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

  • EV Batteries Defy Expectations, Last Hundreds of Thousands of Miles
    by EditorDavid on 05/07/2026 at 12:34 pm

    247,000 miles on an EV battery? So says the owner of a U.K.-based used-car sales company that specializes in Evs, who tells the Wall Street Journal EV batteries keep performing well even after several hundred thousand miles. "They are proving themselves to be exceptionally reliable." After five years on the road, the average EV will still be able to drive up to 95% of its original range, according to Recurrent, a data-science company that provides a battery-monitoring tool for EVs — better than many in the auto industry expected... Potential new car buyers' fear of having to pay for a battery replacement is the number one reason they choose to steer clear of EVs, according to a 2025 survey from industry research firm AutoPacific. When early EVs hit the market, buyers' concerns were well-founded. Roughly one in 12 EVs built from 2011 to 2016 have had to have battery replacements. But new data shows that more modern EVs are doing better so far. Among EVs built from 2022 on, 0.3% have had battery replacements, according to a 2025 study from Recurrent. As battery technology has advanced, EVs have avoided problems like the ones that plagued the original Nissan Leaf when it hit the market in 2010, for example. Those cars lacked the battery-cooling technology that is in newer EVs, and they made headlines for wearing down quickly. Buyer perception hasn't quite caught up, according to Scott Case, co-founder and chief executive of Recurrent... The newest battery-powered EVs have lifespans comparable to internal-combustion-engine vehicles, even when driven more miles, according to Viet Nguyen-Tien, a research officer at the London School of Economics who focuses on Evs. Improvements in car batteries' chemical contents, battery-management systems and thermal regulation have been the difference in making batteries last longer and cost less, Nguyen-Tien said. Battery prices have fallen more than 90% since 2010, according to a BloombergNEF report from late last year. Industry analysts say battery-replacement costs are also improving as more EVs are designed for repairability in the long-haul. An out-of-warranty battery replacement can cost anywhere from $5,000 to $16,000, depending on the manufacturer, according to Recurrent. But many EV manufacturers have shifted to allow smaller components of their battery packs to be repaired, which can allow owners to avoid the full costs of a battery replacement, Case said. EV batteries aren't without their challenges, though. A battery that is frequently fast-charged with high power loses its range, on average, at twice the rate of a battery charged at a lower power, according to telematics company Geotab. Frequently charging a battery to 100%, or letting it rest at 0% for extended periods, can also reduce range long-term. And EVs regularly deliver less range in extreme cold or heat. The article also includes two new projections on EV adoption: "The share of new EVs sold is expected to nearly double to 11% of new-car sales in the U.S. by 2030, according to industry consulting firm AlixPartners." "Globally, EVs already make up 15% of new-car sales and are expected to form nearly a quarter of the global market by 2030, according to AlixPartners." Read more of this story at Slashdot.

  • Hobbit-like Humans May Have Scavenged Komodo Dragons' Leftovers to Survive
    by EditorDavid on 05/07/2026 at 8:34 am

    CNN reports: Prehistoric human relatives, nicknamed "hobbits" due to their short stature, may have been scavengers, rather than skilled hunters capable of taking down big game or building cooking fires, according to new research. The study adds to growing evidence that Homo floresiensis, which had a brain only slightly bigger than that of a chimpanzee, wasn't as advanced as scientists previously believed.... The researchers believe that much like how Komodo dragons hunt water buffaloes today, they were using their venomous bite to take down Stegodons — and after the scene was clear, Homo floresiensis swept in to cleave meat from what remained... The new study reinforces a long-held suspicion that Homo floresiensis is not a dwarfed form of Homo erectus but a descendant of a more primitive Homo habilis-like or Australopithecus-like form that arrived on the island more than1 million years ago, said Dr. Chris Stringer, a research leader specializing in human origins and paleoanthropology at London's Natural History Museum. Read more of this story at Slashdot.

  • New Google Ad Imagines America's 'Declaration of Independence' Written With AI Help
    by EditorDavid on 05/07/2026 at 4:34 am

    An anonymous reader shared this report from TechCrunch: Two hundred and fifty years after the signing of the Declaration of Independence, a new commercial from Google asks: What if the Founding Fathers had access to Google Workspace? With the tagline "Group project, but make it 1776," the ad depicts a largely unseen Thomas Jefferson mid-draft when he gets a nagging text from Ben Franklin, leading to a very Google-centric collaboration process. Edits are suggested in Google Docs, a meeting gets scheduled in Google Calendar and conducted remotely via Google Meet (with every single attendee apparently turning their camera off?), then the whole thing is finalized with e-signatures; cue the fireworks. Of course, since this is an ad from a tech company in the year 2026, AI has a role to play. The fictionalized founders use Google's "help me visualize" AI tool to try out different animals on the national seal, Gemini takes notes on the meeting, and the founders also ask the chatbot for advice before declining King George III's document access request. TechCrunch call it "very tongue-in-cheek," noting that at one point Samuel Adams even asks, "Can we settle this over beers?" And they argue that "the AI evangelism is relatively discreet when compared to many other recent ads." Read more of this story at Slashdot.

