Contact
Hi, I’m David Jonasson, a penetration tester based in Europe. I’m still early in the offensive side, but I bring over a decade of experience in IT—DevOps, QA, security engineering, tooling—you name it.
These days, I’m diving deep into GCP pentesting, offensive tooling, and building labs that mirror the messy, real-world ways systems get compromised.
While I’m specializing in cloud, I’m also open to web app testing, infrastructure assessments, and anything else that helps sharpen my edge.
If you’re looking for someone who combines hands-on IT experience with a growing offensive mindset, let’s talk. NDAs and strong security practices are standard.
You can use my PGP key for optional email encryption. Its fingerprint is: 6377 1899 9673 dfb6 294d e0c9 3481 7c00 456d dbc0
PGP ensures your message content remains private and confirms that replies genuinely come from me. However, email metadata (like sender and recipient addresses, subject lines) remains visible. For higher anonymity, consider encrypted messaging options.
Encrypted Messaging
I primarily use Threema, and I’m also available on Signal to accommodate varying preferences.
Threema
Threema is a privacy-first messaging app. Scan the QR code to start a conversation without revealing your email address or phone number. Please note, your profile information will become visible upon connecting.
Verify my identity with Unique ID: 5CB6Y5V8
Advanced users: To verify the QR code image, right-click (or long-press on mobile) to save it. Then, download its signature and verify both files using my PGP key.
Signal
Signal offers private, end-to-end encrypted communication. Scan the QR code above to start a conversation; your phone number will become visible.
You can request a safety number comparison to verify my identity.
Advanced users:
To verify the QR code image, right-click (or long-press on mobile) to save it. Then, download its signature and verify both files using my PGP key.
