Designing Secure Web Applications From Day One
Security is hardest to add at the end of a project. It is much more effective to design it in from the beginning of a web application. That starts with simple habits such as validating input, encoding output, enforcing strong authentication and keeping dependencies updated.
On the architecture level, you should separate public and private services, protect administrative tools, encrypt data in transit and at rest, and apply the principle of least privilege to every component.
Regular security reviews, automated dependency checks and scheduled patching are small investments that prevent far more expensive incidents later.
