True security means understanding how systems break, not just running scanners

A technical analysis published on DEV Community argues that real vulnerability assessment goes far beyond automated scanning tools, which often miss the most critical flaws. The article explains that dangerous vulnerabilities frequently emerge from the interaction between system components that each appear secure in isolation, such as authentication and authorization checks handled separately. It highlights the common and costly confusion between authentication — verifying identity — and authorization — verifying permissions — noting that a valid token does not guarantee a user is permitted to access a specific resource. Business logic flaws, such as reusing single-use coupons or skipping mandatory workflow steps, are cited as high-impact vulnerabilities that require no sophisticated exploits. The piece concludes that a meaningful security report must include preconditions, reproducible steps, and demonstrated impact rather than simply flagging potential risks.