Protecting Your Digital Data While Selling or Buying a Home in NJ

Where a home sale leaks information

Most people think about security when they hand over the keys. The exposure starts much earlier. Listing photos go out to every portal and stay cached on aggregator sites for years. Showings put people you have never met in your bedroom and your home office. Smart doorbells, cameras, thermostats and locks are tied to your accounts. And the closing itself runs on email threads that carry bank details, Social Security numbers and wire instructions. Each of those is a place where a little discipline goes a long way.

I am not a cybersecurity professional, and this is not legal advice. It is the checklist I walk through with sellers and buyers across Union, Essex, Morris and Hudson counties so the sale does not cost them more than the house.

Sellers: before the photographer arrives

Walk every room the way a stranger would, looking for anything that identifies you. Names on bedroom doors and school artwork, diplomas, mail on the counter, a whiteboard with the family schedule, prescription bottles, financial paperwork on the desk, and screens showing an inbox or a bank balance. Photos get zoomed. Clear it all before the shoot, not after. My ten-minute declutter targets cover the same spots for a different reason.

Sellers: during showings and open houses

• Lock up the small valuable things. Laptops, tablets, passports, checkbooks, spare keys, garage remotes and medication go in a locked drawer or leave with you. Buyers tour with their agent, but a lockable spot removes the question.
• Decide what your cameras are doing. If you have indoor cameras or a doorbell that records audio, talk to your agent and your attorney before the first showing about whether they stay on and whether buyers are told. Recording people inside your home raises legal and ethical questions that vary by situation, and I would rather you ask than guess. At minimum, never point a camera at a bathroom or bedroom during showings.
• Reset the Wi-Fi password. If it has been shared with contractors, sitters and neighbors over the years, change it now and put visitors on a guest network. The Wi-Fi checklist covers what buyers will test.
• Hide the lockbox code from photos. It sounds obvious. It happens.

Stock photograph used for illustration; not a client property

Sellers: before closing

Every connected device that stays with the house needs to leave your account. Factory-reset the thermostat, video doorbell, cameras, smart locks and any hub, remove them from your app, and delete stored lock codes and garage remotes. Then write the buyer a one-page list: what the device is, that it was reset, and where the manual is. Buyers who paid attention to smart home features will ask, and a clean handoff is part of what they liked about the house. Cancel or transfer the monitoring contract, and forward your mail the week before closing so account statements stop arriving at an address you no longer control.

Buyers: the money moment

The single largest digital risk in a New Jersey transaction is wire fraud at closing. Criminals get into an email thread, watch the deal, and send a last-minute message with new wire instructions that looks like it came from the attorney, the title company or the agent. The money goes out and does not come back. The defense is simple and non-negotiable: verify wire instructions by phone, using a number you already have from your attorney review paperwork, never a number in the email itself. Be suspicious of any change in instructions, any urgency, and any request to keep it quiet. The FBI's Internet Crime Complaint Center tracks this type of fraud and is where a loss gets reported.

The rest of the buyer list is quieter. Send tax returns and bank statements through the lender's secure portal rather than as email attachments. Turn on two-factor authentication on the email account you use for the transaction. After closing, change every lock and code, reset any device the seller left behind, and set up your own Wi-Fi rather than inheriting the old network.

Both sides: the boring habits that work

Use a password manager so every account gets its own password. Turn on two-factor authentication anywhere it is offered. Shred paper you no longer need instead of leaving it for the movers. The basics published by CISA's Secure Our World campaign are short and worth ten minutes. In a busy month with a move to Hoboken or a purchase in Edison on the calendar, the habits you already have are the ones that protect you.

Sources reviewed September 19, 2026. This checklist is general guidance, not legal or cybersecurity advice. Confirm recording, disclosure and closing procedures with your attorney, and report suspected fraud to law enforcement.