Affected scope
Tangem cards · Physical access
What the attack requires
Possession of a card and an invasive specialist laser laboratory.
What changed
No field firmware patch per researcher
What this finding establishes
Donjon describes specialist equipment costing roughly $250,000 and reports no firmware update path for cards already in circulation. This is a laboratory attack requiring possession of a card, not a remote exploit or evidence of an in-the-wild theft campaign.