Nidhogg contributed to the spring-security repository by enhancing security documentation, focusing on password encoding practices. They updated the password-storage.adoc guide to recommend BcryptPassword4jPasswordEncoder over the older BCryptPasswordEncoder, providing developers with clearer, more secure guidance for password storage. This change aimed to reduce the risk of insecure defaults and improve onboarding for secure application development. Working primarily with Java and Kotlin, Nidhogg emphasized accuracy in technical writing and maintained disciplined Git workflows with proper sign-off. The work demonstrated a thoughtful approach to documentation, aligning with current security best practices and ensuring that guidance remains relevant and actionable for developers.