Pentesting, System Hardening & IT Security Blog

Our passion for testing and defending infrastructures, applications and companies often leads us to the point where we want to share our thoughts and experience with the world. Here you can read all about our exploits and research and enjoy our posts, from useful howtos, to published CVEs, management strategies, new exciting tools and much more. As a provider of offensive and defensive IT services, we always welcome readers to reach out to us and ask questions or provide feedback, be it about our blog or our services, which include web-application and network penetration tests, system defense and hardening and management consulting, among others.

Now matter how much you want to secure your mail server, to be able to actually communicate with your customers and partners, you will have to face the ugly truth that enforcing STARTTLS might not be the best idea from a business perspective. Using opportunistic encryption, meaning to encrypt mail...

Whenever I'm connecting to a new remote server via SSH, I tend to verify the fingerprint to make sure that I'm actually connecting to my own machine. Usually it's not that big a deal as I'm simply comparing two strings, but what if those two strings are created with two different hashing algorithms?...

Client side access control is at hand, when the process or mechanism that enforces a users set permission is implemented on the users end of the application. The issue with this approach is, that a user has full control over their machine, and therefore the upper hand when it comes to protective mec...