newsletter-digest

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.90). The skill explicitly fetches full newsletter content from Gmail threads (see "Step 1: Find Unread Newsletters" and "Step 2: Get full content" referencing Substack/Beehiiv/convertkit) and then analyzes that untrusted, third‑party newsletter content to determine categorizations and drive actions (Obsidian updates and archiving), so such content could carry indirect prompt-injection instructions that affect tool use and decisions.