Incident Response Retainers for SEC 4-Day Disclosure

Why an IR Retainer Is Critical for SEC Compliance

The SEC's Cybersecurity Disclosure Rule (Item 1.05 of Form 8-K) demands that registrants disclose the nature, scope, and timing of a material incident within four business days of determination. However, "determination" is the operative word. You must have the forensic and technical capability to investigate, scope, and assess materiality in near real-time. An IR retainer provides guaranteed access to CyberSilo's elite responders, pre-integrated tooling, and a 60-minute SLA for initial triage—ensuring you don't waste critical hours searching for a vendor or negotiating a contract after a breach occurs.

Without a retainer, common delays include: contracting friction (average 48-72 hours), tool misalignment, and lack of pre-established chain-of-custody procedures. CyberSilo’s retainer eliminates these gaps by pre-deploying the ThreatHawk SIEM + SOAR platform with incident-specific detection rules, automated evidence collection workflows, and a direct line to our SOC. This proactive positioning allows you to report with confidence—or defend a decision not to report—within the SEC’s tight window.

How ThreatHawk SIEM + SOAR Powers Your SEC-Mandated Response

CyberSilo’s IR Retainer is not a paper commitment; it’s a technical deployment. The core of our offering is the ThreatHawk SIEM + SOAR platform, which is tuned for the specific compliance and operational demands of the SEC rule. Here’s how it works across the critical response phases:

Phase 1: Detection & Triage

ThreatHawk ingests logs from your entire environment—cloud, on-prem, endpoints, network—and correlates them using pre-built detection rules mapped to MITRE ATT&CK and the SEC’s materiality indicators (e.g., ransomware encryption event, exfiltration to anomalous IP, credential compromise of a finance executive). The SOAR engine automatically assigns a severity score based on blast radius and business impact, prioritizing alerts that require immediate human intervention.

Phase 2: Investigation & Scoping

Once an incident is validated, CyberSilo’s retained responders take control. Within the ThreatHawk platform, they have immediate access to pre-packaged incident response playbooks (e.g., "Ransomware Containment & SEC Disclosure"). These playbooks automate evidence collection—memory dumps, network captures, log extracts—and timestamp every action with cryptographic integrity for admissibility. This is crucial because the SEC and DOJ will scrutinize the technical basis for your materiality determination and the timeline of your response.

Phase 3: Materiality Decision & Disclosure

The platform includes a materiality assessment dashboard that correlates technical findings (e.g., data exfiltrated, systems encrypted, PII involved) with regulatory definitions. This allows your general counsel and CISO to make a defensible materiality decision within hours, not days. Once a decision is made to disclose, ThreatHawk generates a complete incident report suitable for 8-K filing, including a timeline, affected systems, data types involved, and remediation steps—all within the four-day deadline.

Mapping CyberSilo’s IR Retainer to Key SEC Compliance Controls

The SEC rule requires more than a fast report; it demands a defensible process. The table below shows how CyberSilo’s retainer—combining our team, process, and ThreatHawk platform—maps to the critical requirements of Item 1.05 and the broader SEC enforcement framework.

Who Benefits from the CyberSilo IR Retainer

This retainer is specifically designed for US-based enterprises that fall under the SEC’s jurisdiction, including:

• Publicly traded companies of all sizes, particularly those with complex IT environments (cloud, hybrid, multi-cloud).
• Financial institutions subject to both SEC and NYDFS 500, requiring coordinated response and reporting.
• Healthcare entities (not just HIPAA-covered) that also have public debt or equity securities.
• Critical infrastructure operators (energy, transportation, defense) where a breach can trigger multiple regulatory notifications (SEC, CIRCIA, TSA).

Our typical client is a CISO or security architect who needs to demonstrate to the board and audit committee that the organization has a repeatable, auditable incident response capability—not just a phone number to call when things go wrong.

Typical Deployment Timeline and Process

CyberSilo’s IR Retainer is designed for rapid operationalization. The following process flow shows how we typically move from signing to an active, proactive posture within two weeks.