Security Alert – Mist can be vulnerable when navigating to malicious DApps

Mist leaks some low level APIs, which Dapps could use to gain access to the computer’s file system and read/delete files. This would only affect you if you navigate to an untrusted Dapp that knows about these vulnerabilities and specifically tries to attack users. Upgrading Mist is highly recommended to prevent exposure... [Read More]

FAQ: Upcoming Ethereum Hard Fork

The Ethereum network will be undergoing a hard fork at block number 2463000, which will likely occur between 12:00 and 13:00 UTC on Tuesday, October 18, 2016. A countdown timer can be seen at https://fork.codetract.io/. [Read More]

Transaction spam attack: Next Steps

Today the network was attacked by a transaction spam attack that repeatedly called the EXTCODESIZE opcode (see trace sample here), thereby creating blocks that take up to ~20-60 seconds to validate due to the ~50,000 disk fetches needed to process the transaction. The result of this was a ~2-3x reduction... [Read More]

The Ethereum network is currently undergoing a DoS attack

URGENT ALL MINERS: The network is under attack. The attack is a computational DDoS, ie. miners and nodes need to spend a very long time processing some blocks. This is due to the EXTCODESIZE opcode, which has a fairly low gasprice but which requires nodes to read state information from... [Read More]