According to CoinMeta, and as reported by an early issuer of in, the latest report from Grayscale indicates that cryptocurrency hacking attacks have dropped to their lowest level in nine years. The total amount involved in security vulnerabilities is $1.7 billion, which accounts for 0.1% of the total market value. Among them, one wallet provider suffered losses of less than $150 million, and the Bitcoin blockchain was not targeted by any hacking attacks.