@pete_dushenski We admit we are at fault. We will be working w/affected users to reimburse those whose funds were misplaced.
— Blockchain (@blockchain) December 9, 2014
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Many in the community lauded the company for taking this step, although some still expressed concern over the effectiveness of their security measures.
A couple of weeks ago, users started reporting that their accounts had been hacked and bitcoins had been withdrawn. Apparently, hackers managed to mount successful attacks on several fronts through phishing and exploiting vulnerabilities in the Tor network.
Blockchain.info also informed its user base yesterday that during a scheduled software update, part of the software ensuring the security of private key generation was adversely affected for a 2.5-hour window. They added, “The issue was detected quickly and immediately resolved. In total, this issue affected less than 0.0002% of our user base and was limited to a few hundred addresses.” Several commenters responded, claiming to have incurred losses as a result.