How Code Review Can Become Your First Line of Defense Against Security Breaches

Mark Twain once said, “It’s not what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.” In cybersecurity, few assumptions are more dangerous than believing infrastructure is secure simply because it was deployed successfully. The reality is that many breaches don’t stem from sophisticated zero-day exploits. They often result from misconfigurations, exposed secrets, and human errors introduced through code. This post explores how code review, especially Infrastructure as Code (IaC), has become a practical and impactful way to strengthen security posture. It helps identify vulnerabilities before they escalate, supports a culture of accountability, and contributes to reducing standing human access to production systems.