Convenience and security don't configure themselves.
The Ring on your front door, the Sonos in your study, the Nest learning your schedule — all of them are network endpoints. Most are on the same subnet as your banking laptop, running default credentials, with cloud accounts tied to a single personal email. Sentinel builds the architecture that locks all of it down.
Nobody set these up to fail. They shipped insecure by default, were installed by a contractor who left the same day, and haven't been touched since.
The ISP-provided router sitting in your utility closet is doing DHCP and NAT. That's it. No VLAN segmentation, no traffic inspection, no guest network with enforced isolation. Every device — your laptop, your Ring camera, your kids' tablets, your smart locks — is reachable from every other device on the network. One compromised IoT device is a foothold into everything else.
Smart TVs, thermostats, and security cameras run embedded Linux on firmware that hasn't been patched in two years. They communicate out to manufacturer cloud services using protocols that vary in security quality from poor to nonexistent. When these devices share a flat network with your primary workstation, a compromised Sonos speaker is a potential pivot point to your financial accounts. The risk isn't theoretical — it's the documented attack path.
Nest, Ring, Sonos, Lutron — every hub and camera ships with a default admin password. Most never get changed. The housekeeper knows the Wi-Fi password from 2019. The AV installer has the Lutron app still installed on his personal phone. Your ex-contractor can still access your front door camera via the login he set up. Default credentials on consumer IoT devices are one of the top five initial access vectors in residential network intrusions. It is not a theoretical threat.
Your Nest account, Ring account, August lock account, and every other hub is registered to the same personal Gmail you've had since 2008. No hardware MFA. Recovery codes in a notes app. That one email account is the skeleton key to every camera, every lock, every thermostat in your home. A credential stuffing attack — your email and password appear in a breach from a completely unrelated service — hands a stranger live footage of your house and the ability to unlock your front door.
One engagement. Documented, tested, and handed back to you with a runbook your household can actually use. No ongoing complexity — just a network that works the way it was supposed to from day one.
Every device category gets its own isolated network segment. IoT devices — cameras, thermostats, smart speakers, AV systems — are on a dedicated VLAN with strict inter-VLAN routing rules. They can reach the internet for their cloud services but cannot initiate connections to your primary devices. A compromised Ring camera cannot see your NAS, your laptop, or anything on your trusted network. The segmentation is enforced at the router level, not on the honor system.
We do a full scan of every device currently on your network. Most clients discover five to fifteen devices they had forgotten about — a printer from 2018 still broadcasting, a Zigbee hub the previous owner left behind, a smart TV in the guest room that nobody set up properly. Every device is identified, categorized, and either placed on the correct VLAN, reconfigured, or flagged for removal. You get a documented inventory: what's on your network, what it does, and what VLAN it lives on. The inventory is yours to keep.
Every hub account — Nest, Ring, Sonos, Lutron, August, whatever is in your home — gets its password rotated to a strong unique credential stored in your segregated household 1Password vault. Shared access for your spouse or household manager is set up through 1Password's sharing primitives, not by texting them the password. Former installers, contractors, and anyone who no longer needs access is removed. We document who has access to what. You are never again in a situation where you don't know who can get into your home systems.
Every cloud account controlling a camera, lock, or access system gets a hardware security key as the primary MFA method. Authenticator app as backup. SMS codes are disabled wherever the platform allows it. For platforms that do not support hardware keys, we configure TOTP via a dedicated authenticator app stored separately from your primary 1Password vault. The goal: no single credential compromise unlocks remote access to your home. Cloud account takeover is the most common way external actors gain access to residential smart home systems — MFA on these accounts closes the attack surface dramatically.
IoT devices receive firmware updates that address known vulnerabilities. Most homeowners never apply them. As part of your ongoing membership, Sentinel runs a quarterly firmware audit — we check every device on your inventory against the manufacturer's current firmware version, identify any critical security patches, and walk you through applying them or apply them directly where remote access allows. Unpatched firmware is the single largest attack surface in residential IoT networks. We close it systematically, not when something breaks.
Every household has rotating occupants — housekeepers, guests, housesitters, contractors. Each of them interacts with your network in ways that introduce risk. We produce a single-page household runbook: what the guest Wi-Fi password is and how to share it, what to do if a device stops working, who to call if something looks wrong, what contractors are and are not allowed to connect to. Clear, plain-language, laminated-on-the-fridge format. The person watching your house while you're in Geneva has everything they need to not accidentally expose your network.
Your smart home security isn't anyone's full-time job right now. It should be.
A client came to us six months after moving into a full-floor UES apartment. The previous owner had left behind a fully-installed smart home — Lutron whole-home lighting, Sonos throughout, two Nest thermostats, a Ring doorbell and intercom, August smart locks on three doors, and a Ubiquiti router the AV integrator had installed. The client had changed the Wi-Fi password. Nothing else had been touched. The Ubiquiti admin console was running with the default credentials the integrator had set. The previous owner's Ring account was still linked to the doorbell. The Nest thermostats were registered to an email address nobody in the household controlled. In total, the audit surfaced 47 networked devices — including eight nobody in the household knew existed. We spent week one on inventory and access recovery: reclaiming the Ring account, re-pairing the Nest thermostats, auditing the Ubiquiti config, and cataloguing every device by category. Week two was build: IoT VLAN segmented from the primary network, all hub accounts migrated to the client's 1Password vault with hardware MFA enabled, the Ubiquiti admin console locked down, firmware current on every device. The client received a full device inventory, a one-page household runbook for their housekeeper, and a quarterly review scheduled for ninety days out. Total time on-site: two days across the two weeks. The previous owner's access to every system in that apartment: zero.
Not a contractor who left the same day. Not a nephew who can't be reached. Not a Geek Squad ticket with no follow-through. Start with an assessment — we'll inventory everything on your network and tell you exactly what's exposed.
Smart home setup is included in all Sentinel membership tiers →