There are multiple ways you could ago about proving it. You could look at the timing of reviews. (Do they suddenly get an influx and then it drops?) You could look at the IP address of reviews to find correlations. You could look at the content of reviews. (Do they share similar characteristics that don’t match legit reviews?)
These, and other things, can be used to start the process. Then you enter into discovery and get their emails and account information. This is likely to get you absolute proof if there wasn’t enough already.
There are multiple ways you could ago about proving it. You could look at the timing of reviews. (Do they suddenly get an influx and then it drops?) You could look at the IP address of reviews to find correlations. You could look at the content of reviews. (Do they share similar characteristics that don’t match legit reviews?)
These, and other things, can be used to start the process. Then you enter into discovery and get their emails and account information. This is likely to get you absolute proof if there wasn’t enough already.