A series of bad news darkened the cryptocurrency market

  After the Luna incident in May, a series of crypto funds declared default or were attacked

On June 8, another platform, Osmosis, had a lending hole. If a user adds a certain amount to the liquidity pool on the platform, they will receive an additional 50% of the assets. After being shared by an account on Reddit, many people took advantage of the vulnerability, causing about $ 5 million in damage.

On June 9, Optimism - a layer 2 blockchain project on the Ethereum network, once appreciated by the "father" of Ethereum Vitalik Buterin - was also hacked. From a vulnerability related to money transfer, crooks have exploited 20 million OP tokens of the project worth more than 20 million USD. However, the hacker then keeps only 10% as a reward. This money was dispersed through the Tornado Cash mixer.

On June 24, Harmony - a California-based cryptocurrency company - confirmed that the system was attacked by hackers via the Horizon cross-chain bridge. The incident caused a series of tokens held by the platform, including Ethereum, Tether (USDT) and USD Coin (USDC) worth more than $100 million.

Cross-chain bridges are currently one of the top attack targets for crypto criminals. According to Elliptic data, in the first 6 months of the year, more than a billion USD was stolen through this method, of which the largest scale was the Ronin bridge of the game Axie Infinity, causing more than 600 million USD in damage.

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