A Virus is a program which reproduces itself. It may attach itself to other programs, it may create copies of itself. It may damage or corrupt data, change data, or degrade the performance of your system by utilizing resources such as memory or disk space. Some Viruse scanners detect some Viruses. No Virus scanners detect all Viruses. Virus scanners will work for a while but people are always creating virii that will beat them.
A trojan is a program which does an unauthorized function, hidden inside an authorized program. It does something other than it claims to do, usually something malicious, and it is intended by the author to do whatever it does. If it is not intentional, it is called a bug.
Worms are programsthat copy themselves over and over using up space and slowing down the system. They are self contained and use the networks to spread, in much the same way that Viruses use files to spread. Some people say the solution to Viruses and worms is to just not have any files or networks.
The password file is located in the etc/passwd dir. You can get into the etc dir by logging on to the domain via anonymous ftp.
if the password file is shadowed you can find it in following locations.
A. Unix Path Token
AIX 3 /etc/security/passwd !
A/UX 3.0s /tcb/files/auth/?/*
BSD4.3-Reno /etc/master.passwd *
ConvexOS 10 /etc/shadpw *
ConvexOS 11 /etc/shadow *
DG/UX /etc/tcb/aa/user/ *
EP/IX /etc/shadow x
HP-UX /.secure/etc/passwd *
IRIX 5 /etc/shadow x
Linux 1.1 /etc/shadow *
OSF/1 /etc/passwd[.dir|.pag] *
SCO Unix #.2.x /tcb/auth/files//
SunOS4.1+c2 /etc/security/passwd.adjunct ##username
SunOS 5.0 /etc/shadow
System V Release 4.0 /etc/shadow x
System V Release 4.2 /etc/security/* database
Ultrix 4 /etc/auth[.dir|.pag] *
UNICOS /etc/udb *
An encrypted password is just the real password scrambled and changed. It can be cracked with a password cracked and a word file. A shadowed password hides the encrypted password somewhere else other than the etc. dir.
A shadowed password is a cover for the real password file. It shows that the real password is hidden somewhere else. Cracking a shadowed password file is impossible. Assuming that you got the password file via anonymous ftp. You should try connecting to port 25 and doing the sendmail bug.
Hacking is the art of breaking into computers to gain knowledge that our society has hidden from us. Hacking is illegal and the government spend lots of money each year to have hackers arrested…..when they should be spending the money on more important issues.