# Brennenstuhl on Security

> Exploring application security with a foible for agentic engineering and identities.

About the Author: 

Jan Brennenstuhl is a Principal Engineer with a track record of building and operating identity solutions used by millions of customers, balancing UX and security in high-stakes revenue funnels. 
Currently focused on making agentic SDLC more secure and efficient. Passionate about solving complex challenges at the intersection of security, usability, and automation.

## Main Categories
- [Application Security](https://www.janbrennenstuhl.eu/application-security/): Unearth the nuances of Application Security. Fortify your digital presence and combat cyber threats with advanced insights in this detailed guide.
- [Ethical Hacking](https://www.janbrennenstuhl.eu/ethical-hacking/): Unlocking the Power of Ethical Hacking: Safeguarding Digital Frontiers. Learn essential techniques & tools to fortify your cybersecurity defenses.
- [Identity & Access Management](https://www.janbrennenstuhl.eu/identity-access-management/): Dive into the realm of Identity & Access Management. Strengthen your digital defenses, ensuring impeccable control over user accessibility.
- [Software Engineering](https://www.janbrennenstuhl.eu/software-engineering/): Latest insights, trends, and best practices for secure and efficient software engineering with cutting-edge techniques and in-depth knowledge.
- [Software Security](https://www.janbrennenstuhl.eu/software-security/): Plunge into Software Security intricacies. Ensure robust, breach-proof software and defend against cyber attacks with these comprehensive guides.

## Key Articles
- [Shift Down AppSec](https://www.janbrennenstuhl.eu/shift-down-appsec/): Agentic engineering amplifies architectural entropy at machine speed. The answer is not more security gates but fewer decisions: shift security down into platforms.
- [AppSec in the Age of Agentic Engineering](https://www.janbrennenstuhl.eu/appsec-agentic-engineering/): Agentic engineering will reward AppSec teams that turn security from a post-commit gate into a pre-commit engineering capability, built hands-on with SRE and platform engineering.
- [The Purpose of JWT: Stateless Authentication](https://www.janbrennenstuhl.eu/purpose-jwt-stateless-authentication/): Establish stateless authentication with JWT. Uncover fundamental ideas of JSON Web Token, security concepts & commonpitfalls to avoid in this concise guide.
- [Single-Use JWT: The Power of Stateless One Time Token](https://www.janbrennenstuhl.eu/howto-single-use-jwt/): Discover JWTs as one-time tokens in secure authentication. Explore benefits, implementation, and real-world use cases. Explore Single-Use JWT!

## Important Pages
- [Disclaimer: No Employer Affiliation](https://www.janbrennenstuhl.eu/affiliate-disclaimer/): This is a private blog. I am not speaking for the company I work for or any company I worked for in the past.
- [About Jan Brennenstuhl](https://www.janbrennenstuhl.eu/about/): Jan Brennenstuhl is a principal engineer focused on application security, agentic engineering, and the intersection of security, usability, and automation.