Three Measures of Availability in Cybersecurity

In Learning Tree Course 468, Introduction to Cybersecurity, we talk about three core elements of cybersecurity: confidentiality, integrity, and availability. The latter probably gets the least attention. It gets limited attention in Course 450, Introduction to Networking, too. Since availability is an essential pillar of cybersecurity, we’ll look at three important availability metrics here: Uptime […]
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Password Cracking Just Got Easier

Cracking or discovering a simple password is not difficult, but it can be time-consuming. It just got a bit quicker. We discuss and demonstrate multiple ways to do that in Learning Tree Course 468 System and Network Security Introduction. One mechanism we do not demonstrate is the use of graphics cards (GPUs) to do the […]
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For the Love of Learning – Tech Valentines 2021!

Here at Learning Tree, we’re all about cultivating a Love of Learning in our attendees! We also know that, as an IT Professional, the traditional Valentine’s Day sentiments just won’t cut it for you. Never fear! You can skip the greeting card aisle this Valentine’s Day because Learning Tree’s got you covered with valentines that perfectly […]
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People May be Too Fearful of Phishing Now

For years security professionals have tried to convince family, friends, and fellow employees to be wary of unsolicited email messages. We’ve shared examples of phishing emails, sent out tests, and stressed the consequences of sharing confidential data. It all may have worked too well! SC Magazine reported last year that employees are ignoring legitimate business […]
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Update Your Browser Now

Developers of internet-facing applications are constantly working to find and fix security issues with those applications. Browser writers are no exception; in fact, they may be the most active. Sometimes they find vulnerabilities on their own or by using code analysis tools. There are many lists on the ‘net of such tools and https://phoenixnap.com/blog/vulnerability-assessment-scanning-tools is […]
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