The method for reliabilization of the supervision of a network comprises: acquisition of a set of events, said events comprising a time stamp corresponding with the emission time of said event; storage of the received events; storage of at least one scenario (SC) comprising a first sequence (S1) of events to be received within a time interval threshold (ΔTs) and a first condition (CD1) to be satisfied; detection of at least a part (pS2) of a received second sequence of events (S2) similar to the first sequence (S1); determination of a second emission time interval (ΔT3) of the second sequence (S2); verification that the first condition (CD1) of the scenario (SC) is satisfied in function of the determined emission time interval (ΔT3), the time interval threshold (ΔTs) of scenario (SC), and the first sequence (S1) and the second sequence (S2) received, and generation of a second status message (M2ET).