Google releases security updates for February 2020. All supported Pixel devices running Android 10 will receive these software updates as part of the February 2020 OTA, which begins rolling out to users today. We encourage you to check your Android version and update to receive the latest features.
Pixel 2 (XL): QQ1A.200205.002
Pixel 3 (XL): QQ1A.200205.002
Pixel 3a (XL): QQ1A.200205.002
Pixel 4 (XL):
Select JP & TW carriers: QQ1C.200205.002
JP (NTT Docomo): QQ1D.200205.002
The February 2020 security patch is available for the Pixel 3, Pixel 3a, and Pixel 4 family of devices. The update should be available for download on your device over the next few days. You can also manually download the update by going to Settings -> System -> Advanced -> System Update and checking for updates manually.
Details of security fixes are found in this link :