There are hundreds of commercial VPN companies currently in the world, but the growing demand in the sector raises a lot criticism from experts about the lack of standards. Among the issues discussed are security and privacy concerns, lack of transparency and misleading potential customers.
In an interview with the south china morning post, leading experts in the field, have expressed many concerns. The article also mentions findings by British and Italian researchers, who warned that claims made by providers on security, privacy and even technical matters like download speed or number of servers "have not received a sufficiently detailed scrutiny".
The researchers found that many supposedly impartial VPN "review" sites were in fact linked to the companies they purported to be assessing.