| Security Education Companion Skip to main content
Security Education Companion
A free resource for digital security educators
Planner (0)

End-to-End Encrypted Communications: Phone Apps

Last modified July 18, 2018
  • English
Duration: 1 hour(s)

Learning Objectives

Learners will:

  • Download an end-to-end encrypted communication app on their mobile devices.
  • Practice sending a message to someone else.
  • Practice making a phone call to someone else.
  • Practice sending a group message.
  • Verify keys/fingerprints/safety numbers with someone else (i.e., scanning QR codes or reading aloud and verifying in person).


  • Participants must have a mobile device with them if doing an install.
  • Trainer has already done threat modeling with this group.

  • Participants have completed the beginning part of this module.


Instructor: Learners
1:5 (One instructor to five students)

Suggested Materials

  • Projector
  • If planning an install, participants should bring their smart phones with them.

Lesson Content

Choose one of the following extended activities: