From Latin 'explicitum' (an unfolding, a result) — a deed whose results are made visible. Both heroism and extraction.
To make full use of a resource; to use someone unfairly for one's own advantage. As a noun, a bold or daring feat; in computing, a piece of code that takes advantage of a vulnerability.
From Old French esploit (an achievement, revenue, deed), from Latin explicitum (an unfolding, a completion), the neuter past participle of explicāre (to unfold, to disentangle), from ex- (out) + plicāre (to fold). An exploit is literally something unfolded — a deed whose results have been laid out and made visible. The PIE root behind plicāre is *plek- (to plait, to weave, to fold). The verb sense to exploit (to make productive use of) entered English in the 19th century and quickly developed the pejorative sense of using someone unfairly — by 1838 it
In cybersecurity, an 'exploit' is code that 'unfolds' a software vulnerability — making visible a weakness that was hidden. The term preserves the Latin etymological sense with uncanny precision: 'explicāre' meant to unfold something hidden, and a security exploit does exactly that — it unfolds a concealed flaw and uses it.