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    Security Center:UpdateDetectionRule

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    Security Center:UpdateDetectionRule

    Last Updated:Dec 08, 2025

    Updates a detection rule.

    Operation description

    Because this operation uses complex request parameters, a supporting tool class is provided to assist with the JSON configuration. For an example, see the Demo.

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    RAM authorization

    The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

    • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

    • API: The API that you can call to perform the action.

    • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

    • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

      • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

      • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

    • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

    • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

    Action

    Access level

    Resource type

    Condition key

    Dependent action

    yundun-sas:UpdateDetectionRule

    update

    *DetectionRule

    acs:yundun-sas::{#accountId}:detection/{#DetectionRuleId}

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    RegionId

    string

    No

    The region of the Data Management center for Threat Analysis. Select the region where your assets are located. Valid values:

    • cn-hangzhou: The Chinese mainland.

    • ap-southeast-1: Regions outside the Chinese mainland.

    cn-hangzhou
    Lang

    string

    No

    The language of the response. Valid values:

    • zh (default): Chinese.

    • en: English.

    zh
    DetectionRuleId

    string

    Yes

    The ID of the detection rule.

    jndi-attack-success_http_dns
    DetectionRuleName

    string

    No

    The name of the detection rule.

    CTDR Port Scan Behavior
    DetectionRuleDescription

    string

    No

    The description of the detection rule.

    Check the enumeration behavior of local system groups. An attacker may attempt to find the Local Systems group and its permission settings.
    DetectionRuleType

    string

    Yes

    The type of the detection rule. Valid values:

    • preset: a preset detection rule.

    • custom: a custom detection rule.

    • custom_template: a rule template.

    custom
    DetectionRuleStatus

    string

    No

    The status of the detection rule.

    enabled
    AlertType

    string

    No

    The type of the alert.

    siem_rule_type_alert_storm
    AlertLevel

    string

    No

    The threat level of the alert. Valid values:

    • 5: Critical.

    • 4: Important.

    • 3: Medium.

    • 2: Low.

    • 1: Informational.

    1
    AlertTacticId

    string

    No

    The ATT&CK tactic ID of the alert.

    TA0042
    AlertAttCk

    string

    No

    The ATT&CK tactic of the alert.

    Discovery
    DetectionExpressionType

    string

    No

    The type of the detection expression.

    sql
    DetectionExpressionContent

    string

    No

    The content of the detection expression.

    *|set session mode=scan;SELECT * FROM log WHERE schema = 'PROCESS_START_ACTIVITY' AND ( proc_path LIKE '%/groups' OR ( ( proc_path LIKE '%/cat' OR proc_path LIKE '%/head' OR proc_path LIKE '%/tail' OR proc_path LIKE '%/more' ) AND cmdline LIKE '%/etc/group%' ) )
    LogCategoryId

    string

    No

    The ID of the log normalization category.

    NETWORK_CATEGORY
    LogSchemaId

    string

    No

    The ID of the log normalization schema.

    API_RISK_ACTIVITY
    AlertSchemaId

    string

    No

    The ID of the alert template for the detection rule.

    ALERT_ACTIVITY
    ScheduleType

    string

    No

    The scheduling type. Valid values:

    • fixed_rate: fixed interval.

    • cron: cron expression.

    fixed_rate
    ScheduleExpression

    string

    No

    The cron expression for scheduling. This parameter is required when you set `ScheduleType` to `cron`.

    1h
    ScheduleMaxRetries

    integer

    No

    The maximum number of retries after a timeout. The value must be between 1 and 100.

    1
    ScheduleBeginTime

    integer

    No

    The start time for scheduling. This is a 13-digit UNIX timestamp.

    1733269771123
    ScheduleWindow

    string

    No

    The length of the scheduling window.

    5m
    ScheduleMaxTimeout

    integer

    No

    The maximum timeout period. Unit: seconds. The value must be between 60 and 1800.

    60
    AlertThresholdPeriod

    string

    No

    The period for the alert threshold.

    5m
    AlertThresholdCount

    integer

    No

    The number of alerts for the alert threshold.

    10
    AlertThresholdGroup

    string

    No

    The fields for the alert threshold. Separate multiple fields with commas.

    alert_type,ip
    IncidentAggregationType

    string

    No

    The type of event aggregation. Valid values:

    • none: Events are not generated.

    • graph_compute: graph computing (supported by predefined rules).

    • expert: expert rule.

    • passthrough: pass-through (one-to-one mapping with alerts).

    • window: window-based aggregation of similar events.

    window
    IncidentAggregationExpression

    string

    No

    The configuration of the event aggregation period.

    60m
    PlaybookParameters

    string

    No

    The custom parameters for the playbook.

    { "ip": { "ip": "124.23.*.*" } }
    PlaybookUuid

    string

    No

    The unique ID of the playbook.

    31568394-7a86-487c-b8ec-b3f42b59****
    EntityMappings

    string

    No

    The entity mapping configuration.

    [{\"NormalizationSchemaId\":\"host\",\"NormalizationFieldMappings\":[{\"NormalizationFieldName\":\"uuid\",\"MappingFieldName\":\"host\",\"NormalizationFieldType\":\"varchar\"}]}]
    AlertName

    string

    No

    The name of the alert. You can use `$$` to reference fields from the query output.

    Detected high-frequency multi-type network attacks from $src_ip$
    AlertDescription

    string

    No

    The description of the alert. You can use `$$` to reference fields from the query output.

    Alert from: $product_code$, detected network attack from $src_ip$, affected assets include: $dst_ip$

    Response elements

    Element

    Type

    Description

    Example

    object

    The response body.

    RequestId

    string

    The ID of the request.

    B88A2D41-87B8-537E-A7D3-3416A39F****

    Examples

    Success response

    JSON format

    {
  "RequestId": "B88A2D41-87B8-537E-A7D3-3416A39F****"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 IdempotentParameterMismatch The request uses the same client token as a previous, but non-identical request. Do not reuse a client token with different requests, unless the requests are identical.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.