If your so called *friend* breached your systems security (aka hackingQuote:
one of my friends recently hacked into my pc.............we chat
usually on yahoo messenger and i have managed to trace his ip..........i
want to teach him a lesson but i have no idea how to hack into his pc
using his ip address...........could someone plzzzzz tell
me............im new to hacking...........plzzzzzz help.
it) he probably had you download something or click on a link etc... to
make this happen IMO. If you have his IP address provided to him by his
ISP then you should do the basic stuff do a WHOIS on the IP address and
contact the abuse department. I pretty sure this would violate any
EULA, Privacy policy, Acceptable Use Policy etc...( legal issues) etc...
and he would be banned from his ISP. If I was you (me personally) I
would just hack/break into his computer system/network (karma comes to
mind here) and do onto others as others have done on too you.
Obtain as much information about the target as possible
WHOIS QUERY, port scan, Obtain DNS records (SOA, MX, NS, A, PTR, SRV,
HINFO, TXT, CNAME, RP etc...) tools that come to mind (nmap, netcat,
fpipe,hping2, nessus, metasploit, john the ripper, etc...
so basically in a nut shell
1.) Indentify the target. (Already done you have his IP)
2.) Scan to find open ports
3.) Identify applications, servers etc.. (based on the open ports it
found)
4.) find exploits specific to those application and servers.
5.) Exploit (basically you're finding vulnerabilities to exploit) to breach the systems security.
basically you could have a field day with his ass if you really wanted too.

