Ad targeting data not shared with third parties without affirmative opt-in

Behavioral data — browsing history, content preferences, inferred demographics — is among the most sensitive data a community platform holds. Sharing it with ad networks (Google Ads, Meta Pixel, TikTok) without explicit opt-in violates GDPR Art. 6 (no lawful basis), GDPR Art. 7 (no consent), CCPA §1798.120 (right to opt out of sale/sharing), and eprivacy Art. 5(3) (tracking without consent). Regulators have issued nine-figure fines for exactly this pattern. A Facebook Pixel firing on page load without consent is not an implementation detail — it is an ongoing violation for every page view.

Initialize ad network SDKs and pixels only after checking consent — never on page load unconditionally. Wrap all ad SDK initialization behind a consent gate in src/lib/analytics/adNetworks.ts:

export async function initAdNetworks(userId: string) {
  const hasConsent = await getConsentStatus(userId, 'ad_targeting');
  if (!hasConsent) return;

  // Google
  gtag('config', process.env.GA_MEASUREMENT_ID!);

  // Meta Pixel
  fbq('init', process.env.META_PIXEL_ID!);
  fbq('track', 'PageView');
}

For server-side ad data sharing (Conversions API, audience uploads), add an identical consent check before every API call to the ad network — client-side gating alone is insufficient if server-side sharing continues.

• ID: community-privacy-controls.consent.ad-targeting-opt-in

• Severity: medium

• What to look for: Enumerate every relevant item. Check whether behavioral data (browsing history, content preferences, demographics, interests) is shared with ad networks or third-party marketing platforms. Look for integrations with Google Ads, Facebook Pixel, or similar. Verify each is covered by explicit opt-in consent. Check privacy policy for ad-related disclosures.

• Pass criteria: At least 1 of the following conditions is met. Ad targeting data is only shared with third parties after explicit user opt-in. Users can see which ad networks receive data and disable sharing in settings. Sharing defaults to off.

• Fail criteria: Ad targeting data automatically sent to third parties. No opt-in consent flow. Users cannot disable ad targeting. Privacy policy is vague about data sharing.

• Skip (N/A) when: Never — ad sharing requires consent.

• Detail on fail: Describe the unauthorized sharing. Example: "User behavioral data sent to Google Ads API without user opt-in. No setting to disable." or "Facebook Pixel fires on all pages with no user consent mechanism."

• Remediation: Require explicit opt-in for ad networks:

  // Only initialize ad SDK if user has consented
  async function initializeAdNetworks(userId: string) {
    const consent = await getConsentStatus(userId, 'ad_targeting');
  
    if (consent) {
      // Initialize Google Ads
      gtag('config', 'GA_MEASUREMENT_ID');
  
      // Initialize Facebook Pixel
      fbq('init', 'PIXEL_ID');
      fbq('track', 'PageView');
    }
  }
  
  // Share audience data only with consent
  async function shareUserWithAdNetwork(userId: string, adNetwork: string) {
    const consent = await getConsentStatus(userId, 'ad_targeting');
  
    if (!consent) {
      return { error: 'No consent for ad targeting' };
    }
  
    await sendToAdNetwork(adNetwork, userId, getUserTaxonomy(userId));
  }