During the last couple of weeks, the Ethereum network has been the target of a sustained attack. The attacker(s) have been very crafty in locating vulnerabilities in the client implementations as well as the protocol […]
Category: Hack
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 […]
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, […]
Security alert – All geth nodes crash due to an out of memory bug
Security Alert Affected configurations: Geth Likelihood: High Severity: High Summary: geth nodes running out of memory and crashing on block http://ift.tt/2cUzDIB Details: TBD Proposed solution: Switch to an alternative client until fix is provided: Parity […]
NSA Hacked? Cyber Super-Weapons for sale?
A group of hackers, using the moniker “The Shadow Brokers”, claim to have done the unthinkable – hacked the NSA. To backup this claim they are auctioning off their spoils of cyber-war – The NSA’s […]
Onward from the Hard Fork
The foundation has committed to support the community consensus on the admittedly difficult hard fork decision. Seeing the results of various metrics, including carbonvote, dapp and ecosystem infrastructure adoption, this means that we will focus […]
Hive: How we strived for a clean fork
The DAO soft-fork attempt was difficult. Not only did it turn out that we underestimated the side effects on the consensus protocol (i.e. DoS vulnerability), but we also managed to introduce a data race into […]
Hard Fork Completed
We would like to congratulate the Ethereum community on a successfully completed hard fork. Block 1920000 contained the execution of an irregular state change which transferred ~12 million ETH from the “Dark DAO” and “Whitehat […]
To fork or not to fork
Slock.it’s “The DAO” has been a hot topic as of late, both internally in the organisation as well as within our community. The Hard Fork is a delicate topic and the way we see it, […]
How to build server less applications for Mist
Ethereum is not meant to be a platform to build esoteric smart contract applications that require a STEM degree to understand, but it aims to be one pillar of a different architecture for applications on […]
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