Worth a look
This is not a bad place to start if you are feeling a tad insecure about your VPN service
If you could not be arsed reading the article at least ask your VPN service the following questions which the article is based on
" 1. Do you keep ANY logs which would allow you to match an IP-address and a time stamp to a user/users of your service? If so, what information do you hold and for how long?
2. What is the registered name of the company and under what jurisdiction(s) does it operate?
3. Do you use any external visitor tracking, email providers or support tools that hold information about your users/visitors?
4. In the event you receive a takedown notice (DMCA or other), how are these handled?
5. What steps are taken when a valid court order or subpoena requires your company to identify an active user of your service? Has this ever happened?
6. Is BitTorrent and other file-sharing traffic allowed (and treated equally to other traffic) on all servers? If not, why?
7. Which payment systems do you use and how are these linked to individual user accounts?
8. What is the most secure VPN connection and encryption algorithm you would recommend to your users?
9. How do you currently handle IPv6 connections and potential IPv6 leaks? Do you provide DNS leak protection and tools such as “kill switches” if a connection drops?
10. Do you offer a custom VPN application to your users? If so, for which platforms?
11. Do you have physical control over your VPN servers and network or are they hosted by/accessible to a third party? Do you use your own DNS servers?
12. What countries are your servers located in?"
Remember, Assume nothing, Believe nobody, Check everything.