Security Center:Log management

Enable log management

You can enable the log management feature only by using either the subscription or pay-as-you-go billing method. For more information about billing, see Billing.

1. Log on to Security Center console.

2. In the left-side navigation pane, choose Detection and Response > Log Management. In the upper-left corner of the console, select the region where the asset to be protected is located: Chinese Mainland or Outside Chinese Mainland.

   If you have purchased Agentic SOC log ingestion traffic on a subscription basis or enabled pay-as-you-go for Agentic SOC, the left-side navigation pane entry changes to Agentic SOC > Logs.

3. On the Log Management page, click Subscribe (Annual/Monthly) or Activate Pay-as-you-go.

   Note

   If you have purchased Agentic SOC log ingestion traffic on a subscription basis or enabled pay-as-you-go for Agentic SOC, click Enable Pay-as-you-go for Log Management in the upper-right corner of the current page, or upgrade to purchase Agentic SOC log storage capacity. For more information, see Upgrade or downgrade.

   • To enable subscription mode: On the purchase page, set Purchase or Not for Agentic SOC to Yes, select the log storage capacity that you need, and click Order Now to complete the payment.

     You can purchase other Security Center features as needed. For more information, see Purchase guide.

   • To enable pay-as-you-go mode: In the dialog box, read the billing rules, select a storage region, and then click Activate and Authorize.

4. After the feature is enabled, return to the Log Management page and check whether the service status is Enabled. Log data will start being delivered to SLS within a few minutes.

Disable log management

1. Log on to Security Center console.

2. In the left-side navigation pane, choose Agentic SOC > Logs. In the upper-left corner of the console, select the region where the asset to be protected is located: Chinese Mainland or Outside Chinese Mainland.

3. On the Log Management page, make sure that Log Usage is 0 GB.

   If the log usage is not 0, click Delete in the upper-right corner of the current page, wait for the log usage to be cleared, and then proceed to the next step.

4. You can disable the log management feature in the following ways.

   • If you use subscription mode, disable log management by using either of the following methods:

     • Method 1: Downgrade

       1. On the Overview page, click Change Configuration > Downgrade to go to the Downgrade page.

       2. On the Order Downgrade tab, set Agentic SOC (Log Storage Capacity) in the Agentic SOC section to 0 GB.

       3. Read and select the Security Center Service Agreement, and then click Order Now.

     • Method 2: Unsubscribe from the purchased Security Center instance. For more information, see Unsubscribe from a subscription.

   • If you use pay-as-you-go mode, go to the Overview page of the Security Center console, find the Enable Pay-as-You-Go Service section, and turn off the Log Management switch.

     Important

     After you disable the log management switch, log delivery is automatically disabled, and the corresponding Logstore is deleted. Deleted log data cannot be restored. We recommend that you proceed with caution.

Notes for users who only purchase log ingestion traffic or enable pay-as-you-go

If you have purchased Agentic SOC log ingestion traffic on a subscription basis or enabled pay-as-you-go for Agentic SOC but have not purchased log storage capacity, you can query some standardized logs on the Log Management page. The supported logs come from access policies whose Standardization Method is set to Scan Query.

In this scenario, Security Center logs cannot be delivered or viewed, and neither can the standardized logs from access policies whose Standardization Method is set to Real-time Consumption. For more information about the features supported by different billing items, see Log management billing overview.

Enable delivery

After you purchase log storage capacity, Agentic SOC enables delivery for all Security Center log types by default. If you have not purchased the corresponding value-added services, such as application protection or malicious file detection, the delivery switches for the corresponding log types remain disabled.

You can click Log Management Settings on the Log Management page to view and configure the delivery status of each log type.

On the log management settings page, the Basic Settings area displays the log delivery region as China (Shanghai) and the log delivery language as Chinese. In the Log Storage Management area, on the Security Center Logs tab, the host log types include:

• Brute-force attacks (aegis-log-crack)

• Process snapshots (aegis-snapshot-process)

• DNS requests (aegis-log-dns-query)

• Account snapshots (aegis-snapshot-host)

• Client events (aegis-log-client)

• Logon logs (aegis-log-login)

• Network connections (aegis-log-network)

• Network snapshots (aegis-snapshot-port)

• Process startup (aegis-log-process)

All delivery switches are turned on, and the log retention period is 180 days.

Query logs

1. In the left-side navigation pane, choose Agentic SOC > Logs. In the upper-left corner of the console, select the region where the asset to be protected is located: Chinese Mainland or Outside Chinese Mainland.

2. In the upper-left corner of the Log Management page, click Security Center Logs and select the log type that you want to view.

3. Set a query time range, enter query statements to retrieve logs, and view the log analysis data.

   The log query methods used by Agentic SOC log management are the same as those used by Security Center log analysis. For more information, see Log analysis.

