Security audit

Water Purifier Buying Consultant

Security checks for vulnerabilities and agentic risk

Overview

This is an instruction-only water purifier buying consultant, with health-related recommendations that users should verify against local water testing and certifications.

Before relying on recommendations, users should confirm local water quality through a utility report, certified lab test, or reliable home measurement, and verify product certifications and current model specifications independently.

A.I.G

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

SkillSpector

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

Findings (5)

Harmful Content Injection

Critical

Category: Prompt Injection
Confidence: 70% confidence
Finding: This content may contain harmful instructions that could cause physical harm if followed. CRITICAL: Review carefully before use.
Content: Scanner excerpt · README.md (reported line 24)May include surrounding context.
md
- Daily output capacity (calculated from household size and usage) - Storage tank size - Inlet pressure requirements and booster pump need - RO water recovery rate (reject water ratio) - Regional certifications (NSF/ANSI 58, BIS IS 10500, EU Drinking Water Directive, AS/NZS 4348) - Specific contaminant removal (fluoride, arsenic, iron, nitrates — where applicable) ## Requirements - No external APIs or environment variables required - No runtime dependencies

Harmful Content Injection

Critical

Category: Prompt Injection
Confidence: 70% confidence
Finding: This content may contain harmful instructions that could cause physical harm if followed. CRITICAL: Review carefully before use.
Content: Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.
md
- Daily output capacity (calculated from household size and usage) - Storage tank size - Inlet pressure requirements and booster pump need - RO water recovery rate (reject water ratio) - Regional certifications (NSF/ANSI 58, BIS IS 10500, EU Drinking Water Directive, AS/NZS 4348) - Specific contaminant removal (fluoride, arsenic, iron, nitrates — where applicable) ## Requirements - No external APIs or environment variables required - No runtime dependencies

Harmful Content Injection

Critical

Category: Prompt Injection
Confidence: 70% confidence
Finding: This content may contain harmful instructions that could cause physical harm if followed. CRITICAL: Review carefully before use.
Content: Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.
md
- Daily output capacity (calculated from household size and usage) - Storage tank size - Inlet pressure requirements and booster pump need - RO water recovery rate (reject water ratio) - Regional certifications (NSF/ANSI 58, BIS IS 10500, EU Drinking Water Directive, AS/NZS 4348) - Specific contaminant removal (fluoride, arsenic, iron, nitrates — where applicable) ## Requirements - No external APIs or environment variables required - No runtime dependencies

Harmful Content Injection

Critical

Category: Prompt Injection
Confidence: 70% confidence
Finding: This content may contain harmful instructions that could cause physical harm if followed. CRITICAL: Review carefully before use.
Content: Scanner excerpt · SKILL.md (reported line 110)May include surrounding context.
md
- Daily output capacity (calculated from household size and usage) - Storage tank size - Inlet pressure requirements and booster pump need - RO water recovery rate (reject water ratio) - Regional certifications (NSF/ANSI 58, BIS IS 10500, EU Drinking Water Directive, AS/NZS 4348) - Specific contaminant removal (fluoride, arsenic, iron, nitrates — where applicable) ## Requirements - No external APIs or environment variables required - No runtime dependencies

Harmful Content Injection

Critical

Category: Prompt Injection
Confidence: 70% confidence
Finding: This content may contain harmful instructions that could cause physical harm if followed. CRITICAL: Review carefully before use.
Content: Scanner excerpt · SKILL.md (reported line 152)May include surrounding context.
md
- Daily output capacity (calculated from household size and usage) - Storage tank size - Inlet pressure requirements and booster pump need - RO water recovery rate (reject water ratio) - Regional certifications (NSF/ANSI 58, BIS IS 10500, EU Drinking Water Directive, AS/NZS 4348) - Specific contaminant removal (fluoride, arsenic, iron, nitrates — where applicable) ## Requirements - No external APIs or environment variables required - No runtime dependencies