As a software engineer, having a security mindset is essential to ensure you are developing reliable production-ready software. Having a security mindset goes beyond looking at application vulnerabilities and threat prevention, it's also about considering application integrity and system reliability. To build a security mindset, one should shift the security process left, making it part of the entire development lifecycle, and automate as much as possible. It's also important to think of the unhappy path when developing software, ensuring peer reviews of code and systems, keeping up-to-date on the latest practices, training software teams, and developing system redundancies. By following these tips, developers can develop a strong security mindset, resulting in secure and reliable applications over time.