https://www.certik.com/skytrace
https://ciphershastra.com/sherlock.html
^^ Continuously updated with deployed contracts on the Ethereum and Fantom blockchains
Track all your bridge transactions across Ethereum
https://socketscan.io/
https://www.openzeppelin.com/
https://hexens.io/
https://halborn.com/
https://twitter.com/verichains
https://telegra.ph/All-known-smart-contract-side-and-user-side-attacks-and-vulnerabilities-in-Web30–DeFi-03-31
https://officercia.mirror.xyz/_nD1Rtxe1PplK-NQzIq9sl-KNtajQG0aKqYsV36RTjA
physical bitcoin security talk (I think)
https://vimeo.com/365979416#t=24m50s
https://github.com/jlopp/physical-bitcoin-attacks
weekly eth news