# Content Warning Interstitial FAQ

When you see a **Content Warning** page while visiting a site hosted on Vercel, it means our systems detected signs that the site might put visitors' security or privacy at risk.

These warnings protect visitors from accessing a potentially harmful site.

## What this warning means

Vercel may show an interstitial page when our automated systems or trusted reports suggest that a site may be unsafe.

Common examples of potential risks include:

- Deceptive or misleading pages (for example, fake login forms or impersonation attempts)
- Unsafe downloads or embedded code
- Other signals that indicate risky or harmful behavior

You're in control: you can **close the page** to return to safety or **continue to the site** if you trust it.

## Why we use these warnings

Our goal is to help users make safer decisions when visiting sites hosted on Vercel.

Warnings appear when either automated detection or human review indicate a site might be deceptive, harmful, or insecure.

We don't share the exact detection details publicly - that information could be misused to evade detection.

However, we continuously refine our internal models to minimize false positives and ensure accuracy.

## What you can do

- **Go back to safety** - safest choice if you're unsure
- **Continue (not recommended)** - proceed if you're confident the site is legitimate
- **Report an error** - if you believe this warning is incorrect, you can [contact us through our review form](https://vercel.com/accountrecovery). Our team reviews all reports and removes warnings for verified-safe sites

## How we review reports

When a review request is submitted, our Safety team re-evaluates the site using automated checks and/or human review. If the site is confirmed safe, the warning is removed.

## Our commitment to transparency

We believe in protecting users and empowering developers with clear information.

Even though we can’t share specific security signals, Vercel:

- Uses content warnings to address trust & safety risks
- Offers clear next steps for both users and site owners
- Accepts flagging and feedback on content warning accuracy
- Works to continually improve our detection accuracy

## For site owners: appeal a content warning

If your site shows a **Content Warning** interstitial (the warning page before entry), it means our systems identified potential security or trust risks.

This section explains what that means, why it happens, and how to request a review.

### Why a warning might appear

A warning appears when a site or project exhibits behavior that could put users at risk.

While we don't disclose internal detection rules, common triggers include:

- Misleading branding or impersonation patterns
- Unsafe downloads or embedded code
- Unsecured HTTPS connections or certificate issues
- Redirects or cloaking that misrepresent the destination
- Multiple credible abuse reports

These warnings are not punitive - they're a proactive protection measure for the platform and its users.

### How to request a review

If you are the site owner and you believe your site was flagged incorrectly, you can request a re-evaluation using our secure form:

[Submit a review request](https://vercel.com/accountrecovery?userType=existing\&problemType=content-warning)

**Steps:**

1. Visit the form above and include:
   - The site URL or project ID
   - A short explanation of the site's purpose and your authorization to use material that may be trademarked or copyrighted
   - Confirmation that your content follows Vercel's Terms of Service
2. Submit the form
3. Our Safety team will review your case and follow up

If the site is found to be safe, the warning will be removed.

### Best practices to prevent future warnings

Adopt strong web-safety and transparency practices:

- Keep SSL/TLS certificates valid and up to date
- Avoid designs or domains that mimic other brands
- Clearly identify your organization or ownership
- Regularly patch software and dependencies
- Review redirects, forms, and scripts for potential misuse

### If you disagree with a review decision

If you still believe your site was incorrectly flagged after review, you can submit a **secondary appeal** within 14 days.

Reply to your review email and include new evidence or steps you've taken to address potential risks.

### Our broader commitment

Vercel's content warning system is one part of our overall safety approach.

We aim to balance openness with accountability - helping users make informed choices while allowing legitimate developers to build freely.

### Related resources

- [Vercel Terms of Service](https://vercel.com/legal/terms)
- [Vercel Fair Use Guidelines](https://vercel.com/docs/limits/fair-use-guidelines)


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title: "Vercel security overview"
description: "Vercel provides built-in and customizable features to ensure that your site is secure."
last_updated: "2026-02-03T02:58:48.641Z"
source: "https://vercel.com/docs/security"
--------------------------------------------------------------------------------