Krypton, Ethereum-based network, has recently recovered from a 2-step attack which resulted in a total of 21,465 KR, approximately $3000 USD, being stolen from Bittrex’s wallets. The Krypton team suspects that the attack might have been just a test: attackers might go for other Ethereum-based blockchains such as ETC, for example.
How the attack happened
After the attack, all deposits and withdrawals on both Bittrex and Yobit were disabled in case of another attack on the network and Krypton-accepted exchanges.
“This attack may be a “dry run” intended as proof of concept before targeting other Ethereum based blockchains. Shift, another Ethereum type coin, was also targeted by a similar 51% attack last week. Ethereum based blockchains are being targeted predominantly because they’re easy to fork and manipulate offline, while being used in conjunction with DDoS attacks.”
Krypton has resolved the issues for the lost funds and its community has purchased additional hashing power to keep a majority across the network. They have also suggested that Bittrex increase its withdrawal time to 1000 confirmations in order to prevent another Double-Spend situation.
The next target
With Krypton being the latest victim of Ethereum-based attacks, they predict Ethereum Classic might be the next for its high market cap. 2 weeks ago, Shift, yet another Ethereum token was attacked with a 51% attack and now both teams are increasing security.
An attack on Ethereum Classic however, might be more difficult due to the superior hashing power held by several pools. Ethereum-based tokens are mostly attacked due to their easy manipulation offline, as well as several Ethereum-based tokens having low hash power which can be easily taken advantage of.