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Let’s start with
the problem.

A scoped review, a more useful exercise, or an engineering challenge worth exploring. I’m open to professional conversations and collaboration.

Talk about the work.

For prospective projects and professional introductions, connect with Claes Gyllhamn on LinkedIn.

Message on LinkedIn

Follow the engineering.

Explore public repositories and the tooling behind the work. GitHub is the place for code and project context.

Find kryssar on GitHub

A useful first message.

  • The system, application, or workflow you’re working on.
  • The outcome you need: assessment, exercise, automation, or advice.
  • Any deadline or reporting requirement that shapes the work.
  • The agreed authorization and scope, if you’re requesting testing.

Please keep credentials and sensitive operational details out of an introductory message. Security testing requires written authorization. You can also find my public profiles on Twitter/X and Hack The Box.