Zero-day vulnerabilities in software products offered by major tech companies like Microsoft, Google, and Apple were largely exploited by hackers in 2022, according to information security firm Mandiant. The report found that operating systems were the most exploited product type, followed by browsers and network management products. Chinese state-sponsored cyber espionage groups were found to have exploited the most zero-day vulnerabilities, with North Korean and Russian actors also among the hackers exploiting the security flaws. The report tracked 55 zero-day vulnerabilities in 2022.

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