Showing posts with label web security. Show all posts
Showing posts with label web security. Show all posts

Friday, January 15, 2021

Lava Lamps and Security

Network and data security is something is emphasized throughout the year in my Introduction to Networking course. To spark discussion in the class, I often share show short videos about interesting security incidents as well as short videos about implementing security systems. One of the videos that we watched this week was about Cloudflare's use of lava lamps to generate random numbers for the purpose of encrypting web traffic. Here's the video. Full details of the process can be read here. I particularly enjoyed the explanation of the distinct between true randomness and pseudorandomness. 




I realize that the vast majority of readers of this blog don't have an obvious use for this video in their classrooms. That said, consider watching it anyway and think about all of the back-end technology that is in place to make it possible for students to safely use web-based tools.

Personal note: When I started this blog 13+ years ago it was to share neat things I was finding and trying in my classroom. Sometimes I just need to go back to those early days.

Friday, August 17, 2018

Great Tips & Reminders for Securing Your Mobile Phone

Many students use their smartphones more often than their laptops to browse the web, shop, and access important files. That's why we need to teach students to protect their mobile phones with the same level diligence used to protect their laptops. Common Craft recently published a good video about mobile phone safety and security. The video teaches viewers the common ways that mobile phone security is compromised and how they can protect their phones from security threats. The points in the video will be reminders to many viewers, but it could be new information to younger viewers or viewers who have just purchased their first smartphones.


Disclosure: FreeTech4Teachers.com and Common Craft have an in-kind relationship. 

Thursday, September 1, 2016

Reminder - Update Your Browser for Maximum Performance and Security

A couple of times this week I have had people contact me about web tools not working the same way on their computers as they did in one of my tutorial videos. I also had folks in a workshop this week run into the same problem. In all of those cases the problems were related to out of date web browsers.

Using an outdated browser can slow your online experience and make some web applications not work correctly. Outdated browsers can also make your computer more vulnerable to viruses and other dangers. A simple way to check if your browser is up to date is to visit Browse Happy. Browse Happy lists the six most commonly used browsers, the latest version of each, and links you to the download for the latest version.

If you use Chrome as your web browser you will see three red/orange lines in the upper-right corner of your browser when you are not using the most current version. To update Chrome simply quit it completely then restart your computer and it should automatically update for you. If that doesn't work you can update by opening the help menu then choosing "about" and running the update manually.
Click image to view full size. 


Another way to determine what browser you're using is to visit WhatBrowser.orgWhat Browser is a Google site that detects what browser you're using and displays that information right on the page in front of you.

Friday, July 11, 2014

Is Your Browser Updated? Here Are Two Easy Ways to Check

From time to time I'll receive emails from people who are having difficulty accessing the features a web tool that I have reviewed. Often, the cause of the difficulty is using a web browser that isn't updated. Using an outdated browser can not only slow your online experience, it can also make your computer more vulnerable to viruses and other dangers. A simple way to check if your browser is up to date is to visit Browse Happy. Browse Happy lists the five most commonly used browsers, the latest version of each, and links you to the download for the latest version.

Another way to determine what browser you're using is to visit WhatBrowser.org. What Browser is a Google site that detects what browser you're using and displays that information right on the page in front of you.

Sunday, June 30, 2013

Tips for Securing Your WiFi Network

Google's Good to Know site hosts a lot of good information about web technology basics. Good to Know covers topics like preventing identity theft, securing your passwords, and keeping your computer virus-free. This week securing your wifi network was added to Google Good to Know. The three minute video embedded below outlines the steps that you should take to secure your wifi network at home.