According to a study , 636,000 ETH (more than $1 billion) were | Fundify — Blockchain and Crypto

According to a study , 636,000 ETH (more than $1 billion) were lost forever due to bugs and human errors - this is 0.5% of the emission of the second cryptocurrency.

About 306,000 ETH lost due to the Parity vulnerability, Quadriga lost 60,000 ETH due to a contract failure, and users sent 24,000 ETH to the burn address.