The customer service is great! They are always quick to respond and help me solve my issues. I recently had an issue with my password expiring. A few days later they emailed me asking if I was having any problems again and offered to help me solve it. Great team! I've been a regular user of CISS for years now.
There's nothing that I dislike about this product. It's very easy to use, has all of the features you need, and is extremely reliable. We do not have any security concerns at our office.