Missing Content Type HTTP header

Docs > Datadog Security > OOTB Rules > Missing Content Type HTTP header

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Description

This publicly exposed API endpoint does not implement the Content-Type and X-Content-Type-Options HTTP headers. These headers declare the resource’s media type, preventing browsers from performing MIME type sniffing. Without the headers, browsers may interpret the content in unexpected ways.

Remediation

Implement the Content-Type HTTP header with the appropriate value.
Example header value:
```
Content-Type: application/json; charset=utf-8
```
Add the X-Content-Type-Options header with the “nosniff” value to prevent MIME type sniffing.
Example header value:
```
X-Content-Type-Options: nosniff
```