Author Archives: Jack Wallen

If employees don’t digitally sign all outgoing emails, Jack Wallen says your company and customer base is at risk. He explains why signing emails has reached critical importance. Continue reading Stop procrastinating: Signing emails is now a necessity→

To encrypt email and files, you need to know how to work with PGP keys. Get up to speed on generating, exporting, and importing encryption keys with GnuPG. Continue reading How to work with PGP keys using GnuPG→

Zero Days is a documentary by Oscar-winning filmmaker Alex Gibney about the cyberwarfare Pandora’s Box that was opened with the Stuxnet malware. Find out why Jack Wallen highly recommends the film. Continue reading Zero Days: Why the disturbing Stuxnet documentary is a must-see→

The Android Security Update for June 2016 includes a number of critical issues. Jack Wallen has the highlights, and shows how to find out if your device is up to date. Continue reading Android June 2016 Security Bulletin: What you need to know→

You may have installed the Maxthon browser on your mobile devices. If so, here’s why you should remove it. Immediately. Continue reading Maxthon browser is a wolf in sheep’s clothing→

If you want to set up an in-house authentication system to use for ownCloud, WordPress, and the like, find out how to install privacyIDEA on your Ubuntu server. Continue reading How to install the privacyIDEA authentication system on Ubuntu→

When you need to enforce password changes for users on Linux machines, the chage command-line tool is a must-have. Continue reading How to manage Linux password expiry with the chage command→

There are upsides and downsides to banking via text. Jack Wallen highlights the security-centric cost of text-based banking. Continue reading Mobile banking: Is it worth the security risk?→

Collaboration and remote sync are a necessity for developers. Learn how to make the process easier by using SparkleShare to connect to a GitHub repository. Continue reading How to install SparkleShare on Ubuntu and connect it to GitHub→

One device to hand out two-factor authentication tokens isn’t always enough. Learn how to use Authy on multiple devices so those tokens are always at the ready. Continue reading How to set up Authy on multiple devices for more convenient two-factor authentication→