BNB Chain, a blockchain linked to the Binance cryptocurrency exchange, discovered an exploit on a cross-chain bridge that led to around $100 million in cryptocurrency being stolen. “There was an exploit affecting the native cross-chain bridge between BNB Beacon Chain (BEP2) and BNB Smart Chain (BEP20 or BSC), known as ‘BSC Token Hub. The exploit was through a sophisticated forging of the low-level proof into one common library,” stated BNB Chain. The exploit on the cross-chain bridge “resulted in extra BNB,” according to Changpeng Zhao, CEO of Binance, that resulted in a temporary suspension of the Binance Smart Chain (BSC). Binance stated earlier that BNB, which stands for “Build and Build” (formerly known as Binance Coin), is the blockchain gas currency that “fuels” transactions on BNB Chain. Since the BSC Token Hub bridge’s vulnerability allowed the unidentified threat actor attacker to mint new BNB tokens illegally, no user funds are believed to have been affected.
By Anthony Zampino Introduction Leading up to the most recent Russian invasion of Ukraine in