Some things I can think of: * Read and consider whatever advice the government gives to people in witness protection. * For the victim and her parents: don't

Some things I can think of: * Read and consider whatever advice the government gives to people in witness protection. * For the victim and her parents: don't have any sort of IoT at home with a microphone. Especially digital assitants like Amazon Echo. * Don't conenct anything to your Wi-Fi unless essential. (Yes that means not giving the password to visits at the victim's house) * Get YubiKeys or similar for the victim and the parents. (SMS 2FA is garbage) * Tell the victim and the parents to never reuse passwords. * Have a VM to use misleading social media. Post as if the victim were in a different city, etc. * Use a VPN or Tor. (lower chances of finding the victim's location through their IP or some sort of data leak) * Use something like the Tor Browser even if you don't use Tor. * Don't have any cameras inside the victim's house. * For victim and parents: don't install anything that isn't really necessary. * Also for victim and parents: get a decent WiFi router with no known vulnerabilities and change the admin password. * Pay in cash. (Victim only. Avoid data leaks that might record where you shop) * Don't let others take pictures of the victim or her kids, much less share them. * Maybe use codenames when talking about location near the place the victim lives. * Don't use the victim's real address for anything that isn't absolutely necessary. Maybe set up a mailbox in a different city and use this addresses for most purposes. (Or the victim's parent's address) * Install a non-https blocker and use only DNSSEC over HTTPS or TLS just in case. * Use encrypted messaging for pretty much everything, including voice calls. * If possible, register the car and utilities under other people's names or addresses. * Again if possible, register utilities in another city under the victim's name. * Use email servers that use TLS for IMAP and SMTP. (Or just use webmail if through HTTPS) * Considering hiring a private investigator to stalk the stalker. Hopefully this will make him more cautious and maybe the PI can even catch the stalker commiting some crime.