Question: Operating System Security

Mumbai University > Computer Engineering > SEM 7 > Cryptography & System Security

Marks: 5M

Year: DEC - 2015

modified 2.4 years ago by gravatar for dayakargundamalla25 dayakargundamalla2510 written 2.4 years ago by gravatar for Sagar Narkar Sagar Narkar1.5k

Operating System Security:

  1. Security refers to providing a protection system to computer system resources such as CPU, memory, disk, software programs and most importantly data/information stored in the computer system.

  2. If a computer program is run by an unauthorized user, then he/she may cause severe damage to computer or data stored in it.

  3. So a computer system must be protected against unauthorized access, malicious access to system memory, viruses, worms etc.


Authentication refers to identifying each user of the system and associating the executing programs with those users. It is the responsibility of the Operating System to create a protection system which ensures that a user who is running a particular program is authentic.

One Time passwords:

One-time passwords provide additional security along with normal authentication. In One-Time Password system, a unique password is required every time user tries to login into the system.

Program Threats:

Operating system's processes and kernel do the designated task as instructed. If a user program made these process do malicious tasks, then it is known as Program Threats.

System Threats:

System threats refers to misuse of system services and network connections to put user in trouble. System threats can be used to launch program threats on a complete network called as program attack. System threats creates such an environment that operating system resources/ user files are misused.

modified 2.4 years ago  • written 2.4 years ago by gravatar for Sagar Narkar Sagar Narkar1.5k
Please log in to add an answer.