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

  • US Police Now Armed With Israeli Spy Vans Simulating Mobile Phone Towers
    by BeauHD on 21/07/2026 at 11:00 am

    Longtime Slashdot reader schwit1 quotes an X post by Josh Walkos, author of the Substack We the Free: If you thought Flock was bad check out Falconet. Falconet from Israeli company Cognyte serves as a cell tower simulator that intercepts cell phone data from all devices within range. Police mount these systems in Tahoes so the vehicles can collect information while driving through areas without any direct interaction with targets. This mobile approach generates ongoing records of phone locations and communications for everyone nearby rather than only suspects, which creates comprehensive movement profiles and bypasses traditional warrant requirements under the Fourth Amendment. Cognyte sells the technology directly to U.S. agencies, as shown by the Texas Department of Public Safety purchase of four Tahoes where over three point eight million dollars went to the interception equipment. Adoption spreads through routine vehicle procurement with little external review of how the collected data is stored or shared. Once active the systems permit warrantless collection of private cell phone data across entire communities during normal patrols, which enables potential misuse and leaves individuals with no effective way to discover or contest the surveillance. Read more of this story at Slashdot.

  • Drinking 5 Cups of Coffee a Day Could Reduce Heart Risk
    by BeauHD on 21/07/2026 at 7:00 am

    A new American Heart Association scientific statement concludes that up to about 400 milligrams a day, or roughly three to five cups of plain coffee, is safe for most adults and may be linked to lower risks of cardiovascular disease. The benefits appear to depend heavily on the source and preparation, with coffee and tea looking more favorable than energy drinks, and added sugar, cream, syrups, or sweeteners potentially canceling out the upside. ScienceAlert reports: "Caffeine consumed in coffee is a key part of daily life for millions of people," says Gregory Marcus, cardiologist at the University of California, San Francisco, and Chair of the AHA volunteer writing group behind the statement. "In our review of the most recent research, for most adults, intake of up to 400 milligrams of caffeine per day, the equivalent of up to five cups of caffeinated coffee per day without added sugars or fillers, is safe and does not increase cardiovascular risk." The statement focused on caffeine's relationship with cardiovascular risk factors, such as blood pressure and diabetes, as well as types of cardiovascular disease, including arrhythmias, coronary artery disease, stroke, and heart failure. The picture that emerges is complicated, but generally positive. [...] All up, the new AHA statement concludes that there's a growing body of evidence that caffeine isn't harmful when taken in moderation, and that coffee specifically may be beneficial. The statement was published in the journal Circulation. Read more of this story at Slashdot.

  • Hackers Are Exploiting Recently Patched WordPress Bugs, Putting Millions of Websites at Risk
    by BeauHD on 21/07/2026 at 3:30 am

    An anonymous reader quotes a report from TechCrunch: Hackers are breaking into websites that run vulnerable versions of the popular blogging software WordPress, according to several cybersecurity firms. One estimate puts the number of vulnerable WordPress websites at tens of millions as of Monday. Last week, WordPress patched two critical security flaws, urging people who run its software on their websites to update it "immediately." The vulnerabilities are so severe that WordPress enabled forced updates where possible. Since then, cybersecurity companies Patchstack, Hexastrike, and WatchTowr have all warned that hackers are exploiting the vulnerabilities in the wild, meaning they are taking over websites that are still running susceptible versions of WordPress. It's unclear how many WordPress-powered websites on the internet are at risk, but it's possible to make some educated guesses. The vulnerable versions of WordPress are 6.9.0 through 6.9.4, and 7.0.0 to 7.0.1. According to WordPress' official stats, there are more than 400 million websites that run those flawed versions, although these statistics likely don't reflect websites that have recently been patched. Cybersecurity consultant Daniel Card, who told TechCrunch that he looked at a sample of around 3,500 WordPress websites, estimates that less than 15% are vulnerable. Applying Card's projection across the total population of WordPress websites on the internet, the total figure would still be around 90 million. [...] One of the critical WordPress bugs was found and reported by Adam Kues of cybersecurity firm Searchlight Cyber, which dubbed it WP2Shell. Paired with the other bug, hackers can take full remote control of vulnerable websites. Read more of this story at Slashdot.

