How it Works

Connect the CUJO device to your existing network and protect all of your devices. Install the CUJO app on your phone and control your network.

CUJO is simple and secure.

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Cujo connected to router

Simple To Start

CUJO takes just a few minutes to start. Plug the CUJO device into your router and follow step-by-step guide on your CUJO app.

CUJO works with the following network setups:

  • WiFi router
  • Modem and router as separate devices
  • Modem and router as one device
  • Wireless extender or access point in addition to your router

If you have a different setup, please contact us at

Read setup guide here.

Cujo home network protection

How CUJO Secures My Home

CUJO analyzes your local network traffic data locally and in real time. It then sends statistics on that data to the cloud for further analysis. For your privacy as well as performance reasons, we don’t send the contents of those packets to the cloud. If a threat or suspicious activity is detected, CUJO will tell the cloud what it has blocked so you can receive a notification on your mobile app to confirm it.


Cujo app on mobile phone

Our Mobile App

Through CUJO’s mobile app you can…

  • Control and monitor all devices on your network
  • Receive instant threat notifications
  • Control Internet access for select devices.

In addition, you can manually override any blocks automated by CUJO so you’re in full control all the time.

Tech specs

Certifications FCC, ETL (similar to UL), WEEE, CE (pending RoHS/REACH), Safety Cert
Dimensions (W x H x D) 4.875” x 4.875” x 5.75”
(124mm x 124mm x 146mm)
Weight 0.831 lbs (without packaging)
Features Internet security for all devices
Parental Controls
Bridge or DHCP server mode
Customizable DHCP settings (Subnet, IP range, Lease time, Static IP, DNS)
Live Video Customer Service support
Security Features Safe Browsing (IP/DNS)
Command & Control blocking
Unauthorized access blocking
Antivirus and Antimalware
Behavior Analysis
Local+Cloud security layers
DoS attack protection
Protection of all devices on the network
(like PC,, Phone, TV, Camera and etc.)
Management Features CUJO App: iOS/Android for Phones
Minimal requirements:
iOS 8.4.1, screen 640×960
Android 4.1.1, screen 540×960
Ambient Temperature 32°F – 104°F
(0°C – 40°C)
Processor Dual Core 1GHz
Flash Memory 4GB Flash
Acceleration Cryptographic Hardware Acceleration
Ports 2 x 1Gbps Ethernet Ports
External Power Supply Input: 100-240V ~ 0.3A 50-60Hz
Output: 5V DC 2.0A Max
Plugs: US/CA, EU, AU/NZ, UK

Get CUJO for $199

No subscription fees. 30-day money-back guarantee. Ships next business day.