Security audit
Fractional CFO Playbook
Security checks for vulnerabilities and agentic risk
Overview
This is a finance-advisory playbook with sensitive financial-data checklists, but the access it describes fits the stated Fractional CFO purpose and it does not include code, hidden execution, persistence, or exfiltration behavior.
Before installing, be aware this skill is meant for work with confidential client financial information. Use normal client authorization, least-privilege accounting access, and avoid pasting unnecessary bank, payroll, tax, or investor diligence documents into an agent unless the engagement requires it.
Vulnerability Patterns
- Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
- Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
- Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
- Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
- Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
- Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
- Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
- Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
- Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
- Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Static analysis
No suspicious patterns detected.