All you need to know about Trusted Types

In the ever-evolving world of web development, security remains a paramount concern. One crucial aspect is mitigating cross-site scripting (XSS) attacks, where malicious actors inject harmful scripts into a web application. To combat this threat, Trusted Types have emerged as a powerful defense mechanism. In this article, we will delve into Trusted Types, understanding their purpose, benefits, and provide real-world examples to showcase their effectiveness.

What are Trusted Types?

Trusted Types is a security feature introduced by the Google Chrome team to bolster web application security. It aims to prevent XSS attacks by controlling the types of values that can be assigned to certain DOM properties, thereby reducing the risk of injecting unsafe scripts into web pages.

The concept revolves around enforcing strict type checks when setting specific DOM properties, such as innerHTML, outerHTML, srcdoc, and more. By "locking down" these properties, developers can ensure that only trusted and sanitized data is allowed, effectively minimizing XSS vulnerabilities.

Benefits of Trusted Types

1. XSS Mitigation: The primary advantage of Trusted Types is its ability to thwart XSS attacks. By restricting the types of data that can be assigned to sensitive DOM properties, malicious scripts cannot be injected through commonly exploited entry points.
2. Developer-Friendly: Trusted Types offer a convenient…