Some of us may think we don't need VPN because we can access all website and VOIP service without any problem. It is not true.
More and more of us are using the internet to work from home or while we are on the go. We are also using the internet to manage our finances with online banking, to keep in contact with friends and family, and to shop for products and services. With so much of our lives depending on the internet it is hugely important that we keep private or personal data away from snoopers and prying eyes
Between Wi-Fi spoofing, Honeypot attacks, and Firesheep, public networks really are cesspools. Doing so many activities from an unsecured public network like a coffee shop Wi-Fi hotspot could put your bank data, your company's business, and your job at stake. VPNs are hugely popular with corporations as a means of securing sensitive data when connecting remote data centers. These networks are also becoming increasingly common among individual users—and not just torrenters. Because VPNs use a combination of dedicated connections and encryption protocols to generate virtual P2P connections, even if snoopers did manage to siphon off some of the transmitted data, they'd be unable to access it on account of the encryption.
Virtual Private Networks are a useful way of keeping personal or confidential data secure from unauthorised access. VPNs are used by offices and individuals alike and are often quick and simple to set up. What keeps your data secure are the security protocols that encrypt and encapsulate the data - these protocols allow your data to be sent securely over a private network, encoded and hidden from public view.
So whether you're a cubicle monkey, file pirate, or just don't want The Man getting all grabby with your personal data, virtual private networks are the best means of securing traffic short of copying it to a flash drive and driving there yourself.