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Security audit

Executive Assistant Time Blocking

Security checks for vulnerabilities and agentic risk

Overview

This skill is coherent for calendar time-blocking, but it can create and delete Google Calendar events without clear confirmation, limits, or rollback safeguards.

Review this skill carefully before installing. It is not evidence of malware, but you should only use it if you are comfortable granting it Google Tasks and primary-calendar access, and you should require preview/confirmation plus a rule that it may only delete events it created.

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

Missing User Warnings

High
Category
Not specified by scanner
Confidence
98% confidence
Finding

The SOP explicitly instructs autonomous creation and deletion of calendar events without an upfront user warning or explicit consent step for modifying calendar data. In this context, the danger is elevated because the workflow not only writes new events but may also delete events during overlap resolution, creating a real risk of unintended data loss or disruption to the user's schedule.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The activation condition is broad enough to trigger on common scheduling or assistant-style requests, which can cause the skill to engage in calendar-modifying behavior outside a narrowly intended context. Because this SOP proceeds toward autonomous scheduling and later deletion/remediation actions, an accidental match increases the chance of unintended task processing and calendar changes.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.