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Security audit

Missive

Security checks across malware telemetry and agentic risk

Overview

The skill appears to be a disclosed, read-only Missive helper, with one broad trigger phrase users should scope carefully.

Install this only if you are comfortable letting the agent use your Missive access for read-only searches or retrievals. When using it, ask for specific conversations, mailboxes, teams, or date ranges rather than broad organization-wide requests.

SkillSpector

By NVIDIA
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
Confidence
90% confidence
Finding
The trigger phrase says to use this skill for ANY Missive request and instead of calling the API directly, which is overly broad and can cause the agent to route all Missive-related tasks through this skill without narrower intent checks. Even though the listed actions are read-only in this version, broad mandatory routing increases the chance of inappropriate data access, unnecessary connector use, or future abuse if write actions are later added.

VirusTotal

59/59 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.