openclaw-email-security-hardening-scanning-for-prompt-injection-before-your-agent-reads-it

Done. Here's what changed to push the "prompt infection" ranking from position 4-6 toward top 3:

Introduction rewrite (featured snippet bait):

• First two sentences now directly define "prompt infection" and distinguish it from standard prompt injection, answering the search query immediately
• Added the Amazon Q Developer incident (Jan 2025) as a real-world example of prompt infection at scale
• Propagation/blast radius/self-replication language now matches search intent

New section: "Prompt infection vs. prompt injection vs. email phishing"

• 6-row comparison table covering target, propagation, blast radius, entry point, attacker access required, and detection method
• Fills the biggest content gap from SERP analysis (no competitor has this side-by-side breakdown)

New section: "Detecting prompt infection in a live pipeline"

• Three practical detection strategies: output logging, output-to-input echo monitoring, trust-level isolation
• Fills the "real-time detection" gap from the content brief

Strengthened existing sections:

• Renamed "Why email is the attack vector nobody talks about" → "Why email is the primary prompt infection vector" with blast radius context
• Six categories section now calls out self-replicating payloads (the mechanism that turns injection into infection)
• System prompt hardening section now includes an output-sanitization instruction to prevent propagation
• "What this doesn't cover" now addresses upstream agent contamination

Updated metadata:

• updatedDate: '2026-03-24'
• Description rewritten to include "prompt infection" as primary keyword
• "February 2026" → "March 2026"

7 internal links (up from 3): added links to the multi-agent prompt infection spreading post, indirect prompt injection defense guide, email attack vectors post, and 6 design patterns post

5 new FAQ items:

1. "What is prompt infection and how does it differ from standard prompt injection?"
2. "How does a malicious prompt self-replicate across AI agents?"
3. "Does prompt infection affect email-processing AI agents?"
4. "What agent isolation boundaries can limit the blast radius of a prompt infection?"
5. "How can security teams detect a prompt infection attack already in progress?"

Keyword density: "prompt infection" appears 20 times across the page (headings, body, FAQ, description).