Blitzscaling Security: Diary of a Security Engineer by Sparc Flow chronicles the journey of Alex, the inaugural security engineer at a rapidly growing startup. The narrative delves into Alex’s experiences, from the interview process to the initial months of establishing security protocols. It highlights interactions with various teams, communication challenges, vulnerability prioritization, and the tension between conventional security wisdom and practical application. The book emphasizes pragmatism and first principles, aiming to debunk prevalent myths in the security field that may be counterproductive.