The Center for Internet Security (CIS) controls provide a solid basis on which to organize any security program. The final updates for three Windows 10 operating systems are coming this month. Microsoft was back on track in April, releasing a much larger number of CVE fixes for their operating systems than in the previous months. Apple has released security updates iCloud 12.3, macOS Big Sur 11.3.1 and Safari 14.1 over the past two weeks. Google did release a security update 90.0.93 on April 26 which addressed the zero day for CVE-2021-21224.
Source: https://www.helpnetsecurity.com/2021/05/07/may-2021-patch-tuesday-forecast-spring-cleaning-is-in-order/