Daily tech & cyber security brief with RSS, OpenAI GPT-4o, and Gmail

What this workflow does

• Pulls free security/tech headlines from multiple RSS feeds (e.g., CISA, BleepingComputer, Krebs, SecurityWeek, Ars Technica, TechCrunch, Hacker News).

• De-duplicates stories, keeps only the last 24 hours, and limits to a manageable number.

• Uses OpenAI to write a concise brief with sections and "Why it matters."

• Sends a clean HTML email via Gmail.

Category: Security / News
Time to set up: ~10--15 minutes
Difficulty: Beginner--Intermediate
Cost: Mostly free (OpenAI tokens + Gmail)

What you'll need

• n8n (recent version)
• OpenAI credentials
• Gmail (or SMTP) credentials
• A few free RSS feed URLs (swap in/out as you like)

Set up steps

• Trigger -- Add a Cron to run daily (pick your time and timezone).
• Fetch -- Add one RSS Read node per source and connect all to a Merge (append).
• De-duplicate (this run) -- Add Remove Duplicates and compare on a stable key (prefer the article URL).
• Freshness -- Add an IF to pass only items published in the last 24 hours.
• Limit -- Add Limit to cap the total items (e.g., 25).
• Summarize -- Add OpenAI → Message a model to produce a JSON brief with subject + HTML body.
• Email -- Add Gmail → Send to deliver the brief to your inbox.

Tips & troubleshooting

• If everything gets discarded at de-dup e while testing, switch to "within current input" or reset the node's stored values.
• If no items pass the IF, widen the date window temporarily (some feeds publish late).
• If the email arrives blank, ensure Gmail email type is set to HTML and the subject/body fields map to the model's output.

Sources you can start with (swap freely)

CISA, BleepingComputer, KrebsOnSecurity, SecurityWeek, Ars Technica (Security), TechCrunch (Security), Hacker News (front page).