Governance ensures that we are making the investment in things that are best for the organization security.
Governance deals with accountability and oversight. It shall start with the board of director and senior management to be effective in the organization: they provide mandates, budget, and are accountable for the security and the software used at the company.
GRC: Governance, Risk & Compliance
Terms are often misused:
- Governance is the oversight itself
- Risk is to look for what could go wrong (threat modeling, liability for when things do go wrong)
- Compliance is the way we can provide assurance to management, but also to customers, employees, stakeholders and regulatory bodies. It needs logs and information for investigations and understand what happened in the system.
GRC is concerned with the risk associated with a software and the risk associated with the use of a software. This includes how the software could fail and how it could be misused.
One way to prove we are doing things correctly is by the use of standards: sometimes they are required by a regulatory body (GDPR…), sometimes they are legal (need for resilience in a critical infrastructure, local laws etc). Some industries have standards as well, such as PCI for payment card industry.
Many government have standards as well, like NIST for the USA (free), or ISO for the world (expensive).
Security Design Principles
Security must be designed into information systems, including:
- Hosts (the machines)
Implementation of Security Concepts
Security is enforced through the use of controls. Controls are the way to enforce security into the system.
Controls must be:
- Improved (continuously)
Therefore we need to do risk assessment and the monitoring and management of our controls.
We need controls because there are risks.
Risk is defined as:
The likelihood of a threat exploiting a vulnerability and thereby causing damage to an asset.
One thing to look at is “what i the likelihood of the threat happening?” and “what is the amount of damage if it was to happen?”
This is where risk management is important.
Types of Controls
Controls may be:
- Technical/Logical (firewall, etc)
- Physical/Environmental/Operational (physical doors, locks etc)
Reasons for Control Resistance
- A limitation
- A hindrance
- A cost
They have impact on productivity. We don’t put controls unless there is a justification. The amount of control necessary commensurate with the level of risk.