I have been using Trend Micro Web Security for two to three years.

I have been using Trend Micro Web Security for three years. My company sells solutions provided by Trend Micro. It is not the solution's latest version that my company deals with currently.

I have been using Trend Micro Web Security for ten years. I am an integrator of the solution.

We have been using this solution for around three years.

I've used the solution for a while now.

I have been using Trend Micro VirusWall for six or seven years.

I have been using the solution for one and a half years.

I have been using the solution for four years. 

I've been using the solution for the past three years. 

I have been using this solution for about three years.

We've been providing Trend Micro Web Security for seven years now.

We implemented Trend Micro Web Security for a client approximately six months ago. I have been acquainted with it for a couple of months.

I've been using Web Security for around three years.