Protecting Email Addresses on Websites with Cloudflare

Tuesday, Jul 15, 2025 8:46 pm ET1min read

Cloudflare protects email addresses on websites from spammers by hiding them and requiring users to enable JavaScript to decode them. The company offers email protection as part of its services. Interested users can sign up for Cloudflare to protect their own websites from spam and other malicious activity.

Cloudflare, a leading internet security and performance company, has implemented a robust Content Security Policy (CSP) to bolster website security. This security measure is designed to detect and mitigate various types of attacks, including content/code injection, cross-site scripting (XSS), embedding malicious resources, and malicious iframes (clickjacking) [1].

Cloudflare's Content Delivery Network (CDN) is fully compatible with CSP. The company does not alter CSP headers from the origin web server, except when using Zaraz to ensure the Zaraz script is always running. Additionally, Cloudflare does not require changes to acceptable sources for first or third-party content or modify URLs, except for adding the /cdn-cgi/ endpoint and Cloudflare Fonts that rewrite Google Fonts URLs [1].

For websites proxied through Cloudflare, users can employ a response header transform rule to replace or add CSP headers. For websites hosted using Cloudflare Pages, users can set a _headers file to modify or add CSP headers. However, certain Cloudflare features may necessitate updates to the headers in the CSP [1].

Cloudflare's email protection service hides email addresses on websites, requiring users to enable JavaScript to decode them. This feature helps protect against spam and other malicious activities. Interested users can sign up for Cloudflare to safeguard their own websites from spam and other malicious activities [2].

References:
[1] https://developers.cloudflare.com/fundamentals/reference/policies-compliances/content-security-policies/
[2] (Provided topic)

Protecting Email Addresses on Websites with Cloudflare

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