What are the ways of VPNs approach?

There are both paid and free VPNs. As for free VPN, all the Internet users are allowed to use it despite free VPNs are usually criticized for their low level of data protection. VPNs with open approach are suspected of collecting confidential materials of the users and even of these materials’ disposal to hackers who carry out attacks with such help. You shouldn’t forget that an approximate product must be supplied with customer service and constant updating.