http://bkg5ofjslnbyqvu55sjonpdyp3wmfsgq23u7vpk3wxn7ewgdeocpgwid.onion?page=article&article=The+Role+of+Burner+Phones+and+Virtual+Machines+in+Personal+OpSec.html
For example: Anonymous Account Creation : When signing up for a new online service, you could use a burner phone number to register, and then access the service through a VM running a privacy-focused browser like Tor. This combination ensures that your IP address, primary device, and main phone number are all shielded from tracking.