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…
Category: 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.…
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…
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…
Security+ Course – 3.6 Embedded System Security
1. Industrial Control Systems (ICS) ICS monitor and control industrial processes. Hackers love to target ICS for the following reasons: these attacks often have dramatic implications. EG: taking down a city electricity or water system these systems are often not well secured these systems are less likely to be patched and updated. In fact, some ICS system manufacturers advise their…
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…
Security+ Course – 3.4 Secure Systems Design
1. Operating System Types Workstation OS Desktop and laptops Typically Windows or OSX, sometimes Linux Server OS Designed for special purpose computers that provide services to others Usually this is Windows Server or Linux Mobile OS This is designed for smartphones and tablets iOS, Android or Windows mobile Kiosk computers devices placed inside of specilaised furniture with limited functionality OS…
Security+ Course – 3.3 Security Network Design
1. Security Zones Standard Network Zones A network can be split up into different security zones. typically a boarder firewall will have 3 interfaces connecting to these different zones: Connection to the internet Connection to the internal network Connection to the DMZ (Demilitiarised Zone). This contains the public facing services (email servers, web servers). IF these get compromised the firewall…
Security+ Course – 3.2 User Training
1. Security Education There are 2 important components of security training programs. Security training: this provides users with the knowledge they need to protect the organisations security Security Awareness: Keeps the lessons learned at the front of the users mind. EG: posters, email reminders etc… Security Training Methods instruction in onsite classes as part of new staff induction or orientation…
Security+ Course – 3.1 Security Design
1. Legislative and Regulatory Compliance Compliance Obligations There are 4 main types: Criminal law: deter and punish acts detrimental to society (murder, theft, hacking etc…). This can result in jail time Civil law: designed to resolve disputes between civilians, organisations etc… This cannot result in jail time Administrative law: Facilitate effective government by allowing agencies to carry out their duties.…