More than 280 blockchain networks could be vulnerable to “zero-day” exploits, according to Halborn, which could endanger at least $25 billion worth of cryptocurrency. It discovered three flaws, the “most critical” of which enables an attacker to shut down individual nodes by sending them specially crafted malicious consensus messages. Other zero-day flaws it discovered could be used by potential attackers to send Remote Procedure Call (RPC) requests that would crash blockchain nodes. The vulnerabilities have already been patched in Dogecoin, Zcash, and Litecoin.
More than 280 blockchains at risk of ‘zero-day’ exploits, warns security firm
