Breach Response Firms
Data breach? Get expert incident response help within 24 hours. Compare vetted IR specialists by response time, industry, and expertise.
Every Hour Costs Money
The first 72 hours determine your breach outcome. Companies with incident response teams and tested plans save $2.66 million on average compared to those without. Fast containment reduces total costs by 54%.
Contain
Isolate affected systems. Preserve evidence. Activate response team. Do not delete anything.
Investigate
Engage forensic experts. Assess scope and data types. Determine notification obligations.
Notify
File regulatory notifications. Prepare communications. GDPR requires 72-hour notification.
Featured Incident Response Firms
Industry-leading IR specialists with proven track records. All firms offer 24-hour emergency response and global coverage.
Mandiant (Google Cloud)
24hrAlexandria, Virginia
Industry pioneer in incident response with expertise dating back to 2004. Known for investigating high-profile nation-state attacks and advanced persistent threats. Part of Google Cloud since 2022, operating in over 30 countries with frontline threat intelligence.
Specialties
Certifications
CrowdStrike Services
24hrAustin, Texas
Global cybersecurity leader providing cloud-native endpoint protection and incident response services. Investigated major breaches including Sony Pictures and DNC incidents. Combines threat intelligence with rapid response capabilities.
Specialties
Certifications
IBM X-Force
24hrArmonk, New York
Enterprise-grade incident response backed by IBM's global infrastructure and threat intelligence network. CREST-accredited with specialized expertise in hybrid cloud environments and AWS security. Provides integrated threat management aligned with NIST CSF.
Specialties
Certifications
Kroll Cyber Risk
24hrNew York, New York
World leader in incident response handling over 3,000 security events annually. Combines digital forensics expertise with risk advisory services across 35+ offices in 20 countries. Known for complex, high-profile breach investigations.
Specialties
Certifications
Breach Response Resources
Free templates, guides, and tools to prepare for and respond to data breaches.
Response Plan Template
Comprehensive incident response plan template. Customize for your organization in 2 hours.
Download Free →72-Hour Checklist
Step-by-step emergency response checklist. What to do in the first 72 hours after discovery.
View Checklist →Breach Database
50+ breaches tracked from 2024-2025. Learn from real incidents and attack patterns.
Explore Data →Why Use This Directory?
Only established firms with proven IR expertise and certifications
All listed firms offer 24-hour emergency response capability
Coverage across US, UK, Europe, and worldwide operations
Filter by industry: Healthcare, Financial, SaaS, Government, Retail
Frequently Asked Questions
What is a breach response firm?
A breach response firm (also called incident response firm or IR firm) is a cybersecurity company that specializes in helping organizations respond to and recover from data breaches. Services typically include digital forensics, malware analysis, threat containment, regulatory notification support, and recovery assistance.
How much does incident response cost?
Incident response costs vary based on breach severity and scope. Per-incident engagements typically range from $50,000 to $300,000. Retainer agreements cost $50,000 to $200,000 annually. The average total breach cost is $4.45 million globally and $9.36 million in the United States (IBM 2024).
How quickly can IR firms respond?
Most established IR firms offer 24-hour emergency response. Many can begin remote investigation within 2-4 hours of engagement. On-site response typically occurs within 24-48 hours depending on location. Retainer clients often receive guaranteed faster response times.
What should I do first during a breach?
In the first 4 hours: 1) Isolate affected systems from the network (do not turn off or delete), 2) Preserve all logs and evidence, 3) Activate your incident response team, 4) Contact legal counsel, 5) Engage an external IR firm if you lack internal expertise. Do not attempt to clean or remediate systems before forensic analysis.
When am I legally required to report a breach?
Notification timelines vary by regulation: GDPR requires notification within 72 hours, HIPAA within 60 days (or immediately if 500+ affected), CCPA "without unreasonable delay," and various state laws have specific requirements. Consult legal counsel immediately to determine your specific obligations based on data types and jurisdictions.
Don't Wait Until It's Too Late
Every minute matters during a breach. Connect with incident response specialists now— whether you're facing an active breach or building your response plan.