  • New Orleans Cops Published Policy Document Allowing Weaponized Drones
    by BeauHD on 20/07/2026 at 11:00 pm

    A draft New Orleans Police Department drone manual briefly published online would have allowed police drones to carry weapons with written approval from the superintendent, according to 404 Media. NOPD says the document was only an early draft and that its current policy (PDF) bans drones from carrying weapons or hazardous materials. 404 Media reports: The current version, live as of July 1, has different language: "The sUAS shall not be equipped with weapons or hazardous materials of any kind," referring to small Unmanned Aerial Systems, or drones. According to the NOPD, the operations manual it published to the internet with the rules for weaponized drones was an early draft. "The manual published on July 1 is the current published version of the policy. Earlier versions were draft versions that were presented for review before adoption of the current policy," NOPD told 404 media. "NOPD has made it clear we are not and will not be equipping drones with weapons or other hazardous materials." NOPD didn't answer follow-up questions about how or why the draft version of the manual was published. But the publication of a police drone manual that opens the door for weaponized quadcopters is important, and comes as drone companies and police flirt with the idea of putting weapons on their drones. New Orleans has long been a pioneer of camera and drone driven policing and the cops have used controversial tactics to get around public scrutiny and regulations. It shows that what the police are circulating amongst themselves and thinking about privately, what they perhaps want to happen, does not match public policy. Read more of this story at Slashdot.

  • Longtime Web-Weirdness Site Fark Faces Ad Pinch
    by BeauHD on 20/07/2026 at 10:40 pm

    sandbagger writes: Fark.com is ancient in internet terms. It's not social media. It's not quite a news site. It's a holdover from the dot-com era and is invisible to Google, which makes its community great but has necessitated begging. "[W]e won't survive this year without more TF subscribers," wrote founder Drew Curtis in a post on Bluesky. "Spread the word." For the unfamiliar, Fark is one of the web's OG community news sites that features a wonderfully weird mix of user-submitted links, absurd headlines, Photoshop contests and comment-section mayhem. It has also been featured numerous times on Slashdot over the decades, from a 2007 review of founder Drew Curtis' book and a 2010 story about his skepticism of "the wisdom of crowds" to a full Slashdot interview with Curtis in 2015. For longtime readers of both sites, Fark feels like an old neighbor from an earlier, stranger and arguably more fun era of the internet. Read more of this story at Slashdot.

  • China's New AI Model Halts New Subscriptions As Demand Swamps Capacity
    by BeauHD on 20/07/2026 at 9:00 pm

    Moonshot AI has temporarily paused new subscriptions for its Kimi K3 model after demand surged beyond the company's current capacity within days of the launch. The open-source Chinese AI model, described as one of the largest of its kind at 2.8 trillion parameters, has rattled U.S. rivals by beating Anthropic's Fable 5 and OpenAI's GPT-5.6 Sol in front-end coding tests. The Associated Press reports: "Kimi K3 has received far more love than we expected," Moonshot AI, which is Beijing-based, wrote in a X post late on Sunday. "Over the past 48 hours, demand has pushed close to the limits of our current capacity." Moonshot said that it's prioritizing existing subscribers and would be temporarily pausing new ones. "We're adding capacity as fast as we can and will reopen new subscription spots in batches," it added. The AI startup also posted a similar message on Chinese social media. "New model releases generally trigger massive interest, which can strain existing compute infrastructure," said Lian Jye Su, a chief analyst at the technology research and advisory group Omdia. "This does show Moonshot AI does not have sufficient compute chips to serve the current surge in demand." Su said that the key reason was more likely due to Moonshot not fully anticipating the surge in K3's popularity. K3 is "very demanding" in terms of compute requirements, he said, making compute allocation challenging and expensive. 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