There's a Kitchener-Waterloo Crypto Interest Group, with a Wiki and a Mailing List.

• KWLUG - Encrypting E-mail with GnuPG, Thunderbird and Enigmail (2013-12-02)
• Formal Keysigning at the KWLUG meeting

• KWLUG: Why You Should Care About Security and Privacy
  Sarah Harvey repeats her lecture on how much we need to be concerned about the security and privacy of our information.

• KWLUG: Informal keysigning at the KWLUG meeting

The University of Waterloo Computer Science Club is hosting what looks to be a great series of lectures on Security and Privacy:

Held in MC 4041, on 2013-10-08, at 5:00PM.
The first lecture of our security and privacy series. By PhD student Sarah Harvey.
http://csclub.uwaterloo.ca/events/MC_4041-2013-10-08-5:00PM

Held in MC 4060, on 2013-10-15, at 5:00PM.
The second lecture of our security and privacy series. By undergraduate student Eric Dong.
http://csclub.uwaterloo.ca/events/MC_4060-2013-10-15-5:00PM

Held in DC 1302, on 2013-10-24, at 6:30PM.
The third lecture of our security and privacy series. By undergraduate student Simon Gladstone.
http://csclub.uwaterloo.ca/events/DC_1302-2013-10-24-6:30PM

Held in MC 3001 (Comfy), on 2013-11-05, at 6:00pm
The fourth event in our security and privacy series. By undergraduate students Murphy Berzish and Nick Guenther.
http://csclub.uwaterloo.ca/events/MC_3001_%28Comfy%29-2013-11-05-6:00PM

Held in MC 4060 on 2013-11-12 5:00PM
This is the fifth lecture of six in the Security and Privacy Lecture Series. By founding member of the Canadian Cybersecurity Institute and employee of local ISP Sentex Sean Howard.
https://csclub.uwaterloo.ca/events/MC_4060-2013-11-12-5:00PM

Held in MC 2038, on 2013-11-26, at 5:00PM.
The last lecture of our security and privacy series. By MMath alumnus Zak Blacher.
https://csclub.uwaterloo.ca/events/MC_2038-2013-11-26-5:00PM

• Informal keysigning at the KWLUG Meeting

• KWLUG: TOR: The Onion Router

• Kwartzlab: Cryptography Workshop