Comptia Security+, Security, Technology

Security+ Course – 4.4 Account Management

1. Understanding account and privilege management Account Management Tasks: implement the principles of least privilege: An individual should only have the minimum set of privileges necessary to complete their assigned job duties Implement separation of duties: Performing sensitive actions should require the collaboration of two individuals implementing job rotation schemes: regularly move people between jobs to prevent fraud managing the…

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Comptia Security+, Security, Technology

Security+ Course – 4.3 Authorisation

1. Understanding Authorisation Authorisation is the final step in the access control process. Once an individual successfully authenticates to a system, authorisation determines the privileges that individual has to access resources and information. 2 Principles of Authorisation Principal of Least Privilege: This principle states that an individual should have only the minimum set of permissions necessary to accomplish his or…

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Comptia Security+, Security, Technology

Security+ Course – 4.1 Identification

1. Identification, authentication, authorisation and accounting As security professionals, one of the most important things that we do is ensure that only authorised individuals gain access to the information, systems, and networks under our protection. The access control process consists of three steps: Identification: this is a claim of who the person is. In electronic system this when you enter…

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Comptia Security+, Security, Technology

Security+ Course – 3.9. Physical Security

1. Site and Facility Design Sites to be protected: – Data Centre – Server rooms – Media storage facilities (where you keep your offsite backup media) – Evidence storage locations – Wiring/Switch cabinets/closets (could be used for eavesdropping or getting access to the network) You should perform inventory of all sensitive sites and audit the security controls.     2.…

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Comptia Security+, Security, Technology

Security+ Course – 3.8 Cloud Computing and Virtualisation

1. Virtualisation There is lots information out there about virtualisation, this is just the cliffsnotes. For more: https://en.wikipedia.org/wiki/Virtualization Host machines run on physical hardware Host machines provide services to several virtualised guest machines They hypervisor tricks each guest into thinking it is running on dedicated hardware. The guest doesn’t know it’s a virtual machine.   Types of Hypervisor There are…

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Comptia Security+, Security, Technology

Security+ Course – 3.7 Software Development Security

1. Development Methodologies Waterfall Model https://www.tutorialspoint.com/sdlc/sdlc_waterfall_model.htm This is the first SDLC developed in the 1970’s by Winston Royce. The waterfall Model illustrates the software development process in a linear sequential flow. This means that any phase in the development process begins only if the previous phase is complete. In this waterfall model, the phases do not overlap This approach does allow…

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Comptia Security+, Security, Technology

Security+ Course – 3.5. Secure Staging and Development

1. Software Staging and Release Deploying code without processes (the wrong way to do it) Surprises end users Introduces security flaws Causes operational disruptions Increases the difficulty of rolling back flawed code Stage 1 – Development Environment Allows developers to develop and modify code Stage 2 – Test Environment Facilitates human and automated testing Stage 3 – Staging Environment Prepares…

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