make full use of and derive benefit from (a resource)

500 companies sprang up to exploit this new technology

make use of (a situation) in a way considered unfair or underhand

the company was exploiting a legal loophole

a bold or daring feat

despite a series of colourful exploits, his agents obtained little intelligence of value

a software tool designed to take advantage of a flaw in a computer system, typically for malicious purposes such as installing malware

if someone you don't know tweets you a link, it's either spam, an exploit, or probably both