The Calendar Phishing & AI Scam Defense Guide

You glance at your phone and there is a meeting you never agreed to, with a reminder set, a link, and your name on it. It got past your spam filter because your calendar let it in.

Fake meeting invites land on calendars without permission, and calendar-file phishing grew sharply in 2026 as scammers learned that invites are treated as low-risk. This plain-language guide shows how a fake invite travels to your calendar, and gives you the 10-minute lockdown and the 60-second check that stop them.

Inside:

- How a fake invite travels from a scammer to your calendar, even when the email lands in spam

- The fake Microsoft, Google, and PayPal sign-in pages, taken apart: six tells that give them away

- The 60-second check to run before any meeting link, phone number, or sign-in page

- Step-by-step lockdowns for Google Calendar, Outlook, and Apple Calendar, plus the AI-assistant prompt-injection angle

- The first-hour plan if you already clicked, and a family and office rollout checklist

Lock your calendar down in ten minutes, before the next invite lands.