SOC 2 and Data Exfiltration: How ADX Maps to Trust Service Criteria

SOC 2 Trust Service Criteria for Data Protection

The AICPA's Trust Service Criteria define the control objectives that SOC 2 auditors evaluate. Three criteria are directly relevant to preventing unauthorised data exfiltration. CC6.1 requires logical access security controls that restrict access to information assets. CC6.6 requires controls against threats from sources outside the entity's boundaries. CC6.7 requires controls to restrict the transmission, movement, and removal of information to authorised users and processes. Together, these criteria establish that a SOC 2 compliant organisation must have technical controls preventing data from leaving through unauthorised channels — precisely what anti-data-exfiltration technology delivers.

• CC6.1 — Logical Access Security: restrict information asset access to authorised users, processes, and devices
• CC6.6 — System Boundaries: protect against threats from sources outside the entity boundary
• CC6.7 — Data Transmission Restrictions: control the transmission, movement, and removal of information
• CC7.2 — Monitoring: detect anomalies and evaluate for security events
• CC7.3 — Evaluation: assess whether detected events constitute security incidents

How BlackFog ADX Maps to CC6.1, CC6.6 and CC6.7

BlackFog ADX operates at the network layer on every endpoint, inspecting all outbound traffic and blocking transfers to unauthorised destinations. For CC6.1, ADX enforces logical boundaries on what data can leave each endpoint — even if an authorised user's credentials are compromised, data cannot be transmitted to malicious infrastructure. For CC6.6, ADX blocks connections to known command-and-control servers, dark web exit nodes, and suspicious external destinations, directly protecting against external threats. For CC6.7, ADX restricts all outbound data movement to approved channels, preventing both malicious exfiltration and accidental data exposure. SOC 2 auditors can review ADX logs as direct evidence of these controls operating effectively.

• CC6.1 mapping: ADX enforces data boundary controls regardless of user privilege level
• CC6.6 mapping: real-time blocking of connections to malicious external infrastructure
• CC6.7 mapping: all outbound data transfers restricted to authorised destinations and protocols
• CC7.2 mapping: continuous monitoring of outbound traffic with anomaly detection
• Audit evidence: ADX produces timestamped logs of all blocked and permitted transfers

Why SOC 2 Auditors Increasingly Expect Anti-Exfiltration Controls

SOC 2 audits have evolved significantly since the framework was introduced. In 2020, demonstrating firewall rules and access controls was typically sufficient to satisfy CC6 criteria. By 2025, auditors are asking specifically about outbound data controls because the threat landscape has shifted. Ransomware operators now routinely exfiltrate data before encrypting it — the so-called double-extortion model accounts for over 70% of ransomware incidents according to Coveware's 2024 quarterly reports. An organisation that can demonstrate it blocks unauthorised outbound transfers has a materially stronger position in a SOC 2 audit than one relying solely on perimeter defence and detection.

BlackFog's Own SOC 2 Certification: What It Means for Your Compliance

When you deploy a security tool, your SOC 2 auditor will evaluate whether that tool itself meets appropriate security standards. BlackFog's SOC 2 Type 2 certification means an independent auditor has verified that BlackFog's own development, operations, and data handling practices meet Trust Service Criteria over a sustained period. This eliminates a common audit concern: deploying a security tool from an uncertified vendor can create a new risk that auditors flag. With BlackFog, the tool itself is SOC 2 certified, and its deployment directly strengthens your own SOC 2 compliance posture across multiple criteria.

Integrating ADX into Your SOC 2 Control Framework

Deploying BlackFog ADX is not just a technology decision — it should be documented within your SOC 2 control framework. Map ADX to specific Trust Service Criteria in your control matrix. Document the deployment scope (which endpoints, which network segments). Establish monitoring procedures for ADX alerts and blocked transfer logs. Include ADX effectiveness testing in your internal audit programme. When your SOC 2 auditor reviews your controls, ADX provides concrete, auditable evidence that you have implemented technical controls against data exfiltration — not just policies stating that data should not leave the organisation.

• Add ADX to your SOC 2 control matrix mapped to CC6.1, CC6.6, CC6.7, and CC7.2
• Document deployment scope and coverage across all endpoint categories
• Establish a review cadence for ADX block logs and anomaly reports
• Include ADX in quarterly control effectiveness testing
• Retain ADX logs for the SOC 2 audit period (typically 12 months)