As the digital currency bitcoin traced one of its meteoric ascents, a plum job posting began circulating online: chief financial officer for a rapidly expanding bitcoin financial-services company based in London. Although the company was real, the job had been dreamed up by North Korean hackers, according to Secureworks Inc., a cybersecurity company that discovered a document with the fake job description in November. It was meant to circulate by email among people in the bitcoin world. If someone clicked on it, a prompt would explain that it was created by a later version of Microsoft Word and that the user needed to "enable editing" and "enable content." Doing so would install a piece of malicious code. While many digitally savvy people would presumably know better, such attacks can pay off if they hit just a few distracted recipients.
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