North Korea-linked hackers attempted to infiltrate Coinbase by using fake identities and remote jobs, prompting the exchange to tighten its hiring policies. Coinbase now requires U.S. onboarding for all new hires, with sensitive roles requiring citizenship and fingerprint checks. This move follows reports of significant cyberattacks targeting cryptocurrency startups, including one where hackers stole over $900,000 while posing as freelance workers. While remote work remains possible, Coinbase has implemented mandatory in-person training sessions in the U.S. for all new hires and requires employees with sensitive data access to be U.S. citizens and submit fingerprints. CEO Brian Armstrong attributed these security measures to the rise of sophisticated cyberattacks aimed at exploiting remote hiring practices, emphasizing a need for stricter cybersecurity policies in light of increasing threats from North Korea-linked hackers.