IVPN is a robust offering to say the least. They particularly emphasize on security. Although that sounds a little redundant, as any VPN would be focused on security, IVPN takes it to the next level.
Here's what they say as a kind of mission statement:
Your Privacy; Security is our top priority. Not all VPN services put your security first. Let us tell you why we do.
This is a great VPN for security. In all my reviews I have not come across a more security-minded VPN.