Project Zero, Google’s in-house team of experts tasked with finding zero-day exploits, reports that it found over twice as many in 2021.
According to the team’s annual report, it found a record 58 zero-day exploits in 2021. That’s over double the 25 it detected in 2020 and the previous record of 28 detected in 2015.
While such a large uptick may cause alarm, Google puts a positive spin on the news.
“We believe the large uptick in in-the-wild 0-days in 2021 is due to increased detection and disclosure of these 0-days, rather than simply increased usage of 0-day exploits,” wrote Maddie Stone, Project Zero Security Researcher at Google.
Google also notes that – of the 58 zero-day exploits it found in 2021 – just two “stood out as novel: one for the technical sophistication of its exploit and the other for its use of logic bugs to escape the sandbox.”
The remaining 56 zero-day exploits were similar to previous and publicly-known vulnerabilities.
However, that’s no reason to become complacent. We’ve seen numerous large attacks using zero-day vulnerabilities over the past couple of years.
“2021 highlighted just how important it is to stay relentless in our pursuit to make it harder for attackers to exploit users with 0-days,” adds Stone.
Last year, Microsoft warned of zero-day vulnerabilities in Windows 10, Exchange, Office, and more—ultimately issuing patches for over 100 potential risks. Apple’s platforms haven’t been spared either, over the past few months alone it’s had to rush out multiple updates to patch various zero-day exploits.
We may never achieve zero zero-day exploits, but faster discovery and patching is the next best thing.
“We want it to be more costly, more resource-intensive, and overall more difficult for attackers to use 0-day capabilities,” Stone summarises.
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