The Developer’s Guide to JWT Storage

JSON Web Tokens (JWTs) are compact, self-contained tokens used to securely transmit information between parties while maintaining data integrity. Many authorization providers use JWTs to provide a tamper-proof way of identifying an authenticated user in an application and checking what they're authorized to do. Unfortunately, securely storing JWTs is often overlooked, which can expose some serious vulnerabilities. For example, cross-site scripting (XSS) attacks can steal JWTs, letting malicious actors impersonate users and access sensitive data. Therefore, you need to store JWTs securely to protect users and potentially save your organization millions by preventing data breaches. This guide will explore essential JWT security considerations, popular browser storage methods, and their benefits and drawbacks, best practices, and troubleshooting tips for working with JWTs. By the end, you'll be well-informed about the available JWT storage methods and choose the most appropriate solution