  • Are Wars Blurring Lines Between Corporate and National Security?
    by EditorDavid on 05/07/2026 at 1:34 am

    Subsea cables. Ukrainian power stations. Russian oil refineries. Even airports, water-desalination plants and Amazon data centers. They've all become targets in wartime, notes the Wall Street Journal, and around the world now arguments "are already brewing between companies and governments over new regulations and potential costs." In Germany, powerful associations representing private companies and municipal utilities have pushed back against new standards for physical protection, warning they could spell financial ruin. New Zealand's government has faced resistance from industry groups over a proposal to fine critical-infrastructure companies and their directors for cybersecurity breaches... A sign of how lines are blurring: The North Atlantic Treaty Organization's 32 countries last year agreed that as part of a pact to spend 5% of economic output on defense and security, 1.5% would go to military-adjacent needs including protecting critical infrastructure and networks. Spending targets range from cybersecurity and industrial capacity to railroads, bridges and ports needed for military logistics... "We need a wide concept of defense — defense is no longer just military," said Italian Adm. Giuseppe Cavo Dragone, NATO's top military adviser. Adding to the complexity, companies now need to protect the data networks that serve as gateways to critical infrastructure. Hackers increasingly target not just computer files to steal information but also systems managing vital functions like building access and factory control, remotely causing physical damage or enabling espionage. U.S. authorities in April warned that Iranian hackers were trying to disrupt American drinking-water systems by targeting computer equipment that connects hardware with software. A year earlier, suspected Russian hackers remotely manipulated valves on a Norwegian hydroelectric dam... Another challenge will be parsing jurisdictions and liability for assets that cross international waters or are damaged in combat — such as subsea data cables or energy pipelines. Turf battles between law enforcement and militaries are already complicating efforts... "The private owner can invest in redundancy, monitoring, and repair capacity, but only governments and militaries can really deter, patrol, attribute, or respond to hostile state activity," said Marc Glasser, who worked on cybersecurity and infrastructure security for three decades at the U.S. Department of Transportation and the Department of Homeland Security.... Companies say they need greater clarity from governments on what protections they will provide and subsidies to help them defend privately owned assets that provide a public good. Most governments don't provide incentives for companies to invest more than the minimum legal resilience requirements. The article notes that in May the chief executive of California's Port of Long Beach "launched a cyber-defense operations center to thwart tens of thousands of cyberattacks daily, which jeopardize computer systems and all equipment connected to them." The article also points out that the EU adopted new regulations requiring countries to reduce vulnerabilities, and new laws proposed in the U.K. now "seek to increase penalties for subsea sabotage, updating codes that date to when telegraph cables were first laid in the 19th century." Read more of this story at Slashdot.

  • New DNA Tech Identifies Soldier Killed in America's Revolution in 1780
    by EditorDavid on 04/07/2026 at 9:34 pm

    South Carolina's pine forests "have spent centuries hiding a secret as old as America itself," reports CBS News: In August 1780, British and American soldiers clashed there, leading to a terrible defeat for the Continental army [fighting for the 13 colonies rebelling against England]. Battlefield archaeologists Jim Legg and Steve Smith have been studying the site for decades, but recently, they made a shocking discovery: The sandy soil was home to several sets of remains buried in shallow graves. Metal buttons suggested the men had been Continental soldiers, but there was no other identification... About 2,000 Continental soldiers were killed, wounded or captured, and some men never returned home. Their families could only guess at their fates. But Legg and Smith's discovery, paired with an explosion in DNA technology, is changing what's possible. A set of remains, previously known only as 9B, has been identified as John Pumphrey, a young man from Maryland who enlisted in the Continental Army's 7th Maryland Regiment as young as 13... Pumphrey likely marched more than a thousand miles with the regiment. The unit fought in battles with then-Gen. George Washington in New Jersey and Pennsylvania... The Pumphrey family still exists today. The DNA that helped identify Pumphrey's remains came from three women: Pam Donahue, Karen Pumphrey Etchison, and Nancy Pumphrey White... In late June, members of the extended Pumphrey family came together to hear his story and say his name for the first time in centuries. His remains are interred in South Carolina, where he and the other soldiers were discovered, but the tombstone, once marked "Unknown," will soon have his name carved on it. Read more of this story at Slashdot.

  • 842,000 American Households Lost Power Today During a Heatwave
    by EditorDavid on 04/07/2026 at 8:34 pm

    As America began celebrating its 250th birthday Saturday, 842,000 homes reported power outages, notes ABC News. Figures from tracking site PowerOutage showed states in America's Northeast and Midwest were impacted by severe weather and extreme heat. That number, which will fluctuate throughout the day as crews work to restore power, is for households, meaning that the number of people impacted by these outages is likely to be much larger... Millions of Americans, however, will be contending with a heatwave that is blanketing much of the country, including in Philadelphia where the Salute to Independence Semiquincentennial Parade that had been set for Friday was canceled due to the dangerous heat wave, according to Philadelphia ABC station WPVI. Elsewhere, America's Independence Day Parade, which was scheduled for 10:30 a.m. on July 4 in downtown Washington, D.C. was canceled by organizers late Friday evening due to the extreme heat in the District of Columbia... Amtrak announced it will be canceling a number of trains due to heat-related conditions. The outages seemed to last throughout the day, with 790,103 household outages still in effect by 4:30 p.m. EST. Ironically, the power outages hit several American states that were among the country's original 13 freedom-declaring colonies, including New Jersey (143,072 outages), Pennsylvania (40,944 outages), and Virginia (27,392 outages). CNBC adds that America's largest power grid operator said Friday "it was under a federal alert to cut electricity consumption across its territory as it battled generator outages, massive overloading on its transmission lines and a surge in air conditioning use from prolonged sweltering heat." PJM said it told utilities to reduce electricity to customers who are under contract to reduce consumption during emergencies. PJM serves 67 million people in the Mid-Atlantic, South and Washington, D.C., area. Spot wholesale electricity prices in northern Virginia, home to the largest collection of data centers in the world, have surged beyond $2,000 per megawatt hour this week. That compares to about $40 per MWh when PJM is not in distress. 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