Implementation & Security of system & MIS

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This lecture segment introduces the Implementation and Security of Systems & MIS, focusing on the nature of security threats and the architectural response to them. The instructor distinguishes between natural threats like earthquakes and man-made threats such as sabotage, emphasizing the need for immediate reactive measures and the study of controls to identify attackers. The session transitions from theoretical text to a visual diagram illustrating the security architecture.

Chapters

1. 0:00 – 0:31 00:00-00:31

   The video begins with a text slide detailing security threats from natural and human sources, noting that attacks often stem from system drawbacks like poor security protocols. The view shifts to Figure 12.1, a flowchart showing Threats creating Attacks. The lecturer traces how Attacks exploit Vulnerabilities in Business processes. She circles 'Reduce' and 'Controls,' pointing to specific controls like self-assessment and system audits. Finally, she highlights 'Reactive Measures' prompted by attacks, listing recovery and legal actions, while writing 'Recovery' on the screen. The diagram explicitly labels Threats as Natural, Man made and External/Internal, and shows the flow from Attacks to Vulnerability in Business process Information system.

The lesson constructs a logical flow for information security: Threats (natural or man-made) create Attacks, which exploit system Vulnerabilities. To counter this, organizations implement Controls to reduce threats and Reactive Measures to handle the consequences. This architecture ensures a comprehensive approach to securing information systems against both external and internal dangers, linking the identification of threats to specific mitigation strategies like audits and recovery plans. It also mentions using transaction logs to study attack reasons. The text slide emphasizes that immediate reactive measures are necessary during attacks.