At Yahoo, you can manage your online experience by controlling cookies and personal data usage. Here are the steps to follow:
To opt-out of using cookies and collecting personal data for additional purposes, click ‘Reject all’ on our sites and apps. If you want more control over your choices, click ‘Manage privacy settings’.
You have the right to withdraw your consent or change your preferences at any time by visiting the ‘Privacy & cookie settings’ or ‘Privacy dashboard’ links. Learn more about how Yahoo uses your personal data in its privacy policy and cookie policy.
Source: https://consent.yahoo.com/v2/collectConsent?sessionId=3_cc-session_27b04da8-2289-43b4-8148-1b06ce538429