Web Security Best Practices for Businesses: Shielding Your Custom Applications

Custom web applications are primary targets for malicious actors seeking proprietary databases and user data. Implementing rigorous cybersecurity protocols at the code level is mandatory for modern compliant companies.

1. Input Validation and SQL Injection Defense

Never trust user inputs. Hackers exploit forms to run custom database queries. We sanitize inputs using type-safe frameworks like Zod and parameterized query engines, blocking raw SQL command injections at the gateway.

2. Secure Authentication with OAuth and JWT

Storing raw passwords locally is a high liability. We leverage OAuth providers (like Google, Microsoft Entra ID) and secure JSON Web Tokens (JWT) stored in HTTP-only, secure cookies, preventing sessions from being hijacked by malicious scripts.

3. Content Security Policies (CSP) and Cors Control

A Content Security Policy blocks browsers from loading scripts from unauthorized domains. Proper Cross-Origin Resource Sharing (CORS) configurations restrict browser API calls to trusted origins, preventing cross-site scripting (XSS) attacks.