Ransomware Incident Response
Reduce impact, guide recovery, and restore operations with a structured Ransomware Response Plan built for resilience.
the challenge
The Warning Signs of a Ransomware Attack Before the Impact Escalates Across Your Environment
Files encrypted or renamed, ransom notes, or suspicious admin activity
Lateral movement, privilege escalation, or disabled security controls
Exfiltration alerts, unusual outbound traffic, or data posted on leak sites
Credential dumps, VPN anomalies, or MFA fatigue attacks
Ransom communications or extortion threats
Our Approach
Our Approach
SISA's Ransomware Incident Response helps contain the attack, verify what was impacted, and get the business back online safely.
Confirm indicators, attack window, and affected business services
Define scope across endpoints, servers, cloud workloads, and SaaS apps
Align communication with legal, compliance, and executive teams
Acquire forensic images, volatile memory, and key logs
Maintain strict chain of custody for every artifact
Isolate impacted assets, suspend compromised accounts, enforce MFA
Identify the ransomware family, entry vector, and active persistence
Check for data exfiltration and staging locations
Validate blast radius across domains, shares, and cloud buckets
Reconstruct the kill chain: ingress, lateral movement, exfiltration
Map privilege paths, abused identities, and misconfigurations
Correlate EDR, SIEM, and cloud telemetry for a complete picture
Guide clean-room restoration and golden image rebuilds
Verify backups are uncompromised before use
Close gaps in identity, network segmentation, and endpoint controls
Provide Root Cause Analysis, incident timeline, and impact summary
Prepare regulator-ready reports aligned to PCI DSS, DPDP, and GDPR where applicable
Support insurer and law-enforcement communication as required
Service Offerings
Our Ransomware Incident Response Delivers the Reports, Evidence, and Recovery Plans Required After an Attack
Incident Response Report: Scope, timeline, impact, and business risk
Root Cause Analysis: Entry vectors, exploited weaknesses, and fix list
Evidence Pack: Forensically preserved images and logs
Data Exposure Assessment: What was accessed, exfiltrated, or at risk
Recovery Playbook: Stepwise restoration and verification checks
Hardening Plan: Identity, endpoint, network, and cloud guardrails
BENEFITS
Our Ransomware Incident Response Helps You Move from Containment to Recovery Faster
Contain the attack faster with structured triage, isolation, and forensic validation
Understand exactly what happened through root cause analysis, timeline reconstruction, and impact assessment
Recover with confidence using clean restoration guidance and backup verification
Reduce business disruption by prioritizing critical systems and safe return to operations
Preserve defensible evidence for legal, regulatory, insurer, and investigative needs
Strengthen resilience after the incident with targeted hardening across identity, endpoint, network, and cloud
WHY SISA
SISA Ransomware Incident Response Combines Global Forensics Leadership With Regulatory-Ready Investigation
Global Leadership and Proven Success
Recognized as a leader in digital payment security, SISA has delivered 2,000+ audits across 40+ countries, earning the trust of major banks and payment service providers worldwide. Organizations rely on our expertise to secure environments and consistently meet regulator expectations with assurance.
Forensics-Driven Intelligence
Our approach is shaped by insights from 1,100+ real-world breach investigations, giving us unmatched visibility into attacker TTPs.
Global Forensics Leadership
Recognized as one of the top 4 global payment forensics investigators (PFIs). Inputs from our Forensics engagements are converted into Detection use-cases and Threat Hunting hypotheses .
Regulatory-aligned expertise
Investigations designed to meet global compliance standards such as PCI DSS, DPDP, and GDPR.
Trusted Evidence. Defensible Reporting.
Strict chain-of-custody procedures and defensible reporting trusted in audits, regulatory reviews, and legal proceedings.
Act fast. Talk to SISA SAPPERS today
FAQs
Ransomware incident response is an urgent technical process deployed to isolate, contain, and eradicate a ransomware attack. It focuses on halting active file encryption, securing backup environments, identifying the root exploit, and safely restoring business operations.
Healthcare, education, and manufacturing are prime targets due to their low tolerance for downtime. However, any industry doing business today is a potential target, making rapid ransomware containment and recovery services critical for every modern digital sector.
The immediate priority is network isolation. Compromised endpoints, servers, and storage units must be disconnected from the local network and internet immediately to halt the spread of the ransomware to active backup repositories.
Double extortion occurs when attackers not only encrypt corporate systems but also exfiltrate sensitive data before launching the encryption phase. They then threaten to publish this stolen information online if the ransom is not paid.
Law enforcement and security experts strongly advise against paying ransoms. Payment does not guarantee a working decryption key, funds criminal enterprises, and frequently marks the organization as an easy target for future attacks.
Response teams analyze event logs, registry keys, and firewall traffic to find the point of origin. They typically trace infections back to phishing emails, unpatched virtual private networks (VPNs), or compromised Remote Desktop Protocol (RDP) credentials.
Immutable backups are write-once, read-many storage architectures that cannot be modified, encrypted, or deleted by anyone, including administrators. This ensures that clean, uncorrupted data remains available for system restoration after an attack.
SISA provides rapid ransomware incident response services. Driven by our global forensics expertise, our team works to isolate the infection, analyze the ransomware strain, secure unaffected systems, and build a safe containment and recovery strategy.
Hear what our customers say
Over the past three years, SISA has been a trusted cybersecurity partner, helping us strengthen our security posture through services such as Breach and Attack Simulation (BAS), Advanced Threat Hunting and monitoring via their ProACT Agentic SOC platform. Their practical, real-world threat simulations have provided valuable visibility into the effectiveness of our security controls, enabling us to identify gaps, prioritize improvements, and enhance threat detection and response capabilities. SISA’s expertise, responsiveness, and outcome-focused approach have made them a reliable partner in advancing our overall cybersecurity resilience.
Sreerag V M
Cybersecurity Manager in EqualizeRCM Services
SISA Sappers has been a trusted Digital Forensics and Incident Response partner, consistently demonstrating strong expertise in cybersecurity, incident response, digital forensics, and threat investigations. Their team delivers timely updates, maintains clear and effective communication, and provides comprehensive, well-structured reporting, ensuring transparency throughout each engagement. SISA collaborates closely with our internal teams to effectively manage and resolve complex cyber incidents and security challenges. Their professionalism, technical capabilities, and actionable recommendations have contributed significantly to strengthening our security posture, improving incident response capabilities, and enhancing overall cyber resilience.
MJ
Security Lead, A Leading Financial Institution in South East Asia
SISA’s Breach and Attack Simulation gave us practical visibility into how our security controls performed under real-world attack scenarios. The simulations across external, internal, and O365 environments helped us identify which controls were effective, where gaps existed, and what needed immediate attention. Because SISA’s detection capabilities were already integrated into our environment, we could also better understand how attacks were detected and handled across different stages of the simulation. What stood out most was the transparency of the engagement and the actionable guidance the team provided throughout the process.
Tej Pratap Bisht
Head of Cybersecurity & DevSecOps, Reach Mobile
