Background: I am working investigation for a firm in US. Client is receiving harassing messages from multiple numbers (20). Numbers are all VOIP through Envoy and Level 3 (owned by Neutral Tandem IL LLC).
Goal: Catch a person sending multiple texts to client from different VOIP numbers. We believe they are using their own device. We believe responding to message with a link to a website may bait them into at least giving us their device information and [potentially] more information because they are sloppy.
Build Simple Website HTML5, PHP, Wordpress, Whatever.
Grab User Information:
1. User Agent, IP, Device, Geolocation, etc.
2. Request more user information like exact geolocation and Mac ID if possible
1. Header Title "Gotcha! - Biondino"
1. Display user information that is available with a message. "Thank you for being an idiot. Your VOIP numbers are all from Envoy and Level 3 (leased from Neutral Tandem IL LLC). Your USER AGENT information is: [Display User Info"
2. Play an .amr file of radio ad in the background
3. Display countdown timer to end at July 2, 2021 12pm with message "Subpoena filed. Your legal enema begins in..."