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Reduce alert noise: Security Hub HIGH/CRITICAL only #41

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Merged
Alexanderamiri merged 1 commit into from
Mar 12, 2026
Merged

Reduce alert noise: Security Hub HIGH/CRITICAL only #41

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8 changes: 5 additions & 3 deletions terraform/platform/monitoring/main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -440,18 +440,20 @@ resource "aws_securityhub_standards_subscription" "aws_foundational" {
depends_on = [aws_securityhub_account.main]
}

# Route Security Hub findings with severity >= MEDIUM to security SNS
# Route Security Hub findings with severity >= HIGH to security SNS.
# MEDIUM findings are too noisy (SSL, logging, tags) — these are covered
# by Config rules and compliance reporter already.
resource "aws_cloudwatch_event_rule" "securityhub_findings" {
name = "${var.project}-securityhub-findings"
description = "Route Security Hub findings (MEDIUM and above) to SNS"
description = "Route Security Hub findings (HIGH and above) to SNS"

event_pattern = jsonencode({
source = ["aws.securityhub"]
detail-type = ["Security Hub Findings - Imported"]
detail = {
findings = {
Severity = {
Label = ["MEDIUM", "HIGH", "CRITICAL"]
Label = ["HIGH", "CRITICAL"]
}
}
}
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