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

  • 2026's Breakthrough Technologies? MIT Technology Review Chooses Sodium-ion Batteries, Commercial Space Stations
    by EditorDavid on 17/01/2026 at 11:41 pm

    As 2026 begins, MIT Technology Review publishes "educated guesses" on emerging technologies that will define the future, advances "we think will drive progress or incite the most change — for better or worse — in the years ahead." This year's list includes next-gen nuclear, gene-editing drugs (as well as the "resurrection" of ancient genes from extinct creatures), and three AI-related developments: AI companions, AI coding tools, and "mechanistic interpretability" for revealing LLM decision-making. But also on the list is sodium-ion batteries, "a cheaper, safer alternative to lithium." Backed by major players and public investment, they're poised to power grids and affordable EVs worldwide. [Chinese battery giant CATL claims to have already started manufacturing sodium-ion batteries at scale, and BYD also plans a massive production facility for sodium-ion batteries.] The most significant impact of sodium-Âion technology may be not on our roads but on our power grids. Storing clean energy generated by solar and wind has long been a challenge. Sodium-ion batteries, with their low cost, enhanced thermal stability, and long cycle life, are an attractive alternative. Peak Energy, a startup in the US, is already deploying grid-scale sodium-ion energy storage. Sodium-ion cells' energy density is still lower than that of high-end lithium-ion ones, but it continues to improve each year — and it's already sufficient for small passenger cars and logistics vehicles. And another "breakthrough technology" on their list is commercial space stations: Vast Space from California, plans to launch its Haven-1 space station in May 2026 on a SpaceX Falcon 9 rocket. If all goes to plan, it will initially support crews of four people staying aboard the bus-size habitat for 10 days. Paying customers will be able to experience life in microgravity and conduct research such as growing plants and testing drugs. On its heels will be Axiom Space's outpost, the Axiom Station, consisting of five modules (or rooms). It's designed to look like a boutique hotel and is expected to launch in 2028. Voyager Space aims to launch its version, called Starlab, the same year, and Blue Origin's Orbital Reef space station plans to follow in 2030. Thanks to long-time Slashdot reader sandbagger for sharing the article. Read more of this story at Slashdot.

  • Predator Spyware Turns Failed Attacks Into Intelligence For Future Exploits
    by EditorDavid on 17/01/2026 at 10:41 pm

    In December 2024 the Google Threat Intelligence Group published research on the code of the commercial spyware "Predator". But there's now been new research by Jamf (the company behind a mobile device management solution) showing Predator is more dangerous and sophisticated than we realized, according to SecurityWeek. Long-time Slashdot reader wiredmikey writes: The new research reveals an error taxonomy that reports exactly why deployments fail, turning black boxes into diagnostic events for threat actors. Almost exclusively marketed to and used by national governments and intelligence agencies, the spyware also detects cybersecurity tools, suppresses forensics evidence, and has built-in geographic restrictions. Read more of this story at Slashdot.

  • To Pressure Security Professionals, Mandiant Releases Database That Cracks Weak NTLM Passwords in 12 Hours
    by EditorDavid on 17/01/2026 at 9:41 pm

    Ars Technica reports: Security firm Mandiant [part of Google Cloud] has released a database that allows any administrative password protected by Microsoft's NTLM.v1 hash algorithm to be hacked in an attempt to nudge users who continue using the deprecated function despite known weaknesses.... a precomputed table of hash values linked to their corresponding plaintext. These generic tables, which work against multiple hashing schemes, allow hackers to take over accounts by quickly mapping a stolen hash to its password counterpart... Mandiant said it had released an NTLMv1 rainbow table that will allow defenders and researchers (and, of course, malicious hackers, too) to recover passwords in under 12 hours using consumer hardware costing less than $600 USD. The table is hosted in Google Cloud. The database works against Net-NTLMv1 passwords, which are used in network authentication for accessing resources such as SMB network sharing. Despite its long- and well-known susceptibility to easy cracking, NTLMv1 remains in use in some of the world's more sensitive networks. One reason for the lack of action is that utilities and organizations in industries, including health care and industrial control, often rely on legacy apps that are incompatible with more recently released hashing algorithms. Another reason is that organizations relying on mission-critical systems can't afford the downtime required to migrate. Of course, inertia and penny-pinching are also causes. "By releasing these tables, Mandiant aims to lower the barrier for security professionals to demonstrate the insecurity of Net-NTLMv1," Mandiant said. "While tools to exploit this protocol have existed for years, they often required uploading sensitive data to third-party services or expensive hardware to brute-force keys." "Organizations that rely on Windows networking aren't the only laggards," the article points out. "Microsoft only announced plans to deprecate NTLMv1 last August." Thanks to Slashdot reader joshuark for sharing the news. Read more of this story at Slashdot.

