Computer crimes (1)
Computer crimes
- First network attack: 1988 (Worm; Robert Morris, Cornell)
- Attackers: hackers vs. crackers (vandals, spies)
- hacker are proud of what they are doing and publish their achievements; crackers - hacking for profit
- US companies lose $7.5 billion annually
Attacks
- Social engineering method (obtaining username and password from another person)
- Trojan Horses and system modifications (modified login, su, telnet, in.telnetd, ftp, ls, ps, netstat, ifconfig, find, du, df, libc, sync, inetd, and syslogd)