Links:
The Nigerian government scores this week's S3 Bucket Negligence Award

New Air-Gap Attack Uses SATA Cable as an Antenna to Transfer Radio Signals
Automatically block suspicious DNS activity with Amazon GuardDuty and Route 53 Resolver DNS Firewall

Use Security Hub custom actions to remediate S3 resources based on Macie discovery results 
There has been significant improvement to the AWS IAM documentation around IAM best practices.
Artillery lets you use Lambdas for open source load testing.