diff --git a/README.md b/README.md
index 513d927..8fe84f9 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,8 @@ ddcli appsec custom-rules list
 ddcli appsec exclusion-filters list
 ddcli errors search --query 'service:api' --track trace --from now-1h --to now
 ddcli errors get ISSUE_ID
+ddcli security signals search --query 'team:bandzoogle' --from now-1h --to now
+ddcli security signals get SIGNAL_ID
 ddcli cost analyze --group-by service --from now-30d --to now-2d --limit 25
 ddcli cost analyze --metric aws.cost.amortized --filter 'env:prod' --group-by region
 ddcli cost accounts list --provider all
diff --git a/bin/build b/bin/build
index 3389575..58576a9 100755
--- a/bin/build
+++ b/bin/build
@@ -25,6 +25,7 @@ echo "==> smoke testing"
 "$output" appsec blocked-rules summary --help >/dev/null
 "$output" appsec custom-rules list --help >/dev/null
 "$output" errors search --help >/dev/null
+"$output" security signals search --help >/dev/null
 "$output" cost analyze --help >/dev/null
 "$output" scopes --help >/dev/null
 
diff --git a/cmd/scopes.go b/cmd/scopes.go
index e792de7..f13ebb7 100644
--- a/cmd/scopes.go
+++ b/cmd/scopes.go
@@ -170,6 +170,12 @@ func requiredScopes() []scopeInfo {
 			Permission: "error_tracking_read",
 			OAuthScope: "error_tracking_read",
 		},
+		{
+			Command:    "security signals search|get",
+			API:        "Cloud SIEM Security Signals API",
+			Permission: "security_monitoring_signals_read",
+			OAuthScope: "security_monitoring_signals_read",
+		},
 		{
 			Command:    "cost analyze",
 			API:        "Metrics API with cloud_cost data source",
diff --git a/cmd/security.go b/cmd/security.go
new file mode 100644
index 0000000..4e22584
--- /dev/null
+++ b/cmd/security.go
@@ -0,0 +1,131 @@
+package cmd
+
+import (
+	"time"
+
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadog"
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadogV2"
+	"github.com/bandzoogle/datadog-cli/internal/output"
+	"github.com/bandzoogle/datadog-cli/internal/timeutil"
+	"github.com/spf13/cobra"
+)
+
+var securityCmd = &cobra.Command{
+	Use:   "security",
+	Short: "Query Datadog Cloud SIEM security data",
+}
+
+var securitySignalsCmd = &cobra.Command{
+	Use:   "signals",
+	Short: "Search and retrieve Cloud SIEM security signals",
+}
+
+var securitySignalsSearchCmd = &cobra.Command{
+	Use:   "search",
+	Short: "Search Cloud SIEM security signals",
+	Example: `  ddcli security signals search --query 'team:bandzoogle' --from now-1h --to now
+  ddcli security signals search --query 'status:high' --limit 25 --pretty`,
+	PreRunE: func(cmd *cobra.Command, args []string) error {
+		return requireStringFlag(cmd, "query")
+	},
+	RunE: runSecuritySignalsSearch,
+}
+
+var securitySignalsGetCmd = &cobra.Command{
+	Use:   "get <signal-id>",
+	Short: "Get a Cloud SIEM security signal",
+	Args:  cobra.ExactArgs(1),
+	RunE:  runSecuritySignalsGet,
+}
+
+func init() {
+	rootCmd.AddCommand(securityCmd)
+	securityCmd.AddCommand(securitySignalsCmd)
+	securitySignalsCmd.AddCommand(securitySignalsSearchCmd, securitySignalsGetCmd)
+
+	securitySignalsSearchCmd.Flags().String("query", "", "Security signal search query")
+	securitySignalsSearchCmd.Flags().String("from", "now-1h", "Start time, e.g. now-1h or RFC3339")
+	securitySignalsSearchCmd.Flags().String("to", "now", "End time, e.g. now or RFC3339")
+	securitySignalsSearchCmd.Flags().Int32("limit", 50, "Maximum signals to return")
+	securitySignalsSearchCmd.Flags().String("cursor", "", "Pagination cursor from a previous response")
+}
+
+func runSecuritySignalsSearch(cmd *cobra.Command, args []string) error {
+	client, err := datadogClient(cmd)
+	if err != nil {
+		return err
+	}
+	query, _ := cmd.Flags().GetString("query")
+	fromValue, _ := cmd.Flags().GetString("from")
+	toValue, _ := cmd.Flags().GetString("to")
+	limit, _ := cmd.Flags().GetInt32("limit")
+	cursor, _ := cmd.Flags().GetString("cursor")
+	now := time.Now()
+	from, err := timeutil.Parse(fromValue, now)
+	if err != nil {
+		return err
+	}
+	to, err := timeutil.Parse(toValue, now)
+	if err != nil {
+		return err
+	}
+
+	body := buildSecuritySignalsSearchRequest(query, from, to, limit, cursor)
+	api := datadogV2.NewSecurityMonitoringApi(client.API)
+	resp, httpResp, err := api.SearchSecurityMonitoringSignals(
+		client.Context,
+		*datadogV2.NewSearchSecurityMonitoringSignalsOptionalParameters().WithBody(body),
+	)
+	if err != nil {
+		return apiError("security signals search", httpResp, err)
+	}
+
+	return output.WriteEnvelope(cmd.OutOrStdout(),
+		map[string]any{"command": "security signals search", "filter": query},
+		meta(client.Site, map[string]any{
+			"from":   fromValue,
+			"to":     toValue,
+			"limit":  limit,
+			"cursor": cursor,
+		}, httpResp),
+		resp,
+		outputOptions(),
+	)
+}
+
+func buildSecuritySignalsSearchRequest(query string, from, to time.Time, limit int32, cursor string) datadogV2.SecurityMonitoringSignalListRequest {
+	body := *datadogV2.NewSecurityMonitoringSignalListRequest()
+	body.Filter = &datadogV2.SecurityMonitoringSignalListRequestFilter{
+		From:  datadog.PtrTime(from),
+		Query: datadog.PtrString(query),
+		To:    datadog.PtrTime(to),
+	}
+	body.Page = &datadogV2.SecurityMonitoringSignalListRequestPage{
+		Limit: datadog.PtrInt32(limit),
+	}
+	if cursor != "" {
+		body.Page.Cursor = datadog.PtrString(cursor)
+	}
+	body.Sort = datadogV2.SECURITYMONITORINGSIGNALSSORT_TIMESTAMP_DESCENDING.Ptr()
+	return body
+}
+
+func runSecuritySignalsGet(cmd *cobra.Command, args []string) error {
+	client, err := datadogClient(cmd)
+	if err != nil {
+		return err
+	}
+	signalID := args[0]
+
+	api := datadogV2.NewSecurityMonitoringApi(client.API)
+	resp, httpResp, err := api.GetSecurityMonitoringSignal(client.Context, signalID)
+	if err != nil {
+		return apiError("security signals get", httpResp, err)
+	}
+	return output.WriteEnvelope(cmd.OutOrStdout(),
+		map[string]any{"command": "security signals get", "signal_id": signalID},
+		meta(client.Site, nil, httpResp),
+		resp,
+		outputOptions(),
+	)
+}
diff --git a/cmd/security_test.go b/cmd/security_test.go
new file mode 100644
index 0000000..23900d4
--- /dev/null
+++ b/cmd/security_test.go
@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"testing"
+	"time"
+
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadogV2"
+)
+
+func TestBuildSecuritySignalsSearchRequest(t *testing.T) {
+	from := time.Date(2026, 7, 23, 15, 0, 0, 0, time.UTC)
+	to := from.Add(time.Hour)
+
+	got := buildSecuritySignalsSearchRequest("team:bandzoogle", from, to, 25, "next-page")
+
+	if got.Filter == nil || got.Filter.GetQuery() != "team:bandzoogle" {
+		t.Fatalf("unexpected filter: %#v", got.Filter)
+	}
+	if !got.Filter.GetFrom().Equal(from) || !got.Filter.GetTo().Equal(to) {
+		t.Fatalf("unexpected time range: %s to %s", got.Filter.GetFrom(), got.Filter.GetTo())
+	}
+	if got.Page == nil || got.Page.GetLimit() != 25 || got.Page.GetCursor() != "next-page" {
+		t.Fatalf("unexpected page: %#v", got.Page)
+	}
+	if got.Sort == nil || *got.Sort != datadogV2.SECURITYMONITORINGSIGNALSSORT_TIMESTAMP_DESCENDING {
+		t.Fatalf("unexpected sort: %#v", got.Sort)
+	}
+}
+
+func TestBuildSecuritySignalsSearchRequestOmitsEmptyCursor(t *testing.T) {
+	now := time.Now()
+	got := buildSecuritySignalsSearchRequest("*", now.Add(-time.Hour), now, 50, "")
+
+	if got.Page == nil {
+		t.Fatal("expected page")
+	}
+	if got.Page.Cursor != nil {
+		t.Fatalf("expected nil cursor, got %q", got.Page.GetCursor())
+	}
+}
diff --git a/projects/security-signals.md b/projects/security-signals.md
new file mode 100644
index 0000000..df4d694
--- /dev/null
+++ b/projects/security-signals.md
@@ -0,0 +1,23 @@
+# Datadog Security Signals
+
+Status: Implemented and live-tested
+Last Updated: 2026-07-23
+Branch: `feat/security-signals`
+Worktree: `/Users/jsierles/bz/datadog-cli-security-signals`
+
+## Progress
+
+- [x] Add read-only security signal search/get commands.
+- [x] Document `security_monitoring_signals_read` and usage.
+- [x] Test against the reported ECS registration signal.
+- [x] Confirm the signal is a real anomaly across three OpenResty instances, not a stale re-notification.
+
+## Next Steps
+
+1. Review and merge the feature branch.
+2. Publish a release so Zooglerails `bin/dd` downloads the new commands.
+3. Verify the ECS-agent bootstrap fix is applied to every non-ECS AMI consumer.
+
+## Related Resources
+
+- Conversation ID: `fc6de74b-840e-4af9-9e57-d318e37d7b01`