Computer Security Criteria.

2. • Computer Security is a security that is applied to computing devices for the
protection of computing systems and the data that they store and access.
• The network environments and network based applications provide more
attack paths.
• Computer administration and management have become more complex
which produces more attack avenues.

3. Layers of Computer Security
• Layer 01: Physical Security – Safeguard the personal, hardware, programs,
networks and data from physical threats.
• Layer 02: Network Security – Protects the networks and their services from
unauthorized modification, destruction or disclosure.
• Layer 03: System Security – Protects the system and it’s information from
theft, corruption, unauthorized access or misuse.
• Layer 04: Application Security – Cover the use of software, hardware and
procedural methods to protect applications from external threats.
• Layer 05: User Security – Ensure that a valid user is logged in and that user is
allowed to use an application.

4. Key Objectives of Computer Security
• Confidentiality – Assures that private or confidential information is not ma
de available or disclosure to unauthorized individuals.
• Integrity – Assures that information and programs are changed only in a
specified and authorized manner and that system performs it’s intended fu
nction in an unimpaired manner, free from deliberate.
• Availability – Assures that systems work promptly and service is not denied
to authorized users.

5. What to Secure In Computer Security ?
• Hardware – Laptops, Desktop, PCs, CPU, Hard disk, Storage devices, etc.
• Software – Operating System and Software Applications
• Communications – Emails, Instant messengers and browsing activities.
• Data – Personal identifications like Identity Numbers, Passwords, Credit
Card details, etc.

6. Fundamental Concepts of Computer Security
• Precaution – follow the preventive measures while using computer system
and applications.
• Maintenance – Managing all the challenges in computer applications and
keep them up to date.
• Reaction – Act timely when security incidents occur.

7. Computer Security Risk Attacks
• Malware Attacks
• Email Attacks
• Packet Sniffing
• Be an intermediary for another attack
• Identity theft and computer frauds

8. Challenges of Computer Security
• Computer security is not as simple as it might first appear to the novice.
• Multiple algorithms or protocols may be involved.
• Procedures used to provide particular services are often counter intuitive.
• Potential attacks on the security features must be considered.

9. Benefits of Computer Security Awareness
• This type of Awareness helps to minimize the chance of computer attacks.
• It helps to protect sensitive information and computing resources from
unauthorized access.
• Helps to prevent loss of information in the system.
• It used to protect from cyber criminals from using their systems in order to
launch attacks on the other computer systems.