ZenGo, a startup that is building a mobile cryptocurrency wallet, has discovered a vulnerability in some of the most popular cryptocurrency wallets, such as hardware wallet Ledger, BRD and Edge. Named BigSpender, the vulnerability might lead to an incorrect balance on your wallet as unconfirmed transactions are taken into account in your total balance. The attacker could revoke the transaction before it is confirmed, which could lead to some confusion. Even if you’re not familiar with cryptocurrencies, that type of attacks is quite popular on peer-to-peer marketplaces, such as Craigslist….
