DORA Compliance Control Testing: Validating Articles 25 and 26 in Nemesis
The Digital Operational Resilience Act (DORA) requires financial entities operating in the European Union to demonstrate the operational resilience of their Information and Communications Technology (ICT) systems. Unlike traditional compliance frameworks that rely primarily on self-assessment questionnaires, DORA mandates active, continuous testing of security controls under Pillar III: Digital Operation Resilience Testing.
Nemesis provides an integrated environment for executing threat emulations, validating detection and prevention controls, and tracking compliance progress directly against DORA requirements.
DORA Pillar III Testing Spectrum
├── Article 25: General Testing Requirements (All covered entities)
│ ├── Vulnerability assessments
│ ├── Network security reviews
│ └── Automated control validation (EDR, SIEM, Firewalls)
└── Article 26: Threat-Led Penetration Testing (TLPT) (Significant entities)
├── Live adversary TTP emulation
├── MITRE ATT&CK framework alignment
└── Real-time scope and coverage mapping
Mapping Nemesis to DORA Testing Mandates
DORA Article 25: Automated Control Validation
DORA Article 25 requires financial entities to conduct regular operational testing of all critical ICT security controls. Nemesis addresses these requirements through automated purple teaming and technical evidence collection.
DORA Requirement | Technical Challenge | Nemesis Implementation |
Control Validation | Proving security stack blocks or detects active threats | Executes automated threat emulation scenarios against EDR, SIEM, and perimeter controls. |
Progress Persistence | Managing complex assessments across multiple engineering teams | DORA assessment state automatically saves and resumes without losing historical data or evidence links. |
Evidence Tracking | Linking technical test results to regulatory requirements | Dynamic tracking indicator maps validated test outputs directly to specific Article 25 controls in real time. |
DORA Article 26: Threat-Led Penetration Testing (TLPT)
Under Article 26, designated entities must perform Threat-Led Penetration Testing at least every three years. Tests must simulate live adversary Tactics, Techniques, and Procedures (TTPs) mapped to real world threat actors.
Nemesis runs threat emulation scenarios natively mapped to the MITRE ATT&CK matrix, fulfilling DORA TLPT threat profiling requirements.
Testing scope and techniques coverage are rendered directly inside Nemesis operational reports. This eliminates the need to export CSV/JSON files to external software dependencies.
Reporting and Internal Audit: Repeatable, Auditable Evidence
Nemesis makes every assessment repeatable and fully traceable, supporting DORA’s internal audit and reporting obligations. Threat emulation scenarios can be re-executed under the same conditions to confirm that a remediated gap is closed, or run on a regular schedule to demonstrate control effectiveness over time. Each execution records its scope, techniques, results, and linked evidence, creating a complete audit trail that internal audit teams and regulators can review without relying on manual records or screenshots.
Quantitative Metrics for DORA Regulatory Audits
Auditors require standardized, verifiable metrics demonstrating the operational effectiveness of security controls over time. Nemesis converts raw execution data into standardized compliance telemetry.
Prevention and Detection Percentages: Calculates the exact ratio of blocked, detected, and unmitigated attack techniques, presenting them as clean percentage based key performance indicators (KPIs)
Gap Analysis: Automatically isolates unmitigated techniques and failing detection rules, allowing engineering teams to implement targeted Sigma, YARA, or SIEM rules prior to formal audit submissions.
