The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks and it has many well known security issues.
PPTP has been the subject of many security analyses and serious security vulnerabilities have been found in this protocol. The known vulnerabilities relate to the underlying PPP authentication protocols used, the design of the MPPE protocol as well as the integration between MPPE and PPP authentication for session key establishment.
The list of vulnerabilities has grown over the years to encompass several unfixable problems. These problems leave users open to several types of attacks and privacy related issues. In short, don’t use PPTP if you care at all about security when using a VPN solution. Instead, opt for a more secure protocol such as OpenVPN. SSLPrivateProxy fully supports OpenVPN protocol, which is also supported by all modern operating systems and network devices.
OpenVPN is open source, therefore it can be freely audited by anyone for security flaws. It supports 256-bit SSL connection by default, which is considered military-grade and it has no known security flaws.
We care about your security and privacy and we take them very seriously, so we will drop support for PPTP protocol for our VPN services starting December 1st, 2018 in order to provide you military grade security and privacy.
If you are currently using PPTP protocol, I highly recommend you to switch to OpenVPN as soon as possible.