Purple Lantern Practice Ltd.

A steampunk workshop mid-preparation: chalkboards covered in half-erased diagrams, clockwork models of networks, brass instruments calibrated but not yet in use. A purple lantern casts light across open notebooks and simulation tokens.

Illuminating the space between attack and defence

Purple Lantern Practice Ltd designs and facilitates purple-team engagements that help organisations understand how security actually behaves under pressure.

We work between red insight and blue responsibility, turning adversarial thinking into shared understanding, and shared understanding into credible readiness for audits, incidents, and difficult decisions.

We do not run your systems. We do not sell tools.

Operation Red Lantern, the practice’s routing engagement, lives where its material belongs: a network quietly rewritten rather than loudly attacked, prefix by prefix, where every announcement is technically valid and the trouble is in which way the traffic now goes.

The attack is red’s, run from the Scarlet Semaphore and for as far as possible, performed for real in the inter-domain SimLab, a live BGP fabric where a player can work the hijacks and route leaks from a foothold. Catching the same move is the other half: blue’s network counter-play from inside a defended network, and Huginn and Muninn for watching and understanding the control plane on a specific public table.

Enable strategic patience

Last updated: 1 July 2026