The use of virtual private networks (the Virtual the Network of Private, the VPN) to navigate through the internet is becoming more and more popular with each passing day. VPN technology helps protect personal information, allows you to bypass the restrictions applied in some countries, opening access to blocked sites, and protects against viruses and malware. Today, several operators offer VPN services, most of the services are paid, and many of the operators accept cryptocurrency as payment. Free services can often be used for a short period of time (demo version).