The disclosure relates to a countermeasure method in an electronic component, wherein binary data are transmitted between binary data storage units, binary data being transmitted in several transmission cycles comprising a first cycle comprising: randomly selecting bits of the data, transmitting the selected bits and transmitting bits, each having a randomly chosen value, instead of transmitting non-selected bits of the data. A last transmission cycle comprises transmitting bits of the data that have not been transmitted during a previous cycle.
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