  • Two More Offshore Wind Projects in the US Allowed to Continue Construction
    by EditorDavid on 17/01/2026 at 8:41 pm

    Friday a federal judge "cleared U.S. power company Dominion Energy to resume work on its Virginia offshore wind project." But a U.S. federal judge also ruled Thursday that another major offshore wind farm is allowed to resume construction, reports the Hill. "The project, which would supply power to New York, was one of five that were halted by the Trump administration in December...." In fact, there were three different court rulings this week each allowing construction to continue on a U.S. wind project: Judge Carl Nichols, a Trump appointee, granted a preliminary injunction allowing Empire Wind to keep building... Another, Revolution Wind, was also allowed to move forward in court this week... The project would provide enough power for up to 500,000 homes, according to its website. The court's decision allows construction to resume while the underlying case against the Trump order plays out. Meanwhile, power company Orsted "is also suing over the pause of its Sunrise Wind project for New York," reports the Associated Press, "with a hearing still to be set." The fifth paused project is Vineyard Wind, under construction in Massachusetts. Vineyard Wind LLC, a joint venture between Avangrid and Copenhagen Infrastructure Partners, joined the rest of the developers in challenging the administration on Thursday. CNN points out that the Vineyard Wind project "has been allowed to send power to the grid even amid Trump's suspension, a spokesperson for regional grid operator ISO-New England told CNN in an email." Residential customers in the mid-Atlantic region, including Virginia, desperately need more energy to service the skyrocketing demand from data centers â" and many are seeing spiking energy bills while they wait for new power to be brought online. CNN notes that president Trump said last week "My goal is to not let any windmill be built; they're losers." The Associated Press adds that "In contrast to the halted action in the US, the global offshore wind market is growing, with China leading the world in new installations. Nearly all of the new electricity added to the grid in 2024 was renewable. The British government said on Wednesday it had secured a record 8.4 gigawatts of offshore wind in Europe's largest offshore wind auction, enough clean electricity to power more than 12m homes." Read more of this story at Slashdot.

  • Dozens of US Colleges Close as Falling Birth Rate Pushes Them Off Enrollment Cliff
    by EditorDavid on 17/01/2026 at 7:34 pm

