Learn in the textbookSecurity Testing and IoT / Hardware Protection
DefinitionTamper resistance (耐タンパ性) is the ability to withstand attacks that read or rewrite the keys and data inside a device by taking it apart or measuring its signals.
ExplanationTo tamper is to meddle with a device without permission in order to probe or alter what is inside. IoT devices sit where people can reach them and may even be stolen, so they need to keep their secrets even when someone analyzes them in hand.
AnalogyA safe built so that forcing it open leaves the papers inside unreadable.
Memory hookTamper means "to meddle with" in English. It is the same word as in tamper-evident food packaging, which shows a trace once it has been opened.