Beyond the security risks, using shared cookies is a practice in futility. Netflix and other providers use sophisticated algorithms to detect unusual login patterns. If a single session cookie is being used by hundreds of IP addresses simultaneously, the account is flagged and the cookies are invalidated almost instantly. Furthermore, this practice is a violation of service terms and can lead to the permanent banning of the original account holder. Conclusion

Malicious software hidden within the archive that can log keystrokes or steal personal banking information.

The primary danger of downloading a .rar file from an untrusted source is the high probability of it containing . Because these files are often flagged by antivirus software due to the nature of their content (hacking tools or scripts), users are frequently told to "disable their antivirus" to get the cookies to work. This leaves the system vulnerable to:

If you have already downloaded or opened such a file, it is highly recommended to run a full system scan using a reputable Antivirus service and clear your browser's cached data and cookies immediately. Netflix says 'Please enable cookies to proceed.'