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 Military Disables Ad Trackers On Devices To Protect Troops
    by EditorDavid on 07/09/2026 at 1:34 am

    Slashdot reader DeanonymizedCoward writes: Reuters reports that the US Military is disabling ad tracking on devices, to prevent adversaries from buying publicly-available tracking data to assist in targeting troops. Military officials say that they have disabled trackers on a variety of computers and mobile devices, according to letters released on Friday by Sen. Ron Wyden, and following reports that commercially-available tracking data has been used to target troops in the Middle East.... Wyden said in a statement that it was clear that the military's efforts "have not been effective at neutralizing this threat." U.S. Representative Pat Harrigan, a North Carolina Republican, said that U.S. enemies "should not be able to pull out a credit card and buy information that helps them track American troops." Rep. Harrigan remains silent as to the larger question of whether the general public should be able to pull out a credit card and buy information that helps them track anyone they please. "The Pentagon said in an email it would respond to the lawmakers directly," Reuters reports: The Army said in a statement that advertising IDs had been blocked on Windows computers "since before 2021" but that Android and Apple mobile devices had only had it disabled by default "since at least February 2026...." The effort to reduce the location data generated by smartphones comes as military officials weigh increasingly strict restrictions on phone use overall. In July, Reuters reported that some deployed personnel in the Middle East could be ordered to surrender their phones amid concerns that mobile videos they were posting to the internet were helping Iran target American bases in the region. Read more of this story at Slashdot.

  • Where a Massive Solar Storm Could Take Down the US Power Grid for Millions
    by EditorDavid on 06/09/2026 at 11:34 pm

    A new study published Friday in AGU Advances "depicts the most advanced picture yet of how a rare but massive solar storm could affect some US industries and electric systems more than others," reports CNN. "During a 250-year solar storm, the East Coast would have widespread potential for grid failure." Researchers modeled what a Carrington Event — a 1-in-150-year geomagnetic storm or even rarer — could mean for the modern day. They estimate the US economy would lose about $1.5 billion to $2 billion per day from direct and indirect costs, as millions of people face power outages. The findings show the most vulnerable areas are the Northeast and the Northern Plains, especially locations at higher latitudes. No one knows when the next big storm will hit. While the most severe geomagnetic storms are labeled as once-in-a-century or rarer, these events don't follow a fixed schedule. "That timing only averages out on very long timescales," said Anna Kelbert, a geophysicist at the Harvard-Smithsonian Center for Astrophysics, who was not involved in the study but previously studied solar storm effects on power grids. "The event can occur at any time, as soon as a week from now, or centuries later...." [Shawn Dahl, service coordinator at the Space Weather Prediction Center operated by the National Oceanic and Atmospheric Administration in Boulder, Colorado], said the sun is now coming down from a period of heightened activity, which is also when some of the biggest storms to hit Earth have occurred in the past. "We still need a lot of work to be ready...." "We haven't really seen events like this size in the modern era, where we've had all of this high technology and we've had the power grid of this size," said Ed Oughton, researcher at George Mason University and lead author of the new study... Because the US grid's actual structure is proprietary for security reasons, the team used engineering models to create various network and transformer setups including the 10,464 substations and 16,256 transmission lines found across the country... The grid structure also contributes to higher risk in some areas. For instance, the eastern US is linked together in a single grid interconnection. A voltage issue in Maine, if not isolated early, could cascade through the grid to Washington, DC. The West works similarly, whereas the Texas interconnection operates mostly within the state... Power is restored over time depending on any alternative electrical paths that could bypass the substation or availabilities of spare transformers, for instance. "This nationwide analysis shows that we are currently ill-prepared to face a major magnetic storm, and that the societal impacts would be catastrophic," Kelbert said. "The study estimates power disruptions for 5.1 million people and 135,000 businesses," according to the article, and "The outages could last from hours to days to weeks depending on the damage and resources available to get back online, said Oughton." Read more of this story at Slashdot.

  • TiVo Will Start Charging Fees For Its Automatic Commercial Break-Skipping Feature 'SkipMode'
    by EditorDavid on 06/09/2026 at 8:34 pm

    TiVo is notifying customers about changes to "one of its longest-standing and most popular DVR features," reports the blog Cord Cutter News: Starting November 2, 2026, the current version of SkipMode that allows users to jump over commercial breaks with a single button press on the remote will no longer be available. The company is instead preparing to test a new paid add-on called Premium Auto Commercial Skip. SkipMode has been a core part of the TiVo experience for years. After a supported show finished recording, the service added markers that let viewers leap from the end of one program segment directly to the start of the next, bypassing the ads in between. On newer TiVo Experience 4 devices, users could even set the feature to automatic so commercials were skipped without any remote interaction. The feature was limited to popular prime-time programming on major networks, typically appearing a short time after a show aired. Under the new plan, that one-button and automatic functionality will disappear from the standard service. Viewers will still be able to skip commercials the traditional way by using the 30-second skip button or the fast-forward control on their remotes. Those manual methods have existed on TiVo boxes for more than two decades and do not rely on the company's commercial-detection data. In November, TiVo will offer a 30-day free trial of the new Premium Auto Commercial Skip service. After the trial ends, customers who want to keep the automatic or one-button skip capability will need to add it to their accounts for an extra monthly fee. The company has not yet published the price. Thanks to long-time Slashdot reader AmiMoJo for sharing the article. Read more of this story at Slashdot.

