Most Cryptocurrency Cost Less Than $1 Million a Day to 51% Attack: Cornell Professor

Earlier today, on May 31, prestigious US university Cornell professor Emin Gün Sirer ‏noted that the vast majority of proof-of-work (PoW)-based cryptocurrency require less than $1 million per day to successfully carry out a 51 percent attack.
Computing Power is Security
“The cost to 51% attack various coins. Most of these coins cost a pittance to attack. If your savings are in a coin, or anything else, that costs less than $1m/day to attack, you should reconsider what you are doin