Delivery

• Standardized logs are generated after Agentic SOC consumes and analyzes ingested logs and standardizes them into a common schema. Standardized logs contain standard fields that are mapped by SPL (Search Processing Language) syntax. You cannot enable or disable the delivery of standardized logs. Delivery is enabled in the following scenarios:

  • When the Standardization Method of an access policy is set to Real-time Consumption, Agentic SOC delivers the standardized logs to the corresponding Logstore by standardized category by default. The log delivery task is created when you create the access policy.

  • After you create custom rules, the standardized alert logs generated by the custom rules are also delivered. Examples include EDR alert logs and firewall alert logs.

• If Extended Field Ingestion of a standardized rule is set to Retain As Is, the unmapped original fields are also included in the standardized logs, stored in a flattened Key-Value format. For more information, see View log format standardization V2.

View log reference count

1. On the Log Management page, click Log Settings.

2. On the Log Settings panel, you can view the reference count of standardized structures on the Standardized Log tab.

   Note

   The reference count indicates the number of access policies that use the corresponding standardized category and structure and whose Standardization Method is Real-time Consumption.

Query logs

Agentic SOC supports searching logs by standardized log structure and querying data across multiple Logstores by using datasets (StoreView). For more information about Logstore query and analysis, see Query and analyze logs.

Modify log retention period

The default retention period for delivered logs is 180 days. You can modify the log retention period as needed.

1. In the left-side navigation pane, choose Agentic SOC > Logs. In the upper-left corner of the console, select the region where the asset to be protected is located: Chinese Mainland or Outside Chinese Mainland.

2. In the upper-right corner of the Log Management page, click Log Settings.

3. On the Log Settings panel, on the Security Center Logs or Standardized Log tab, click the icon in the Log Retention Period (TTL) column to modify the log retention period.

Scale out or delete storage capacity

You can view the current log usage and total capacity on the Agentic SOC > Logs page, and scale out or clear log storage space as needed.

• Click Scale Out to purchase more log storage capacity.

  Make sure that log storage space is sufficient. If log storage space is full, new logs cannot be delivered.

• Click Delete to clear all storage space. It takes approximately 0 to 24 hours to clear the logs. Be patient during this process.

  Warning

  After storage space is cleared, log data cannot be restored. Export and back up logs before you clear storage space.

Reduce log delivery volume

If log storage costs are high, you can view the storage proportion of each log type and disable unnecessary log types to reduce the delivery volume and storage costs.

1. Log on to the SLS console and find the dedicated project of Security Center, which is named in the format aliyun-cloudsiem-data-{Alibaba Cloud account ID}-{RegionID}. In the query box of the Logstore, group and count logs by the __topic__ field to view the distribution of each log type and identify log types with high storage usage, such as logon logs, network connection logs, and process startup logs.

2. In the left-side navigation pane, choose Agentic SOC > Logs. In the upper-left corner of the console, select the region where the asset to be protected is located: Chinese Mainland or Outside Chinese Mainland.

3. On the Log Management page, click Log Settings.

4. On the Log Settings panel, switch to the Security Center Logs tab, and then turn off the delivery switch for the log type that you no longer want to deliver.

After log delivery is disabled, logs of the corresponding type are no longer delivered to SLS. Historical logs that are already stored are not affected and are automatically deleted after the original retention period expires. We recommend that you evaluate security compliance requirements before disabling a log type.

Why can't I enable pay-as-you-go for log management?

Any of the following reasons can prevent you from enabling pay-as-you-go for log management.

• Reason 1: You have purchased Agentic SOC log storage capacity or log analysis on a subscription basis.

  Solution:

  1. Unsubscribe from Agentic SOC log storage capacity purchased on a subscription basis or log analysis.

  2. Enable pay-as-you-go for log management.

• Reason 2: Agentic SOC uses the 1.0 architecture.

  Solution:

  1. Upgrade the Agentic SOC feature from 1.0 to 2.0.

  2. Enable pay-as-you-go for log management.

  Note

  If you decide not to upgrade to Agentic SOC 2.0 architecture for now but need to use log management, you can purchase Agentic SOC log storage capacity on a subscription basis.

• Reason 3: You purchased Agentic SOC log storage capacity on a subscription basis on or before April 26, 2024, and use Agentic SOC features.

  If you are one of these users, upgrade to the Agentic SOC 2.0 architecture. After the upgrade, you retain the same amount of Agentic SOC log storage capacity as previously purchased (subscription mode) and can use log management normally. To switch from subscription to pay-as-you-go, refer to the solution for Reason 1. For more information about the Agentic SOC architecture upgrade, see [Notice] Agentic SOC upgrade.

What is the difference between log analysis and log management?

Both log analysis and log management are security log query and analysis capabilities provided by Security Center. Compared with log analysis, log management not only provides delivery and analysis capabilities for logs from Security Center modules (such as vulnerabilities, security alerts, and client events), but also supports the delivery and storage of logs normalized by Agentic SOC. If you have classified protection compliance or other security log storage and analysis requirements, we recommend that you use log management.

• Log analysis is suitable for scenarios where you need to quickly view Security Center logs.

• Log management is suitable for scenarios where you need long-term storage, compliance auditing, and querying of standardized logs and network logs.

The following table describes the differences between the two features: