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private browsing not so private

Private browsing is one of the most misunderstood terms in relation to the internet. I have met countless people who believe that it is a special mode that will protect them while surfing online. Unfortunately, private browsing is not the solution to online tracking. Private browsing is by far not as private as one would […]

terakoya @ Tokyo Tech

This week I had the honor to present at a seminar held by professor Suzuki Sakie for her students of mathematics at the Tokyo Institute of Technology. Although my research area is far from her’s (topology), she asked me to present at the seminar. Professor Suzuki called the seminar terakoya which refers to old Japanese […]

phone security – protect your digital soul

Smartphones are central to our lives. Everyone uses them and they hold every possible piece of information about us. They contain our digital soul and therefore phone security is an important topic. I am regularly shocked at how many people do not use a lock on them. On our phone we have browsing histories, photos, […]

U2F and second factors to get rid of phishing!

This week’s post in minimal security is about second factors. Apart from password managers, this is perhaps something you can apply that increases your security the most. As we have seen in my post about password managers, passwords can be stolen from websites. A universal second factor (U2F) registered with a website will protect your accounts […]

password manager – minimal effort; awesome security

This weeks topic in minimal security is on password managers. I have a few older post where I talk about passwords and tools or the importance of strong passwords. I want to reiterate password managers this week and give a clear recommendation. If you are curious why you should care about your password read my previous post. […]

secure email communication with pep

This week will be the most easy advice to follow so far. However, it might also be the most useless (so far). Email encryption is something that all of us should get better at. Until now the problem was that the tools are barely usable for non computer science graduates. Fear not! There is a […]

secure communication on your smartphone

Welcome back to minimal security! This post is about how to communicate securely with your friends on your smartphone. I am sure we are all worried about sending our cat videos through insecure channels. Fear not! There are messaging apps that will protect you with minimal effort on your side. There is a myriad of […]

browsing security one step at a time

This is the first post of my series on using computers securely for non-technologists. This post is about online advertisement. Apart from being a nuisance there have been also reports of distributing malware and viruses through advertisement channels on websites. As one can see, online ads are not only annoying but also a security threat. […]

ebook comic conversion the hard way – azw3 to epub

I recently wanted to convert an AZW3 comic to EPUB because I prefer EPUB as a free format. However, no matter how much I tried to get Calibre to do the conversion with various output settings, it always distorted or clipped the images. I tried to brute-force my way through the settings after deliberately choosing […]