david wong

Hey! I'm David, cofounder of zkSecurity and the author of the Real-World Cryptography book. I was previously a crypto architect at O(1) Labs (working on the Mina cryptocurrency), before that I was the security lead for Diem (formerly Libra) at Novi (Facebook), and a security consultant for the Cryptography Services of NCC Group. This is my blog about cryptography and security and other related topics that I find interesting.

Looking for a crypto intern at Cryptography Services! posted October 2016


The Cryptography Services team of NCC Group is looking for a summer 2017 intern!

We are looking for you if you're into cryptography and security! The internship would allow you to follow consultants on the job as well as lead your own research project.

Who are we? We are consultants! Big companies come to us and ask us to hack their stuff (legally), review their code and advise on their design. If we're not doing that, we spend our time reading papers, researching, attending conferences, giving talks and teaching classes, ... whatever floats our boat. Not one week is like the other! If you've spent some time doing cryptopals challenges you will probably like what we are doing.

We can't say much about who are the clients we work for, except for the public audits we sometimes do. For example we've performed public audits for TrueCrypt, OpenSSL, Let's Encrypt, Docker and more recently Zcash.

I was myself the first intern of Cryptography Services and I'd be happy to answer any question you might have =)

Take a look at the challenges here if you're interested!

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Hello David !

Actually, I'm interested to apply for Summer 2018 and just like you I'm french ! Do you have any advises concerning Visa, what amount of time the paper stuff takes,... I want to be well prepared for next year :)

Merci d'avance !



I wouldn't worry too much about the visa stuff, you first need to find a company that would sponsor your (e.g. a company like NCC Group). Once you found a job and you have a company who can sponsor you, then they will do most of the work for you, just sit on your ass and wait ;)


Thank you for your time, your answer helps me a lot!

Off topic but I love your blog :)
Enjoy Chicago! See you soon at a Security Conference or maybe NCC Group :p


glad I could help! Cheers!

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