What are the xss defense measures?

xss defense measures: 1. Do not insert untrusted data in allowed locations; 2. Decode HTML before inserting untrusted data into HTML element content; 3. Before inserting untrusted data into common HTML attributes Attribute decoding; 4. URL decoding before inserting untrusted data into HTML URL attributes.

#XSS refers to the use of website vulnerabilities to maliciously steal information from users.

xss defense measures

The following rules are designed to prevent all XSS attacks that occur in applications. Although these rules do not allow arbitrary placing of untrusted data into HTML documents, But it basically covers most common situations.

1. Do not insert untrusted data in allowed locations.

2. Decode HTML before inserting untrusted data into HTML element content.

3. Decode attributes before inserting untrusted data into common HTML attributes.

4. Perform JavaScript decoding before inserting untrusted data into HTML JavaScript Data Values.

5. Perform CSS decoding before inserting untrusted data into HTML style attribute values.

6. Before inserting untrusted data into the HTML URL attribute, perform URL decoding.

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