How Does a VPN Work?
Essentially, a VPN creates a data tunnel between your local network and an exit point at a different location that could be thousands of miles away.
It redirects internet traffics, hides your IP address and encrypts all the data sent or received. With advanced encryption techniques, VPNs scramble data and make the data unreadable. In this sense, a VPN prevents anyone else on the network from eavesdropping on your internet activity.

Virtual Private Network Security

Security is the main reason why corporations have used VPNs for years. There are increasingly simple methods to intercept data traveling to a network. WiFi spoofing and Firesheep are two easy ways to hack information. A useful analogy is that a firewall protects your data while on the computer and a VPN protects your data on the web.

VPNs use advanced encryption protocols and secure tunneling techniques to encapsulate all online data transfers. Most savvy computer users wouldn't dream of connecting to the Internet without a firewall and up-to-date antivirus. Evolving security threats and ever-increasing reliance on the Internet make a Virtual Private Network an essential part of well-rounded security. Integrity checks ensure that no data is lost and that the connection has not been hijacked. Since all traffic is protected, VPNs are preferred over proxies.