A heroic or extraordinary deed.
An achievement.
The first trek to the summit of Mount Everest was a stunning exploit.
A program or technique that exploits a vulnerability in other software.
To use for one’s own advantage.
To forcibly deprive someone of something to which she or he has a natural right.
Materialistic monsters who exploit "kind" folks will not have good outcomes, no matter how much comforts were ill-gained.