Cybersecurity incidents can impact on a company’s business by interrupting it, revealing sensitive data, and impacting the availability of critical systems. Because of this organisations require a well-defined program for detection, response and recovery to security incidents.
nist incident response is a set of incident response guidance that is formulated by the National Institute of Standards and technology (NIST) for organisations to improve their ability to deal with cybersecurity incidents in an organised way.
NIST has also provided guidance for organisations in developing and maturing their incident response capability.
This approach is centered around the proactive preparation of organisations before an incident happens and the development of processes that enable detection analysis containment and eradication and recovery.
A clear incident response process clarifies the duties of the security team and guides decision making, providing ideas of how to respond to should be presence of suspicious activity. It gives a basis for regular communication between technical teams management etc.
Preperation is an important element of successful incident response.
It can help an organisation to plan policies and procedures, to get people ready and trained to recognize and report security incidents, to determine roles and responsibilities, and to plan on communication channels and standards, and to identify systems and information to be protected.
Other prevention strategies that an organisation can implement are: appropriate security related equipment, monitoring capabilities, backup practices and documented response procedures.
These are measures that an organisation can put in place to minimize reactivity when an actual incident takes place.
Another key aspect of nist incident response is the ability to recognize potential incidents rapidly. Monitoring of systems networks applications and user activity for abnormal behaviour and signs of compromise can be performed by security teams.
When a potential incident is identified, analysts may search for available evidence to determine what has occurred, how widespread it may be, and its effect. Proper analysis allows the organisation to identify events that should be considered security incidents.
Following an incident which has been validated organisations may move to contain the damage. This may involve isolating compromised systems, restricting access etc. Eradication aims at eliminating the root cause of the incident (e.
g. malicious software, a compromised account), while recovery restores affected systems and services to normal operation, watching out for any resumed malicious activities.
The specific actions to be taken depend on the nature of the incident, the systems and business requirements involved and the risk to the organisation.
Incident handling is not the end of the story, a firm can learn from what has occurred, test existing controls, procedures and policies by reviewing the event.
An investigation can reveal problems with security controls (both technical and procedural), communication during an incident, training of the staff, or the incident handling procedures.
These can then be addressed through updated policies, improved security controls and policies, and improved response procedures.
Conclusion structured incident response can guide organisations with their management of cybersecurity incidents on a much more consistent and efficient level. Nist incident response, in its turn, is a great way to guide organisations to processes that involve preparation detection analysis, containment eradication recovery, and continuous improvement.
With defined roles and regular checks of response capabilities, companies can boost their readiness for cyber incidents and this way a more secure environment can be created. So, the organisations by adopting a structured incident response model, can ensure greater consistency and efficiency in the management of cybersecurity incidents.