Happy Safer Internet Day

Today is Safer Internet Day. While Learning Tree International is not an official sponsor nor national partner, we support the effort. As part of that support here are some ways you can help foster their 2020 mission of “Together for a better internet”. While Safer Internet Day is focused on younger net users, most readers […]
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How to Protect Yourself From SIM Swapping Attacks

Two-factor authentication is rapidly becoming a “must-do” in this era of rampant cyber threats. I’ve discussed and encouraged two-factor authentication here and in Learning Tree’s cyber security introduction course. But it must be done correctly. Two-step and two-factor authentication Some organizations use hardware tokens that display numbers that change every thirty seconds or so. Apps […]
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UNIX: Fifty Years and Counting

The UNIX Operating System has a long and influential history in computing and Brian Kernighan’s new book, UNIX: A History and a Memoir tells that story. I started teaching UNIX (and C programming) for Learning Tree back in 1984. A lot has changed since then including the advent of Linux, the move to PCs, and […]
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The Perils of Re-Using Passwords

Passwords will be with us for quite a while and so will password breaches, I’m afraid. Last week I received a notice that a site I use experienced a password breach. The email explained that the passwords themselves were encrypted, but that I should change my password on that site and any others where I […]
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Know Why You Want To Learn

Have you ever asked yourself, “What am I doing here?” while sitting in a class? I have and almost everyone I know has had that experience. When that happens, it is unlikely that you or I learned much. Learning and training professionals correctly advocate beginning a course or a class and even each chapter or […]
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