Integrated Digital Forensics and Incident Response (DFIR)
During a cybersecurity incident, investigation and response cannot operate as separate activities. The organisation needs to stop the immediate threat while also preserving the evidence required to understand what happened and whether the attacker still has access.
Acting too slowly can allow the incident to spread. Acting too quickly without considering the evidence can remove important information, hide the original cause, or make it difficult to confirm whether recovery is safe.
Integrated Digital Forensics and Incident Response from CA brings investigation, containment, recovery, and evidence handling together in one coordinated process. We help your organisation understand the incident, make informed decisions, limit further damage, and restore essential services with greater confidence.
Why This Matters
Cybersecurity incidents often begin with incomplete and conflicting information. A security alert may indicate a compromised account, suspicious process, unexpected connection, or unusual data transfer, but it may not show the full extent of the activity.
The organisation must decide whether to isolate systems, disable accounts, interrupt services, notify stakeholders, and begin recovery. Each decision can affect business operations as well as the evidence available for further investigation.
An integrated DFIR capability helps you:
Contain threats without losing important evidence
Coordinate urgent security actions with evidence preservation so that the organisation can respond while still understanding the incident.
Establish the full scope of the incident
Determine which systems, accounts, services, information, and business processes have been affected.
Support a safer recovery
Identify the original access route, remove persistent threats, and confirm that systems are ready to return to normal operation.
Make evidence-based decisions
Give technical teams and business leaders reliable information about the incident, its potential impact, and the actions required.
Our Approach
We do not treat incident response as a sequence in which containment ends before forensic investigation begins. The two activities need to support each other from the start.
Our approach combines technical investigation, evidence preservation, threat containment, business coordination, recovery support, and clear communication. We adapt the response to the nature of the incident, the importance of the affected services, and the information available at each stage.
The objective is to reduce harm while maintaining enough reliable evidence to understand the incident, guide recovery, and support any legal, regulatory, insurance, or contractual requirements.
Establish control and preserve essential evidence
We begin by understanding the suspected incident, the affected services, the available alerts, and the immediate risk to the organisation.
A clear response structure is established. We identify responsible technical and business contacts, define communication channels, record important decisions, and agree how investigation and containment activities will be coordinated.
Relevant evidence sources are identified and prioritised. These may include endpoint data, system logs, cloud services, identity records, email accounts, network activity, security alerts, applications, and affected user devices.
Evidence is preserved according to its value and how quickly it may disappear. At the same time, immediate safeguards can be introduced to reduce the opportunity for further damage.
Investigate the incident and contain the threat
We analyse available evidence to determine how the incident began, which accounts and systems are involved, what activity has taken place, and whether the threat remains active.
Information from multiple sources is connected to build a timeline and identify relationships between separate events. This may reveal stolen credentials, malware execution, unauthorised access, privilege changes, movement between systems, data collection, external communication, or attempts to maintain access.
Containment measures are selected according to the evidence, business impact, and urgency of the situation. Actions may include disabling accounts, isolating devices, blocking connections, restricting access, removing malicious files, and protecting vulnerable systems.
Where immediate isolation would cause serious disruption, we help define temporary controls that reduce risk while essential operations continue.
Remove the cause and support secure recovery
Once the incident is sufficiently understood and contained, we help remove the attacker’s access and address the weaknesses that allowed the incident to occur.
This may involve resetting credentials, removing malware, closing exposed services, correcting configurations, rebuilding devices, applying security updates, strengthening access controls, and removing unauthorised accounts or persistence mechanisms.
Recovery is planned according to business priority. Critical services are restored in a controlled order, with testing to confirm that systems operate correctly and no known threat remains.
Additional monitoring may be introduced during recovery to detect renewed suspicious activity. This provides greater confidence that restored services are safe and that the attacker has not retained another route into the environment.
Document the incident and strengthen future readiness
We document what happened, how the organisation responded, which decisions were made, what evidence supports the conclusions, and what impact the incident had.
The report separates confirmed facts, reasonable assessments, and unresolved questions. Technical details are provided for specialist teams, while management receives a clear explanation of the business consequences and remaining risk.
We also identify technical and organisational improvements. These may relate to logging, monitoring, access management, vulnerability remediation, supplier oversight, incident procedures, communication, backups, recovery, and staff awareness.
The lessons are translated into a prioritised improvement plan. Where required, CA can also support follow-up testing, procedure updates, exercises, and longer-term monitoring.
What Sets CA Apart
Investigation and response working together
We coordinate evidence collection, forensic analysis, containment, and recovery as parts of one incident-management process.
Decisions guided by reliable evidence
Actions are based on confirmed technical findings, business context, and current risk rather than unsupported assumptions.
Business-aware containment and recovery
We consider the operational consequences of isolating systems, disabling accounts, and interrupting important services.
Support from the first alert through improvement
We assist with initial triage, investigation, containment, recovery, reporting, and the improvements required after the incident.
The Business Value
Integrated DFIR from CA helps your organisation respond to a cybersecurity incident without losing sight of the evidence needed to understand and resolve it.
Earlier investigation and coordinated containment can limit the attacker’s opportunity to move through the environment, access additional information, or cause further disruption. At the same time, controlled evidence handling provides a stronger basis for decisions, reporting, and future review.
Business leaders receive clearer information about what is known, what remains uncertain, which services are affected, and what actions carry the least overall risk. Technical teams can focus on confirmed areas of concern rather than treating the entire environment as equally compromised.
A carefully managed recovery also reduces the possibility of restoring systems before the original threat has been removed. Lessons from the incident can then be used to strengthen controls and improve future readiness.
The result is a faster, more focused response, safer recovery, stronger evidence, and an organisation that is better prepared for future incidents.
Next Step
During an incident, containment, investigation, and recovery should support one another from the beginning.
Contact CA for an initial consultation. We will help you establish control, preserve relevant evidence, investigate the incident, contain the threat, and restore essential services through one coordinated DFIR process.