During each step of the project’s development lifecycle, a number of security measures need to be carefully thought through.

Gather all of the security requirements for your application.

Standardize or establish benchmarks based on existing methods that have proven successful.

Safe coding standards need to be set up so that attacks like cross-site scripting and SQL injections can’t happen.

Clean up application replies to make sure that all output, return codes, and error codes are captured.

You shouldn’t trust client browser parameters, cookies, form fields, or hidden parameters unless they have been checked using strong cryptographic techniques.

Keep any sensitive session data on the server so that it doesn’t get changed on the client side.

Encrypt any pages that contain sensitive information and prevent users from caching them.

Implement session management.

Establish appropriate end-user accounts, and implement access rights management.

Limit access to the back end databases as well as the ability to perform SQL and operating system instructions.

When making application system calls, you should avoid making calls to the actual file names and directory paths of files. Make use of mapping as a layer for filtering.

Develop a centralized module for application monitoring and report generation.

Use the authentication methods that make the most sense for the situation to find and verify requests from users and the system.

Develop and conduct threat modelling.

An architectural framework for web application security should be developed and implemented.

Do a security risk assessment at each stage of development to figure out what security steps need to be taken.

Implementation of secure coding standards should be enforced.

Carry out several types of security checks, including stress tests, system tests, regression tests, unit tests, and so on.

Carry out a careful analysis of the code.

Before putting the system into production and after any major changes, a full security audit should be done.

Maintain a regular review schedule for the application logs.

Implement version control and a distinct environment for application development.

Put in place a firewall for web applications.