Which of the following actions would resolve this issue?
In CloudTrail, verify that the trail logging bucket has a log prefix configured.
In Amazon SNS, determine whether the ג€Account spend limitג€ has been reached for this alert.
In SNS, ensure that the subscription used by these alerts has not been deleted.
In CloudWatch, verify that the alarm threshold ג€consecutive periodsג€ value is equal to, or greater than 1.
Explanations:
The log prefix configuration in CloudTrail determines how logs are organized in the S3 bucket, but it is not related to the delivery of CloudWatch alerts or SNS notifications.
The “Account spend limit” in Amazon SNS relates to charges for SMS messages, not the delivery of CloudWatch alerts. This is unlikely to be the cause of missing email alerts.
If the SNS subscription used for sending alerts has been deleted, then no alerts will be sent to the Security Operations mailbox. Ensuring the subscription exists and is active would resolve the issue.
The “consecutive periods” setting in CloudWatch alarms is used to configure how long the metric needs to meet the threshold before an alarm is triggered, but it does not directly affect the delivery of alerts to an SNS topic.