Incident
Response
Incident response is the structured process of containing, investigating, and recovering from a cybersecurity breach. When something goes wrong, speed is everything — every minute of attacker dwell time increases damage. Tristarnex provides a dedicated responder, guaranteed response time, and full forensics capability on demand.
Active incident? Contact us immediately: info@tristarnex.com
Capabilities
Immediate Containment
Isolating affected systems to stop an attack from spreading — within minutes of engagement, not hours. Speed of containment directly determines the scale of damage.
Digital Forensics
Full forensic investigation to determine the initial access vector, attacker dwell time, lateral movement paths, data accessed or exfiltrated, and persistence mechanisms.
Ransomware Response
Ransomware-specific playbooks covering encrypted system recovery, ransom negotiation guidance, backup validation, and clean rebuild procedures.
Breach Investigation
Determining whether data was accessed or exfiltrated — critical for regulatory notification obligations under UK GDPR, and for understanding the full scope of the incident.
Eradication & Recovery
Removing all attacker presence from your environment, validating that persistence mechanisms are eliminated, and restoring systems to a known-good state.
Post-Incident Report
A full written report covering root cause, timeline, attacker techniques, remediation actions taken, and permanent improvements to prevent recurrence.
Our response process
Immediate triage
You contact us. A dedicated incident responder is assigned immediately and begins triage. We establish a secure communication channel and assess scope within the first 30 minutes.
Containment
Affected systems are isolated to prevent the attack spreading further. This happens before full investigation — speed of containment is the priority.
Investigation
Forensic analysis of logs, endpoints, network traffic, and identity systems to establish root cause, attacker techniques, and full scope of compromise.
Eradication
All attacker presence — malware, backdoors, persistence mechanisms, compromised accounts — is identified and removed from your environment.
Recovery
Systems are restored from validated backups or rebuilt clean. Operations resume with monitoring in place to detect any recurrence.
Post-incident review
A written report documents everything that happened, why it happened, and what permanently changes to prevent a recurrence. Your security posture improves after every incident.
Frequently asked questions
What is incident response?
Incident response is the structured process of detecting, containing, eradicating, and recovering from a cybersecurity incident. A well-executed incident response limits damage, reduces recovery time, preserves evidence for investigation, and produces improvements that prevent future incidents.
What should I do if I think we've been breached right now?
Contact us immediately at info@tristarnex.com. Do not power off affected systems (this destroys forensic evidence), do not pay a ransom without advice, and avoid communicating about the incident over potentially compromised channels. A dedicated responder will be in contact within minutes.
How quickly can you respond to an active incident?
We guarantee a response with a dedicated incident responder assigned immediately upon contact. Our detection-to-containment SLA is 94% within 15 minutes for monitored environments. For organisations engaging us reactively during an active incident, initial triage begins within the first 30 minutes of engagement.
Do you offer an IR retainer?
Yes. An incident response retainer gives you guaranteed access to a dedicated responder, agreed response times, and pre-negotiated rates — without the premium that comes with reactive emergency engagements. Retainer clients also receive proactive threat intelligence briefings and a quarterly security review.
Will we need to notify regulators after a breach?
Under UK GDPR, personal data breaches that are likely to result in a risk to individuals must be reported to the ICO within 72 hours of becoming aware. Our forensic investigation establishes whether personal data was accessed or exfiltrated — the information you need to make an informed notification decision. We can help you draft the notification if required.
Can you help recover from a ransomware attack?
Yes. Ransomware response is one of our most common IR engagements. We contain the spread, investigate the initial access vector, validate backups, guide the recovery process, and produce a post-incident report. We also provide ransom negotiation guidance — though in most cases, organisations with good backups do not need to pay.
Don't wait until you need us to find us
An IR retainer means guaranteed access, agreed response times, and no emergency premium. Book a briefing to understand what a retainer covers.
Book a retainer briefing →