OS Protection and Security

OS Protection and Security

1. Confidentiality: can only be accessed by authorized parties

2. Integrity : An unauthorized party gains access to a resource

3. Integrity: the system resources can be modified only by authorized persons.

4. Modification : occurs when an unauthorized party .

5. Availability : The requirement that a computing system accessible to revise the time allowed .

6. Interruption : occurs when an unauthorized company or reduces the availability of a resource.

7. Manufacturing : occurs when an unauthorized party inserts counterfeit between valid data.

8. Assets and vulnerabilities

   • Hardware: vulnerable to disruption , physical security are used to prevent these attacks
   • Software: is vulnerable to disruption , is also vulnerable to interception by unauthorized copies : this problem is still unresolved .
   • Passive attacks : they are difficult to detect , the goal is usually on prevention.
   • Active attacks : are difficult to prevent , so usually there is an emphasis on the detection and damage control .

9. protection:

   • No protection
     • Isolation
       • Share all
         • Dynamic Capabilities
           • Limit use

10. intruders

    • Masquerador : is an individual who enters into an operating system accounts of legitimate users .
    • Misfeasor : a legitimate user who accesses resources that are not privileged, or abuse such privileges.
    • Clandestine user: is a person who takes control of an audit system to evade controls.