Upon concluding the investigation and grasping the incident's nature and impact, the focus shifts to containment strategies to halt further harm.
Containment involves short-term and long-term actions to stop incidents from spreading.
Coordination across systems is vital to avoid tipping off attackers. Short-term measures reduce system visibility, like isolating or changing attacker control points for analysis.
Long-term actions include permanent changes such as password resets and ongoing communication with stakeholders. Remember, containment is only the beginning of the response, followed by eradication, recovery, and post-incident tasks.
Eradication targets the incident's core cause and residue, removing malware, rebuilding systems, and fortifying networks.
Recovery ensures system functionality, integrity, and ongoing operation through monitoring, marking the start of a phased approach towards comprehensive security improvements.
Summary:
- After understanding the incident's impact, containment strategies focus on short and long-term measures to prevent further spread.
- Coordination across systems is crucial to prevent alerting attackers during containment, involving actions like isolation and system visibility reduction.
- Eradication removes the incident's root cause, while recovery ensures system functionality and ongoing security improvements post-incident.