Use Yahoo's Account Security settings to turn on Two-Step Verification.
Check for any unauthorized apps or third-party services that have access to your account. AI responses may include mistakes. Learn more
If you suspect your data may be included in such a list, you should check your email address on Have I Been Pwned to verify if it has appeared in known breaches. Additionally:
Sending mass phishing emails from legitimate Yahoo addresses.
Immediately update your Yahoo password to a unique, complex one.
Extracting personal info from saved emails for identity theft. Security Recommendations
The "30k" indicates the file contains approximately 30,000 sets of login credentials .