    A new article from Bloomberg says dozens of America's colleges "succumbed to a fundamental problem killing colleges across the US: not enough students. The schools will award their final degrees this spring, stranding students not yet ready to graduate and forcing faculty and staff to hunt for new jobs." The country's tumbling birth rate is pushing schools toward a "demographic cliff," where a steadily dropping population of people in their late teens and early 20s will leave desks and classrooms empty. Many smaller, lesser-known schools like Cazenovia have already hit the precipice. They're firing professors, paring back liberal arts courses in favor of STEM — or closing altogether. Others will likely reach the cliff in the next few years... [T]the US birth rate ticked upward slightly before the 2008 financial crisis, and that brief demographic boost has kept enrollment at larger schools afloat. But the nationwide pool of college-aged Americans is expected to shrink after 2025. Schools face the risk that each incoming class could be smaller than the last. The financial pressure will be relentless... Since 2020, more than 40 schools have announced plans to close, displacing students and faculty and leaving host towns without a key economic engine... Close to 400 schools could vanish in the coming decade, according to Huron Consulting Group. The projected closures and mergers will impact around 600,000 students and redistribute about $18 billion in endowment funds, Huron estimates... Pennsylvania State University, citing falling enrollment at many of its regional branches, plans to shutter seven of its 20 branch campuses after the spring 2027 semester... [C]ampuses in far-flung places, without brand recognition, are falling out of favor with students already questioning the value of a college degree. For example, while Penn State's flagship University Park campus saw enrollment grow 5% from 2014 to 2024, 12 other Penn State campuses recorded a 35% drop, according to a report tasked with determining whether closures were necessary. The article notes that "Less than half of students whose schools shut down before they graduate re-enroll in another college or university, according to a 2022 study." But even at colleges that remain, "The shrinking supply of students has already sparked a frenzied competition for high school seniors..." Some public institutions are letting seniors bypass traditional requirements like essays and letters of recommendation to gain entry automatically... Direct-admission programs, which allow students to skip traditional applications, are one potential response. Some 15 states have them, according to Taylor Odle, assistant professor of educational policy studies at the University of Wisconsin-Madison. He found in a 2022 paper that direct admissions increased first-year undergrad enrollment by 4% to 8%... And they don't require nearly as many paid staff to run, since there are no essays or letters of recommendation to read. Read more of this story at Slashdot.

  • NASA Livestreams the Rocket That Will Carry Four Astronauts Around the Moon
    by EditorDavid on 17/01/2026 at 6:34 pm

    "A mega rocket set to take astronauts around the Moon for the first time in decades is being taken to its launch pad," the BBC reported this morning. NASA is livestreaming their move of the 11-million-pound "stack" — which includes the Artemis II Space Launch System (SLS) rocket and the Orion spacecraft secured to it, all standing on its Mobile Launch Platform. Travelling at less than 1 mile per hour, the move is expected to take 12 hours. The mission — which could blast off as soon as 6 February — is expected to take 10 days. It is part of a wider plan aimed at returning astronauts to the lunar surface. As well as the rocket being ready, the Moon has to be in the right place too, so successive launch windows are selected accordingly. In practice, this means one week at the beginning of each month during which the rocket is pointed in the right direction followed by three weeks where there are no launch opportunities. The potential launch dates are: — 6, 7, 8, 10 and 11 February — 6, 7, 8, 9 and 11 March — 1, 3, 4, 5 and 6 April "The crew of four will travel beyond the far side of the moon, which could set a new record for the farthest distance humans have ever traveled from Earth, currently held by Apollo 13," reports CNN: But why won't Artemis II land on the lunar surface? "The short answer is because it doesn't have the capability. This is not a lunar lander," said Patty Casas Horn, deputy lead for Mission Analysis and Integrated Assessments at NASA. "Throughout the history of NASA, everything that we do is a bit risky, and so we want to make sure that that risk makes sense, and only accept the risk that we have to accept, within reason. So we build out a capability, then we test it out, then we build out a capability, then we test it out. And we will get to landing on the moon, but Artemis II is really about the crew..." The upcoming flight is the first time that people will be on board the Artemis spacecraft: The Orion capsule will carry the astronauts around the moon, and the SLS rocket will launch Orion into Earth orbit before the crew continues deeper into space... The mission will begin with two revolutions around Earth, before starting the translunar injection — the maneuver that will take the spacecraft out of Earth orbit and on toward the moon — about 26 hours into the flight, Horn said. "That's when we set up for the big burn — it's about six minutes in duration. And once we do this, you're on your way back to Earth. There's nothing else that you need to do. You're going to go by the moon, and the moon's gravity is going to pull you around and swing you back towards the Earth...." Avoiding entering lunar orbit keeps the mission profile simpler, allowing the crew to focus on other tasks as there is no need to pilot the spacecraft in any way. "The Artemis program's first planned lunar lander is called the Starship HLS, or Human Landing System, and is currently under development by SpaceX..." 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