Brass Horn Comms Onion3g

Brass Horn Comms - Onion3G

Surveillance Frustrating Mobile Internet

Offering Tor or VPN services over-the-top of a normal Internet connection is the most common way for people to connect, however misconfigurations and exploits can result in leaked meta data or clear net browsing that can compromise your privacy.

The Onion3G design is a closed network between your 3G device/MiFi/modem and the Brass Horn Comms Tor bridges, this may make the collection of Internet Connection Records (and by extension other forms of bulk surveillance) less effective.

This is achieved by only issuing private IP addresses to remote endpoints which if 'leaked' won't identify you or Brass Horn Communications as your ISP. (Furthermore your computers aren't technically connected to the Internet so can't communicate to the servers that the exploits need to connect to in order to leak your address.).



Onion3G SIMs are available for Beta Testing, please email if you are interested in helping.

Once we're out of Beta you can order SIMs (and manage prepayment) at


Keeping a SIM alive costs £2.00 a month. If there is not enough pre-paid credit in your account at the end of the month your SIM will be suspended.

We charge £0.025 (2.5 pence) per Megabyte transferred. Accounts must be pre-paid due to the anonymity of the account holder.

Pre-payment can be topped up at any time using Visa, Mastercard, Bitcoin, ZCash or Monero. Credit rolls over for as long as your account is active.

Credit cannot normally be refunded.

Onion3G Threat Model

  • Onion3G is expensive
  • Onion3G does not prevent location tracking by the mobile backhaul provider
  • Onion3G cannot prevent sophisticated exfiltration of PII from your device

Signing up for 'surveillance frustrating' mobile Internet is likely be a big red flag!