To determine if surfshark VPN is a legitimate copy,consider the following factors:

1. Legal Registration: Check if surfshark is registered in the U.S. and if they have legal subtitles or a registered trademark.

2. Customer Support: Ensure they offer 24/7 support, including live chat and a dedicated team.

3. Security Features: Look for robust encryption, multi-factor authentication, and updates to safeguard against malware and phishing.

4. Ease of Use: The service should be user-friendly, accessible via a web interface or mobile app, with a clear interface.

5. Cost Structure: While surfshark is free, confirm that there are no hidden fees for premium features.

6. Technical Quality: Ensure the software is up-to-date and well-maintained, with a focus on security.

7. User Reviews: Check for positive feedback on the service, especially from satisfied users.

8. Support Options: Consider features like live chat or ticket support for assistance.

9. Legal Structure: Verify if surfshark is legally incorporated, which can indicate legitimacy.

10. User Experience: Assess the interface for ease of access and navigation.

By evaluating these aspects, you can determine if surfshark VPN meets your security and reliability needs. If it does, it's likely a legitimate and effective VPN service.