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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

Your security team converts CloudTrail logs into a CloudWatch custom metric that counts denied S3 API calls every 24 hours. They have 90 days of historical data that accurately reflects normal usage and want to receive an alert only when the daily count deviates more than three standard deviations from that baseline. Which CloudWatch capability lets them accomplish this with the least additional development effort?

  • Configure a standard CloudWatch alarm that fires when the metric exceeds a fixed threshold derived from the 90-day average.

  • Turn on Amazon GuardDuty S3 Protection so that it generates findings whenever unusual S3 access attempts occur.

  • Enable CloudWatch Anomaly Detection for the metric and create an alarm that triggers when data points are outside a three-sigma band.

  • Attach a CloudWatch Logs metric filter and subscribe it to an SNS topic that publishes every time the metric is updated.

ISC2 Systems Security Certified Practitioner (SSCP)
Risk Identification, Monitoring and Analysis
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