Google Project Zero Detects a Record Number of Zero-Day Exploits in 2021

Google Project Zero called 2021 a "record year for in-the-wild 0-days," as 58 security vulnerabilities were detected and disclosed during the course of the year.
The development marks more than a two-fold jump from the previous maximum when 28 0-day exploits were tracked in 2015. In contrast, only 25 0-day exploits were detected in 2020.
"The large uptick in in-the-wild 0-days in 2021 is due to

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