Secure module, electronic payment terminal, corresponding detection method

An electronic payment terminal comprising:

• a housing comprising an upper cover and a lower cover;
• first and second printed circuits each having an inner side, the inner sides of the first and second printed circuits being located facing each another, a plurality of electronic components to be secured being installed on the first and/or second printed circuits;
• a flexible printed circuit extending from the first printed circuit to the second printed circuit over at least part of their perimeter and forming with the first and second printed circuits a secure enclosure for the plurality of electronic components;
• and
• a first secure element extending from the first printed circuit through a hole formed in the second printed circuit, the first secure element coming into contact with the upper cover or the lower cover when the housing is closed, the first secure element being connected to a first detection circuit on the first printed circuit, the first detection circuit being configured to detect opening of the housing.

A method for detecting an intrusion into an electronic payment terminal comprising:

• a housing comprising an upper cover and a lower cover,
• first and second printed circuits each having an inner side, the inner sides of the first and second printed circuits being located facing each another, a plurality of electronic components to be secured being installed on the first and/or second printed circuits,
• a flexible printed circuit extending from the first printed circuit to the second printed circuit over at least part of their perimeter and forming with the first and second printed circuits a secure enclosure for the plurality of electronic components, and
• a first secure element extending from the first printed circuit through a hole formed in the second printed circuit, the first secure element coming into contact with the upper cover or the lower cover when the housing is closed, the first secure element being connected to a first detection circuit on the first printed circuit, the first detection circuit being configured to detect opening of the housing,
• the method comprises
• detecting an intrusion into the electronic payment terminal when at least one contact between the first secure element and the first detection circuits is open.