26 Apr '17, 10pm

Bitmain Can Remotely Shut Down Your #Antminer (and Everyone Else's)

Major Bitcoin mining hardware producer Bitmain can remotely shut down almost all active Antminer machines. Dubbed the “Antbleed” backdoor, abuse of the vulnerability could probably knock half of all hash power on the Bitcoin network offline. “Even if Bitmain had no bad intent, this is a gaping security hole,” said our source, who discovered the backdoor but asked to remain anonymous. The backdoor code can be seen on Pastebin and on GitHub , and today a website has been put up for Antbleed as well. How It Works The Antbleed backdoor is “stupid simple,” as our source described it. Whenever an Antminer appears online, and once every one to eleven minutes, it contacts a “port 7000 service” on the domain auth.minerlink.com , which is owned by Bitmain . The domain currently does not connect to any IP-address, and therefore does nothing. However, the domain could in the (near) fu...

Full article: https://bitcoinmagazine.com/articles/bitmain-can-remotely...

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