Enterprise web application security: checklist and the mistakes that cost most

Attacks on Spanish enterprise web applications grew 38% in 2025. Most exploit known technical vulnerabilities that could be prevented with a 10-point development checklist.

• •The 3 most common attack vectors in Spanish enterprise apps: SQL injection in legacy APIs, weak authentication configurations (unhashed passwords, non-expiring tokens), and sensitive data exposure in logs or error responses.
• •GDPR requires Privacy by Design: applications handling employee or client data must implement encryption at rest and in transit, minimum necessary access, and access audit logging.
• •When to hire an external security audit: before launching an app with sensitive data, after a major architecture change, or if the dev team lacks OWASP Top 10 experience.

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