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Security audit

Dji Backup

Security checks for vulnerabilities and agentic risk

Overview

This skill does what it says: it guides an agent to copy DJI footage from a mounted card to a NAS folder, with no hidden code or persistence found.

Before installing or using it, confirm that `/Volumes/SD_Card/DCIM` and `/Volumes/File/DJI_Video` are the intended mounted locations, and ask the agent to show the planned source and destination before it creates folders or starts a large copy.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (2)

Vague Triggers

Medium
Confidence
93% confidence
Finding
The trigger phrases are broad enough that the skill may activate on ambiguous requests like 'backup camera' or similar wording, causing bulk file-copy operations to run when the user did not intend this specific NAS transfer. Because the skill performs filesystem reads, directory creation, and recursive copying, accidental activation can lead to unintended data movement, duplicate archives, or copying from the wrong mounted volume.

Missing User Warnings

Medium
Confidence
95% confidence
Finding
The skill instructs the agent to create directories and recursively copy media without an explicit warning that it will modify the filesystem and perform bulk transfer operations. In practice, this reduces user awareness and increases the chance of unintended writes to a NAS path, duplication of large media sets, or copying from a misidentified removable device.

Static analysis

No suspicious patterns detected.