Contact

For professional security work, research discussion, or collaboration, start with LinkedIn or GitHub. Include enough context to establish scope, authorization, and the outcome you need.

Public Links

• LinkedIn: linkedin.com/in/claesgyllhamn
• GitHub: github.com/kryssar
• Twitter/X: twitter.com/clgyl
• Hack The Box: app.hackthebox.com/profile/52379

Helpful First Message

• What system, application, or workflow you want reviewed.
• What authorization and scope boundaries already exist.
• Whether you need assessment, lab design, automation, or advisory help.
• Any deadline, disclosure rule, or reporting format that matters.

I do not accept requests for unauthorized testing, credential misuse, denial of service, or activity outside written scope.