USB data blocker (Plugable)

Capabilities

Radio & network

Power, no datastock (upstream)

no data lines

The USB data lines are physically absent: the device can charge but no data can pass.

stock (upstream) onsecret workshop option absent

What this does not protect against

  • Protects only against USB **data** exchange; nothing else.
  • May reduce charging speed (no data negotiation).
  • Does not protect against a port that over-volts (rare).
  • No effect on network, firmware or other attack surfaces.

What the workshop does to this device

Our pipeline

  1. USB keys: imaged at the workshop, signature-verification procedure provided — don't take our word for it.
  2. Passive accessories (Faraday sleeve, data-blocker): checked, shipped as-is — nothing to configure.

What you can ask us

  • Questions: Signal / PGP / anonymous ticket.
  • Re-imaging of a key on request.

What we do not do

  • No software added to passive accessories.
  • No remote support (no connected device).

What it is

What this is

A small adapter that physically removes the USB data pins: your phone charges but can exchange nothing with a potentially malicious port.

Honesty

A simple, narrow, genuinely useful object. Not a general privacy tool.

Usage guide

Use

  1. Plug the blocker between your cable and the port.
  2. Charge normally; no "Trust this computer?" prompt should appear.

Tips

  • Prefer your own wall charger when possible.
  • Pair with a power bank when traveling.

Specifications

TypeUSB power-only pass-through adapter
DataData lines physically absent
ChargingPower passed through (rate depends on model)
UsePublic ports, unknown computers

After purchase

Your device arrives already prepared — this guide is for redoing everything yourself or checking our work.

Open the full guide

Utilisation

  1. Branchez le bloqueur entre votre câble et la borne.
  2. Chargez normalement ; aucune fenêtre « Faire confiance à cet ordinateur ? » ne doit apparaître.

Conseils

  • Préférez votre propre chargeur secteur quand c'est possible.
  • Combinez avec une batterie externe en voyage.

Verifiable sources

Support
USB data blocker — onsecret