Links to my public social media accounts:

Content from this weblog is hosted at:

I’m the chairman of the Foundation Against Hackable Elections.
In my professional life I’m an IT security consultant and ethical hacker and founded Secundity.

If you want to protect yourself against criminal hackers: read and follow the manual Watch Your Hack (also available in Dutch). Written bij Daniël Verlaan, with help of 5 other ethical hackers and yours truly.

About Sijmen Ruwhof

Independent IT Security Researcher / Ethical Hacker
This entry was posted in menu. Bookmark the permalink.