John Opdenakker

Welcome to my personal Infosec blog.

Jan 13, 2020

SMS based 2FA is better than no 2FA

SMS based 2FA is better than no 2FA

Two layers of defense are better than one layer of defense. This seems logic. But every now and then I end up in a discussion - mainly on Twitter - where people tell

Jan 6, 2020

My weekly security newsletter

My weekly security newsletter

I've sent my first newsletter yesterday. It's a newsletter in which I capture the security news that caught my attention in the past week. It can be really anything security related that interests

Nov 29, 2019

100!

100!

Today marks 3 years since I wrote my first blog. When I hit the publish button this will be my one hundredth blog post. It's mainly the last one and a half year

Nov 28, 2019

Why password reuse isn't bad

Why password reuse isn't bad

If you're a security practitioner I guess this title grabbed your attention immediately. Because we all know that password reuse is a bad security practice and people shouldn't reuse passwords, right? Damn right!

Oct 30, 2019

The security risks of internet connected devices

The security risks of internet connected devices

Most people have a lot of internet connected devices at home. Obviously computers, laptops, tablets and smartphones, but it doesn't stop there. TVs, dishwashers, kettles, wearables, toys and even toilets all have smart,

Oct 29, 2019

Why you should keep your software up to date

Why you should keep your software up to date

Out of date or not regularly updated operating systems and applications put you at risk because they have a lot of vulnerabilities. Many of these vulnerabilities can be easily detected and exploited by

Oct 27, 2019

How to stay safe on social media

How to stay safe on social media

Using social media is not as innocent as it looks. There are several security and privacy risks lurking around the corner. It's important to be on your guard. In this post I'll give