Update (May 31, 07:47 UTC): EOS has tweeted to confirm that it has patched "most" of the reported bugs and is "working hard" on the remainder. It expects the mainnet launch to stay on schedule. See the post here.
Qihoo 360, a China-based internet security firm, says it has notified the EOS blockchain project about "a series of epic vulnerabilities" discovered on its platform.
The firm said in a Tuesday report that loopholes found in the EOS platform could expose nodes on the network to attackers, giving them the ability to execute code remotely and take "full control" of transactions. The firm claims that such an attack could potentially "decimate" the entire cryptocurrency network.
Qihoo 360 went on to explain that bad actors would be able to attack the network by constructing and publishing smart contracts containing malicious code on the EOS mainnet and have EOS supernodes pack them into new blocks.
Subsequently the code would affect all nodes on the network, including those of cryptocurrency wallets and exchanges, letting the attackers gain control of private keys to cryptocurrency transactions.
While EOS has not yet made any public comment on the issue, Qihoo 360 said in another blog update that the project's lead developer, Daniel Larimer, was notified of the issues and that he has since said the vulnerabilities – identified as issue number 3498 on Github – have been fixed.
"If any of these asserts trigger in release it shouldn't pass, but should throw. Allowing the code to continue running in release is a potential security vulnerability and will likely result in crashes elsewhere," Larimer wrote on the Github page.
Meanwhile, Larimer has today appealed for more external assistance in identifying critical bugs in the system with the project's mainnet launch just days away, tweeting:
Help us find critical bugs in #EOSIO before our 1.0 release. $10K for every unique bug that can cause a crash, privilege escalation, or non-deterministic behavior in smart contracts. Offer subject to change, ID required, validity decided at the sole discretion of Block One.
— Daniel Larimer (@bytemaster7) May 28, 2018
Following publication of the report, EOS prices slumped by as much as 11 percent, from a daily high of $12.37 to as low as $10.93. As of press time, EOS had climbed slightly to $11.22. Data from CoinMarketCap also shows that the world's fifth largest cryptocurrency by market cap has seen nearly $1.5 billion in trading volume over the last 24 hours.
Safe cracking image via Shutterstock