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Checks for MIME type sniffing protection
Rule IDsecurity/x-content-type
CategorySecurity
ScopeSite-wide
Severityinfo
Weight3/10

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Solution

X-Content-Type-Options: nosniff prevents browsers from MIME-sniffing responses, which could lead to security vulnerabilities. This is especially important for sites that allow file uploads or serve user-generated content. Simply add the header: X-Content-Type-Options: nosniff. This has no downside and improves security.

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Enable / Disable

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Disable this rule

squirrel.toml
[rules]
disable = ["security/x-content-type"]

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Disable all Security rules

squirrel.toml
[rules]
disable = ["security/*"]

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Enable only this rule

squirrel.toml
[rules]
enable = ["security/x-content-type"]
disable = ["*"]