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Security audit

Agent Email Patterns

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small advisory guide for designing safer agent email workflows and does not include code that runs, installs, or accesses data.

Installers should understand that this skill may be auto-selected for agent communication design tasks, but its contents are documentation-style guidance. Review its recommendations before applying them to real mailboxes, webhooks, or sending permissions, especially where human approval or destructive/admin email actions are involved.

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
  • 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 (1)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill enables allow_implicit_invocation without any visible activation constraints, scope limits, or trust gating in this file. That can cause the skill to be auto-selected in contexts the user did not explicitly intend, which is risky because this skill influences agent communication, authorization, identity, and message-flow design decisions that may affect security-sensitive architectures.

Content

No source excerpt is available for this finding.