Key Takeaways
- Broken access control is among the most common and damaging web app vulnerabilities.
- Use secure frameworks, validated inputs, strong authentication and updated dependencies.
- Test regularly with code reviews, automated scans and penetration testing.
Web applications hold customer data, payments and business operations. The OWASP Top 10 lists the most critical web security risks. Here is a practical summary.
Common risks and protections
| Risk | Protection |
|---|---|
| Broken access control | Server-side authorisation checks on every request |
| Cryptographic failures | HTTPS, encryption at rest, proper key management |
| Injection (SQL, etc.) | Parameterised queries, ORM, input validation |
| Insecure design | Threat modelling early |
| Security misconfiguration | Hardened servers, disabled debug, secure headers |
| Vulnerable components | Regular dependency updates and scanning |
| Authentication failures | MFA, rate limiting, secure session handling |
| Integrity failures | Signed updates, secure CI/CD |
| Logging failures | Audit logs and alerting |
| SSRF | Validate and restrict outbound requests |
Security checklist
- Role-based access tested for every endpoint
- Two-factor authentication for admins
- Rate limiting on login and APIs
- Backups and disaster recovery
- Penetration test before major releases
- Data minimisation under DPDP Act
See also website security checklist.
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Explore Web App DevelopmentGet a Free QuoteRelated reading: Website Security Checklist · Web App Tech Stack 2026
Frequently Asked Questions
What is OWASP Top 10?
A widely used list of the most critical web application security risks, published by the Open Worldwide Application Security Project.
How can I secure my web application?
Use secure frameworks, validate inputs, enforce access control on the server, use MFA, keep dependencies updated and test regularly.
Do small web apps need penetration testing?
Any app handling personal or financial data benefits from periodic security testing.
What is broken access control?
When users can access data or actions they should not, such as another customer's records.
