The Poloniex and HTX/Heco Bridge exploits as well as the KyberSwap flash loan attack were the three largest incidents in November, according to blockchain security firm CertiK.
CertiK, Exploits, Flash Loan Attacks, Poloniex, HTX Heco Bridge, KyberSwapRead More
You might also be interested in reading Argentina’s Schools will Teach About Bitcoin and Blockchain.