Explain the concepts of information systems security as applied to an IT infrastructure.

Explain the concepts of information systems security as applied to an IT infrastructure. Describe how malicious attacks, threats, and vulnerabilities impact an IT infrastructure. Explain the means attackers use to compromise systems and networks, and defenses used by organizations. Explain the role of access controls in implementing a security policy. Explain how businesses apply cryptography in maintaining information security. Analyze the importance of network principles and architecture to security operations. Use technology and information resources to research issues in information systems security. Write clearly and concisely about network security topics using proper writing mechanics and technical style conventions.