Countries like China and North Korea were specifically mentioned
By 2024, Google’s threat information group (GIRL) discovered 75 zero-days vulnerabilities and argued that the majority were used in state-sponsored hacking campaigns. The company made these claims in “Hello Zero-Day My Old Friend, a 2024 utilization analysis” paper recently published.
In the report, Google says the number of zero-day deficiencies fell compared to 2023 (from 98 to 75). However, the four-year trend is that the speed of zero-day exploitation “continues to grow at a slow but steady pace.”