

    "ChatGPT is getting more social," reports PC Magazine, "with a new feature that allows you to sync your contacts to see if any of your friends are using the chatbot or any other OpenAI product..." It's "completely optional," [OpenAI] says. However, even if you don't opt in, anyone with your number who syncs their contacts are giving OpenAI your digits. "OpenAI may process your phone number if someone you know has your phone number saved in their device's address book and chooses to upload their contacts," the company says... But why would you follow someone on ChatGPT? It lines up with reports, dating back to April, that OpenAI is building a social network. We haven't seen much since then, save for the Sora generative video app, which exists outside of ChatGPT and is more of a novelty. Contact sharing might be the first step toward a much bigger evolution for the world's most popular chatbot. ChatGPT also supports group chats that let up to 20 people discuss and research something using the chatbot. Contact syncing could make it easier to invite people to these chats... [OpenAI] claims it will not store the full data that might appear in your contact list, such as names or email addresses — just phone numbers. However, the company does store the phone numbers in its servers in a coded (or hashed) format. You can also revoke access in your device's settings. 09 Read more of this story at Slashdot.

  • Small Crowd Pays to Watch a Boxing Match Between 80-Pound Chinese Robots
    by EditorDavid on 14/02/2026 at 11:52 pm

    Recently a small crowd paid to watch robots boxing, reports Rest of World. (Almost 3,000 people have now watched the match's 83-minute webcast.) The match was organized by Rek, a San Francisco-based company, and drew hundreds of spectators who had paid about $60-$80 for a ticket to watch modified G1 robots go at each other. Made by Unitree, the dominant Chinese robot maker, they weighed in at around 80 pounds and stood 4.5 feet tall, with human-like hands and dozens of joint motors for flexibility. The match had all the bells and whistles of a regular boxing bout: pulsing music, cameras capturing all the angles, hyped-up introductions, a human referee, and even two commentators. The evening featured two bouts made up of five rounds, each lasting 60 seconds. The robots pranced around the cage, throwing jabs and punches, drawing ohs and ahs from the crowd. They fell sometimes, and needed human intervention to get them back on their feet. The robots were controlled by humans using VR interfaces, which led to some odd moments with robots hitting into the air, throwing multiple punches that failed to even connect with their opponents. One robot controller was a former UFC fighter, the article points out, but "The crowd cheered as a 13-year-old VR pilot named Dash beat his older competitor...." The company behind this event plans more boxing matches with their VR-controlled robots, and even wants to develop "a league of robot boxers, including full-height robots that weigh about 200 pounds and are nearly 6 feet tall." 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