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Digital Forensics and Incident Response (DFIR)
Investigate, contain, and recover
We provide detailed post-incident reports and actionable recommendations to strengthen your security posture and prevent future breaches.
About DFIR services
Cyber threats are escalating at an unprecedented pace. UK businesses now face hundreds of attempted cyberattacks every single week, with the financial impact of a single data breach often reaching millions of pounds in direct costs, regulatory penalties, and reputational damage.
The good news? Industry research shows that 92% of successful attacks could be prevented with robust incident response planning. That means most businesses have the power to dramatically reduce their cyber risk, if they have the right preparation and expertise in place.
When a security incident strikes, the difference between a swift recovery and prolonged, costly damage often comes down to having the right digital forensics and incident response (DFIR) capabilities ready to deploy.
Zensec’s DFIR services don’t just react to incidents, they identify the root cause, contain the threat, and preserve critical evidence. This evidence is collected to a legally admissible standard, making it invaluable for criminal prosecution, insurance claims, and regulatory investigations. At the same time, our rapid response approach can cut breach recovery times from months to just days, minimising disruption and restoring business operations faster.
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Why choose Zensec
We have an industry leading Incident Response Team. We are CREST accredited and holds the National Cyber Security Centre’s Cyber Incident Response Level 2 certification as well as representing numerous Cyber Insurance companies on panel. We have mature CSIRT processes and industry best practice methodology with hundreds of successful incident recoveries behind us.
Our expert teams deliver protection beyond basic security monitoring:
24/7 rapid response teams – We deploy emergency incident responders within hours to contain threats and preserve evidence.
Trusted by insurers and loss adjustors – We represent international loss adjustors and cyber insurance firms UK-wide.
Complete chain of custody – We maintain evidence integrity for legal proceedings and insurance claims.
Advanced forensic tools – Our specialists recover data from wiped, encrypted or damaged systems and mobile devices.
Proactive incident response planning – We build custom response plans and conduct threat hunting to prevent future incidents.
With Zensec, you get enterprise-grade cyber security protection designed to detect threats early, respond immediately, and recover completely.
We are equipped to deal with an attack from any ransomware group.
Don’t hesitate to contact us if you are under attack from a ransomware group not listed above.
What makes Zensec’s DFIR different?
Our service combines cutting-edge technology with rigorous scientific standards:
ISO 27001 accreditation – Our incident response processes comply with the ISO 27001 standard for information security management, ensuring robust controls and best practices throughout all stages of the investigation.
Mobile forensic capabilities – On-site evidence collection anywhere in the UK using portable labs for immediate response.
Multi-platform expertise – Investigations across Windows, macOS, Linux, mobile devices and cloud environments.
Regulatory compliance support – GDPR, HIPAA and industry-specific compliance with clear documentation for audits.
Known threat actors
Ransomware groups behind the attacks
Below is a breakdown of the most active ransomware groups and the variants driving their attacks.
How our DFIR protection works: The six-step-process
Our comprehensive DFIR approach follows six essential steps to ensure swift, effective incident response combined with thorough forensic investigation:
Step 1: Triage
Our incident responders quickly assess the situation to determine the severity, scope, and impact of the security incident. This initial evaluation prioritizes critical systems and data to focus resources where they are needed most.
Step 2: Analyse
Forensic experts and analysts collect and examine digital evidence from affected endpoints, networks, and cloud environments. Using advanced DFIR tools and cyber threat intelligence, they identify attack vectors, malware behavior, and potential data compromise, performing root cause analysis to understand how the incident occurred.
Step 3: Contain & mitigate
Immediate actions are taken to contain the threat and prevent further damage. This includes isolating affected systems, blocking malicious activity, and implementing temporary controls to limit the incident’s spread while preserving evidence for investigation.
Step 4: Remediate & eradicate
After containment, the team works to remove malware, close vulnerabilities, and eliminate threat actors from the environment. Endpoint monitoring and forensic investigations ensure all traces of the attack are eradicated to prevent recurrence.
Step 5: Recover
Systems and services are restored to normal operation with minimal downtime. Recovery efforts include data restoration, patching, and validating system integrity to ensure business continuity and resilience.
Step 6: Post-incident review
A detailed review is conducted to evaluate the incident response effectiveness, document lessons learned, and update incident response plans. This step strengthens your security posture, improves threat detection, and helps prevent future security breaches.
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Frequently asked questions
Key information when you’re under pressure.
Emergency teams deploy typically within two to four hours UK wide. Rapid response is critical to contain threats and preserve volatile data.
Advanced forensic tools can recover data from many wiped devices depending on post-reset usage. Memory forensics and specialised techniques often retrieve critical clues even from damaged systems.
Yes, when collected using proper chain of custody and court-approved forensic science methodologies. Our ISO-accredited specialists ensure all evidence meets strict legal standards.
Dealing with a ransomware attack?
Our ransomware recovery service can help
Our expert team works quickly to contain the breach, recover your data, and restore your systems to full operation. We’ll guide you through every step of the recovery process and help strengthen your defences to prevent future attacks. Regain control with Zensec - trusted support when it matters most.