2026-07-13

OWASP Top 10 Explained: The Biggest Web Security Risks

The OWASP Top 10 is a globally recognized list of the most critical web application security risks. It helps developers and security professionals understand the vulnerabilities that attackers exploit most frequently.

1. Broken Access Control

Occurs when users can access resources they shouldn't.

Example: A normal user accessing an admin page by changing the URL.

2. Cryptographic Failures

Sensitive information is not properly encrypted.

Examples include weak passwords, outdated TLS versions, or storing plaintext credentials.

3. Injection

Attackers inject malicious commands into an application.

Common examples:

SQL Injection
Command Injection
LDAP Injection

4. Insecure Design

Applications are designed without proper security considerations.

Secure design should always be part of the development process.

5. Security Misconfiguration

Incorrect server or application settings expose systems to attacks.

Examples:

Default credentials
Open ports
Debug mode enabled

6. Vulnerable Components

Using outdated libraries introduces known vulnerabilities.

Always update dependencies regularly.

7. Identification and Authentication Failures

Weak authentication mechanisms allow attackers to compromise accounts.

Enable MFA whenever possible.

8. Software and Data Integrity Failures

Applications trust software or updates without verification.

Code signing and integrity checks reduce this risk.

9. Security Logging and Monitoring Failures

Without proper logs, attacks may remain unnoticed for months.

Centralized logging helps detect suspicious activity quickly.

10. Server-Side Request Forgery (SSRF)

Attackers force a server to make requests to internal or external systems.

This can expose internal services that shouldn't be publicly accessible.

Final Thoughts

Understanding the OWASP Top 10 helps developers build more secure applications and assists security professionals during vulnerability assessments and penetration tests.