  • Flock Offered Webinar Teaching Cops How to Surveil 'No Kings' Protesters
    by EditorDavid on 06/09/2026 at 5:34 pm

    Thursday 404 Media reported that Flock taught America's cops "how they could surveil the No Kings protests" against President Trump (as well as "small parades") in a webinar last year that described "using a mix of Flock's technology and law enforcement's own databases." In the webinar, Flock's director of market management Caity Peak explains how real time crime centers — which are police surveillance centers that utilize Flock cameras and other surveillance cameras — can be used for emergency response, but can also be used to surveil "established events" like 4th of July fireworks displays, parades, bike races, Mardi Gras, and protests. The webinar shows just how routine the idea of always-on surveillance has become, and how casually it is used during extremely innocuous events. Peak explains that police can use FlockOS, a software platform that combines Flock's automatic license plate readers (ALPR), drones, gunshot detectors, 911 data, and other surveillance cameras (including ones Flock does not own) into a "single pane of glass" or single piece of software to look at various types of surveillance in one place during both emergencies and relatively mundane events in a city or town. "Imagine that you're an incident commander, and you're working this No Kings Protest," Peak explains while a dashboard shows a series of surveillance tools overlaying the city of Denver. "If I'm somebody assigned a traffic post that's working this No Kings Protest, I really don't have time to go in [...] and look at all these places [for different intelligence]. This is an example of viewing all of that in one place...." The dashboard Peak shows includes traffic information, a "response plan" for the protest, the floor plans of nearby buildings, as well as a series of video feeds of both outdoor-mounted cameras and cameras inside businesses and government buildings. 404 Media and the Electronic Frontier Foundation previously showed that police have specifically used Flock cameras to monitor the No Kings protests and other First Amendment-protected activity... This webinar shows this type of surveillance is not anomalous, and is specifically taught by Flock. The webinar also shows that Flock's latest public stance — that its ALPR cameras are noninvasive technology, that they take only static images at a single place and time, and that they are primarily used to solve the worst crimes — is wildly misleading. Flock has time and time again pitched itself to police as a sort of operating system to solve crime and do real-time surveillance and predictive policing. ALPRs are just one part of this broader surveillance apparatus that Flock has created, markets to police, and teaches them how to use. Read more of this story at Slashdot.

  • UN Votes To Encourage Map Projections More Accurately Reflecting the True Size of Continents
    by EditorDavid on 06/09/2026 at 2:34 pm

    The United Nations has an announcement. "The UN General Assembly has voted overwhelmingly to encourage governments, schools and tech companies worldwide to stop using maps that make Africa look far smaller than it really is." By 164 votes to one, Member States on Friday endorsed a resolution promoting map projections that more accurately reflect the true size of continents — the culmination of an African-led campaign against the 16th-century Mercator projection, still the most widely used map in the world. The United States cast the sole vote against, dismissing the initiative as part of a "radical ideological project." Six countries — Estonia, Georgia, Lithuania, Moldova, Serbia and Ukraine — abstained. The resolution does not ban the Mercator projection or impose a replacement. Instead, it encourages governments, schools, international organizations and technology companies to use the Equal Earth projection and other so-called equal-area maps when relative size matters, and to teach the limitations of any flat map in representing a spherical planet. Behind that seemingly technical debate lies a larger argument about history and power: whether a map designed for European sailors in the 16th century has, over generations, distorted not only geography but perceptions of a whole, vast and complex continent... [With Mercator maps] landmasses appear increasingly enlarged the farther they are from the Equator. Greenland, for instance, can look roughly comparable in size to Africa, even though Africa is about 14 times larger. Northern Europe and North America are similarly magnified, relative to equatorial regions. Despite its original navigational purpose, Mercator remains common in educational, media, digital and official materials. The resolution says those distortions have contributed to the "symbolic minimization" of Africa and perpetuated an unbalanced view of the world... Equal-area maps do not make Africa larger; they remove the exaggeration Mercator gives landmasses closer to the poles. The UN notes that hours before the vote, France's foreign minister announced the country was planning to abandon Mercator for its maps of the world. Read more of this story at Slashdot.

  • Private German Rocket Makes History, Reaches Orbit From European Soil
    by EditorDavid on 06/09/2026 at 11:34 am

    "No rocket had ever reached orbit from Western European soil — until today," reports Space.com. DW.com reports that a Spectrum space rocket from German company Isar Aerospace launched today from the Arctic Norwegian spaceport at Andoya: "Germany has spaceflight capabilities," said the country's Ministry for Research, Technology and Space on X, praising a "milestone that impressively demonstrates our country's innovative strength and technical expertise". This was the German company's second attempt to launch the Spectrum rocket into space. The first attempt, which took place 18 months ago, was unsuccessful. The Spectrum rocket is designed for small and medium-sized payloads. It carried five smal satellites and an in-flight technological experiment, the company said. According to Isar Aerospace, the launch was for "both the vehicle's qualification mission and its first flight carrying payload." The move is believed to bring Europe closer to being able to offer satellite flights from its own territory. Several countries voiced interest in the growing market of commercial space missions, including Britain and Sweden... Isar is also working on the development of a second launch site, located in Canada. The company said that while the US launched 198 rockets last year, Europe's tally was just eight. Isar's goal is to produce some 40 rockets a year. Although the rocket is not yet ready for mass production, Isar has already received orders through 2028. Today's launch webcast was produced in collaboration with NASASpaceflight, notes Space.com. And they note that Spectrum chief engineer Nikolaos Perakis says"This is just the beginning... I'm really looking forward to the next steps." Reuters quotes this statemnt from Norway's minister of industry and commerce, Cecilie Myrseth. "The fact that we can now launch satellites from Andoeya strengthens Norwegian and European security in the turbulent times we live in." 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