Secure Access Tokens in Web Applications: A Practical Guide From the Field

I’ve spent years reviewing applications after security incidents, conducting code audits, and helping teams rebuild trust after token misuse exposed sensitive data. If there’s one pattern I keep seeing, it’s this: teams underestimate how important it is to secure access tokens in web applications. Access tokens sit at the center of modern authentication. If someone steals or misuses them, they can impersonate users, call APIs, and access protected data without ever knowing a password.