Subject: Action Required: Verify Your Account

Dear Valued Customer,

We have detected unusual activity on your account and need to verify your identity to ensure your security.

To maintain access to your account, please login to your account and complete the verification process.

Account Details:
- User: johndoe@contoso.com
- Last Login: 08/15/2025
- Location: Seattle, WA
- Device: Mobile

This is an automated security measure. If you believe this email was sent in error, please contact our support team immediately.

Best regards,
Security Team
Customer Service Department