well an exploit is exactly what it is...
its when you find something that shouldnt do something and use it to your gain and advantage
Dictionary.com's definition
1. to utilize, esp. for profit; turn to practical account: to exploit a business opportunity.
2. to use selfishly for one's own ends: employers who exploit their workers.
3. to advance or further through exploitation; promote: He exploited his new movie through a series of guest appearances.
And from SearchSecurity
A zero-day exploit is one that takes advantage of a security vulnerability on the same day that the vulnerability becomes generally known. Ordinarily, after someone detects that a software program contains a potential exposure to exploitation by a hacker, that person or company can notify the software company and sometimes the world at large so that action can be taken to repair the exposure or defend against its exploitation. Given time, the software company can repair and distribute a fix to users. Even if potential hackers also learn of the vulnerability, it may take them some time to exploit it; meanwhile, the fix can hopefully become available first.
check out these links
http://www.milw0rm.com/
http://www.metasploit.com/
can someone help me?if u need a fee tell me..cause i don't know perl, or in what can a exploit be written
