Top Web Application Threats in 2025

The web app threat landscape in 2025 is both familiar and unsettling. Long-standing issues like broken access controls and injection are still a problem, but new ones are emerging — such as the heavy reliance on APIs, mobile-client-driven APIs, and attacks powered by generative AI. These new realities are changing how attackers discover and exploit weaknesses. This article explores the most important threats you need to be aware of, why they matter now, and how your team can lower the risk with practical, prioritized steps. To ensure reliability, I’ve leaned on primary industry guidance (OWASP) and recent reports, so that every recommendation is grounded in what’s being done in practice today. What You’ll Learn The most common and dangerous threats in 2025 How APIs and client-side apps are reshaping the attack surface Real-world solutions that fit into modern development pipelines A short, prioritized checklist your team can start today Why 2025 is Different Two chang...