1.
Safer online
communication
Maja Kraljic, @_22nds
LFU, March 16 2019

2.
Contents
● Passwords and Password Manager
● VPN
● Email encryption
● Browsers and add-ons

3.
#passwords
Let’s talk about
passwords!

4.
Compromised accounts - https://haveibeenpwned.com/

5.
#passwords

6.
Entropy as a measure of
password strength
2^103
#passwords

7.
Password
Managers
#passwords

8.
KeePassXC - https://keepassxc.org/

9.
Password generator

10.
Passphrase generator

11.
VPN
#vpn

12.
VPN
Foto: https://thebestvpn.com/what-is-vpn-beginners-guide/

13.
RiseupVPN - https://riseup.net/en/vpn/betatest

14.
Encrypted Email

15.
Why Encrypted
Email?

16.
How Encryption
Works?

17.
Public and private keys

18.
Encrypt & Decrypt a Message
Hello
Cathy!
Hello
Cathy!
Encrypt
Decrypt
5GWSE3T
H6VFN7JE
Cathy’s
public key
Cathy’s
private keyCathy
Alex

19.
● Generate public and private key
● Share the public key so others can
encrypt the message
● Use private key to decrypt
message
● Sign the message with your
private key

20.
Setup Email Client

21.
Thunderbird - https://www.thunderbird.net

22.
Gmail Settings - Enable IMAP -
https://mail.google.com/mail/#settings/fwdandpop

23.
Thunderbird - Settings for Existing Email Account

24.
Thunderbird - Settings for new account

25.
Thunderbird - Successful setup

26.
Setup Email
Encryption

27.
Linux: GnuPG - https://www.gnupg.org/download/
Mac: GPG Tools - https://gpgtools.org/
Windows: Gpg4Win - https://gpg4win.org/

28.
Enigmail -
https://addons.thunderbird.net/en-US/thunderbird/addon/enigmail/

29.
Enable OpenPGP

30.
Enigmail > Key Management

31.
Enigmail > Setup Wizard

32.
Share Your
Public Key

33.
Enigmail > Attach My Public Key

34.
Import keys

35.
Sign & Encrypt
Email

36.
Sign & Encrypt Email

37.
Browsers
&
Add-ons

38.
HTTPS everywhere

39.
Privacy Possum

40.
Resources
https://ssd.eff.org
https://securityinabox.org