Archive for the 'Talks' Category

Predicting Random Numbers in Ethereum Smart Contracts

Slides from my AppSec California 2018 talk “Predicting Random Numbers in Ethereum Smart Contracts”

Detailed blog post: https://blog.positive.com/predicting-random-numbers-in-ethereum-smart-contracts-e5358c6b8620

Database Firewall from Scratch

Slides from our talk with Denis Kolegov at PHDays 7 “Database Firewall from Scratch” (+ bonus).

Database Firewall from Scratch from Denis Kolegov

PostMessage Security in Chrome Extensions

Slides from my talk at OWASP London Meetup on the 30th of March, 2017.

Video
CRX PostMessage Scanner source code

Waf.js: How to Protect Web Applications using JavaScript

Waf.js: How to Protect Web Applications using JavaScript from Denis Kolegov

CONFidence 2013: PHP Object Injection Revisited