Downloading software like Hotspot Shield from unofficial sources such as in a .rar format poses significant security risks. While the official Hotspot Shield is a legitimate VPN service, unofficial "updates" or "cracks" hosted on third-party sites are often used to distribute malware. The Risks of "Sigma4pc" Downloads
Instead of risking a dangerous download, you can access Hotspot Shield safely through official channels:
Is my VPN connection secure and private? - Hotspot Shield Support
: Modified VPN clients can be designed to "eavesdrop" on your connection or route your traffic through malicious servers instead of protecting it.