Course · v1.0.0

Safe Email

Spot spoofed senders, dangerous links and payment-change scams on your phone and desktop, and know exactly how to report them.

7 lessons · about 62 minutes · pass at 80% · certificate valid 12 months

What you will be able to do

  • Identify spoofed senders and look-alike domains by reading the real sender address on phone and desktop.
  • Check links, QR codes and attachments before opening them.
  • Recognize business email compromise, including payment-change and gift-card requests, and verify through a second channel.
  • Report a suspicious message the right way and know what happens next.
  • Explain in plain words what SPF, DKIM and DMARC do and why "passed" is not the same as "safe".

Lessons

  1. Spoofing and look-alike domains

    The display name is not the sender. Learn to find the real address in three taps. · 7 min

  2. Reading sender details on phone and desktop

    A repeatable three-tap routine for finding the real sender, the Reply-To and the "mailed by" details on any device. · 8 min

  3. Links, QR codes and attachments

    The text of a link is a label, not a destination. Learn to see where links, QR codes and attachments really go before you open them. · 9 min

  4. Business email compromise and payment-change requests

    The most expensive scams carry no link and no attachment, just a convincing request. Learn the patterns and the one rule that beats them. · 9 min

  5. Reporting a message and what happens next

    Deleting a phishing message protects you. Reporting it protects everyone else. Here is how, and what happens after you tap the button. · 7 min

  6. SPF, DKIM and DMARC in plain words

    Three checks decide whether a message really came from the domain it claims. Learn what each one answers, using the ndwtech.org setup as a live example, and why "passed" is not the same as "safe". · 10 min

  7. The inbox lab

    A walkthrough of the ten-message inspection lab. Learn the routine, see every verdict explained, then take the lab yourself. · 12 min

  8. Assessment: Inspect the inbox

    Inspect 10 simulated inbox messages, mark the bad ones and report them.

Start lesson 1