UNIX System Security
Bozidar Levi · 2002
System security is an extremely important issue, especially today, when computer systems are networked and directly exposed to an unknown number of intruders. UNIX designers could not anticipate such extensive development of computer technologies, but they have paid significant attention to system security and have provided a decent level of basic system protection. Standard UNIX offered two basic ways to prevent security problems: 1. Passwords were designed to prevent unauthorized users from obtaining access to the system at all.