Italian to English Bus/Financial Insurance

I know that, confusingly, in an insurance context this can be translated either as "claim" or "accident" or "loss" but there are some instances where none of these seem to fit. I am translating an insurance policy document for a bank and of course the word "sinistro" crops up repeatedly, such as in the following sentences:
... l'Assicurato avrà sei mesi di tempo a partire da tale momento per scoprire e denunciare eventuali sinistri che siano avvenuti nel periodo intercorrente ...

... In caso di sinistro la Società rimborserà all'Assicurato la somma liquidata a termini di polizza ...

The "sinistri" here are not necessarily "accidents" because they relate to the workings of a bank and have to do with losses due to employee dishonesty, forged banknotes, etc. They are not "claims", because they are the basis for the claims, not the claims themselves. I don't think they can all be termed "losses" either because that would be too specific.

If possible, could an insurance expert just confirm whether I can call them "adverse events" or tell me whether there a specific insurance term I can use?