Week 21, 2020
BlockFi, Hegic, tBTC, Etheroll
This week’s theme is DeFi! Writing smart contracts is hard enough, but take sufficiently complex systems like DeFi apps and bugs just start popping up. Hegic, tBTC, Etheroll all had interesting vulnerabilities discovered and published this week.
The BlockFi incident begs several questions: Why do they still use SMS as a 2FA option especially for interna…