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Hej! I’m Karl. I write about and teach advanced web development, UI/UX, and security.
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Kolifink – my sole proprietorship specialized in secure web development
UV-Kollen: Swedish real-time UV-index and forecast service
OAuthOrNot: Building a pentest environment for OAuth 2.0 authentication
Using Android’s GPS and sensor permission to calculate the users height
Optimize 4 the win: How JIT compilation affects the execution time of a Java program
Flägermeisters: Lund University’s new CTF team
Creating the best social share package React has ever seen
Using Gmail & Google Sheets API to create a conference room booking bot
