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Security audit

Air Purifier Buying Consultant

Security checks for vulnerabilities and agentic risk

Overview

This is a plain instruction-only air purifier shopping guide with no commands, credentials, persistence, or hidden high-impact behavior.

Reasonable to install if you want air purifier buying help. Users should still verify current product availability, prices, replacement filters, and specs before purchase, since product examples can become outdated.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (2)

Whitespace Padding

Medium
Category
Prompt Injection
Content
**Filter type requirements by pollutant concern:**

| Concern                             | Required filter                                                                                               |
| ----------------------------------- | ------------------------------------------------------------------------------------------------------------- |
| Dust, pollen, pet dander, allergens | True HEPA (captures ≥99.97% of particles ≥0.3 µm — EN 1822 / US DOE standard)                                 |
| Bacteria, viruses (airborne)        | True HEPA (captures most; some models add UV-C as supplemental)                                               |
Confidence
70% confidence
Finding
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Autonomous Decision Making

Medium
Category
Excessive Agency
Content
1. **Confusing "HEPA-type" or "HEPA-like" with True HEPA** — Only True HEPA (or H13 HEPA per EN 1822) captures ≥99.97% of particles ≥0.3 µm. "HEPA-type" filters are unregulated marketing terms with no performance guarantee. For users with allergies, asthma, or smoke exposure, this distinction determines whether the purifier actually addresses their problem.

2. **Buying by coverage area on the box without checking CADR** — Manufacturer coverage area claims are usually calculated at 2 ACH (one air change every 30 minutes). For allergy or asthma sufferers, 4–5 ACH is the clinical recommendation, which halves the effective room size. A unit rated for 40 m² may only be adequate for a 20 m² room for a sensitive user.

3. **Assuming an ioniser or UV-C unit eliminates the need for a HEPA filter** — Ionisers charge particles but do not remove them from the air; particles may fall to surfaces. UV-C can inactivate some pathogens but only those that pass slowly through the UV exposure zone. Neither is a substitute for HEPA mechanical filtration for particle removal.
Confidence
75% confidence
Finding
Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Static analysis

No suspicious patterns detected.