Below is a list of conferences I have spoken at:

August 4-9th 2018 - Black Hat USA, Las Vegas, USA
For the Love of Money: Finding and Exploiting Vulnerabilities in Mobile Point of Sales Systems
https://www.blackhat.com/us-18/briefings/schedule/index.html#for-the-love-of-money-finding-and-exploiting-vulnerabilities-in-mobile-point-of-sales-systems-10992

August 9-12th 2018 - DEF CON, Las Vegas, USA
For the Love of Money: Finding and Exploiting Vulnerabilities in Mobile Point of Sales Systems
https://www.defcon.org/

June 7-8th 2018 - RVASec, Richmond, USA
Hack in, Cash out
www.rvasec.com

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June 5th 2018 - 2018 New York State Cyber Security Conference, Albany, USA
Hack in, Cash out
https://its.ny.gov/2018-nyscsc

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May 25-27th 2018 - LayerOne, Los Angeles, USA
Hack in, Cash out
www.layerone.org

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March 18-25th 2018 - Troopers, Heidelberg, Germany
NFC Payments: The Art of Relay & Replay Attacks
https://www.troopers.de/troopers18/agenda/hzghkk/
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January 25th 2018 - OWASP, London, UK
How to Buy and Hack an ATM
https://www.youtube.com/watch?v=mZ0KKOPK9oU

October 26-27th 2017 - 8dot8, Santiago, Chile
Money Makes Money
https://www.8dot8.org/
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October 20-21 2017 - Hacktivity, Budapest, Hungary
"Money Makes Money"
https://hacktivity.com/en/

4th October 2017 - IPExpo, London, UK
"Application Security"