I have been using the solution for five years. 

I have been using  I will propose the use of that in order to add another layer of security to our network. for five years.

I have been using Palo Alto Networks Threat Prevention for approximately six years.

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

I have been using Palo Alto Networks Advanced Threat Prevention for one and a half years.

I have been using the solution for two to three years.

I have been using this solution for roughly five years.

We are currently using Palo Alto Networks Threat Prevention.

I have been using Palo Alto Networks Threat Prevention for eight years. 

I have been using Palo Alto Networks Threat Prevention for approximately 10 years.

I have been using this solution for a year and a half. 

Almost one year.

We have been using Palo Alto Networks Threat Prevention for a year.