Government hackers were responsible for the majority of attributed zero-day exploits used in real-world cyberattacks last year, according to Google.Google's report shows a decrease in zero-day exploitation, but at least 23 zero-day exploits were linked to government-backed hackers.Among the attributed zero-days, 10 were attributed to hackers working directly for governments, including 5 linked to China and 5 to North Korea.The remaining 11 attributed zero-days were likely exploited by cybercriminals, such as ransomware operators targeting enterprise devices.