📝 Azure Subscription Activity Log Alert for Delete Network Security Group does not exist 🟢

• Contextual name: 📝 Activity Log Alert for Delete Network Security Group does not exist 🟢
• ID: /ce/ca/azure/subscription/activity-log-alert-for-delete-nsg
• Located in: 📁 Azure Subscription

Flags

• 🟢 Policy with categories
• 🟢 Policy with type
• 🟢 Production policy

Our Metadata

• Policy Type: COMPLIANCE_POLICY
• Policy Category:
  • SECURITY

Similar Policies

• Cloud Conformity
  • Create Alert for 'Delete Network Security Group' Events
• Internal
  • dec-x-c397d3ca

Similar Internal Rules

Rule	Policies	Flags
✉️ dec-x-c397d3ca	2

Logic

• 🧠 prod.logic.yaml 🟢
  • 📗 Azure Subscription
  • 🔌 Azure Activity Log Alert - object.extracts.yaml
  • 🧪 test-data.json

Description

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Description

Create an activity log alert for the Delete Network Security Group event.

Rationale

Monitoring for "Delete Network Security Group" events gives insight into network access changes and may reduce the time it takes to detect suspicious activity.

Audit

This policy evaluates Azure Subscriptions for the presence of an Azure Activity Log Alert that captures Delete Network Security Group events. A subscription is marked as INCOMPLIANT if it does not have an Activity Log Alert whose Condition JSON filters on the Microsoft.Network/networkSecurityGroups/delete operation.

Default Value

By default, no monitoring alerts are created.

References

1. https://azure.microsoft.com/en-us/updates/classic-alerting-monitoring-retirement
2. https://docs.microsoft.com/en-in/azure/azure-monitor/platform/alerts-activity-log
3. https://docs.microsoft.com/en-in/rest/api/monitor/activitylogalerts/createorupdate
4. https://docs.microsoft.com/en-in/rest/api/monitor/activitylogalerts/listbysubscriptionid

... see more

Remediation

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Remediation

From Azure Portal

1. Navigate to the Monitor blade.
2. Select Alerts.
3. Select Create.
4. Select Alert rule.
5. Choose a subscription.
6. Select Apply.
7. Select the Condition tab.
8. Click See all signals.
9. Select Delete Network Security Group (Network Security Group).
10. Click Apply.
11. Select the Actions tab.
12. Click Select action groups to select an existing action group, or Create action group to create a new action group.
13. Follow the prompts to choose or create an action group.
14. Select the Details tab.
15. Select a Resource group, provide an Alert rule name and an optional Alert rule description.
16. Click Review + create.
17. Click Create.

From Azure CLI

az monitor activity-log alert create --resource-group "<resource group name>" --condition category=Administrative and operationName=Microsoft.Network/networkSecurityGroups/delete and level=<verbose | information | warning | error | critical> --scope "/subscriptions/<subscription ID>" --name "<activity log rule name>" --subscription <subscription id> --action-group <action group ID>

... [see more](remediation.md)

policy.yaml

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Linked Framework Sections

Section	Sub Sections	Internal Rules	Policies	Flags
💼 APRA CPG 234 → 💼 16b situational awareness and intelligence;		6	7
💼 APRA CPG 234 → 💼 36a change management —information security is addressed as part of the change management process and the information asset inventory is updated;		7	8
💼 APRA CPG 234 → 💼 44b deletion or corruption of both production and backup data, either through malicious intent, user error or system malfunction;		6	7
💼 APRA CPG 234 → 💼 67b scanning for unauthorised hardware, software and changes to configurations;		7	8
💼 CIS Azure v1.1.0 → 💼 5.2.3 Ensure that Activity Log Alert exists for Delete Network Security Group		1	1
💼 CIS Azure v1.3.0 → 💼 5.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group - Level 1 (Automated)		1	1
💼 CIS Azure v1.4.0 → 💼 5.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group - Level 1 (Automated)		1	1
💼 CIS Azure v1.5.0 → 💼 5.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group - Level 1 (Automated)		1	1
💼 CIS Azure v2.0.0 → 💼 5.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group - Level 1 (Automated)		1	1
💼 CIS Azure v2.1.0 → 💼 5.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group - Level 1 (Automated)		1	1
💼 CIS Azure v3.0.0 → 💼 6.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group (Automated)			1
💼 CIS Azure v4.0.0 → 💼 7.1.2.4 Ensure that Activity Log Alert exists for Delete Network Security Group (Automated)			1
💼 Cloudaware Framework → 💼 Alerting and Notification			26
💼 FedRAMP High Security Controls → 💼 AC-6(9) Log Use of Privileged Functions (M)(H)		7	26
💼 FedRAMP High Security Controls → 💼 AU-3(1) Additional Audit Information (M)(H)			14
💼 FedRAMP High Security Controls → 💼 AU-6 Audit Record Review, Analysis, and Reporting (L)(M)(H)	6	20	30
💼 FedRAMP High Security Controls → 💼 AU-9 Protection of Audit Information (L)(M)(H)	3	8	10
💼 FedRAMP High Security Controls → 💼 AU-11 Audit Record Retention (L)(M)(H)		16	18
💼 FedRAMP High Security Controls → 💼 AU-12 Audit Record Generation (L)(M)(H)	2		65
💼 FedRAMP High Security Controls → 💼 CM-5(1) Automated Access Enforcement and Audit Records (M)(H)		7	8
💼 FedRAMP High Security Controls → 💼 SI-4(20) Privileged Users (H)		48	51
💼 FedRAMP Low Security Controls → 💼 AU-6 Audit Record Review, Analysis, and Reporting (L)(M)(H)			24
💼 FedRAMP Low Security Controls → 💼 AU-9 Protection of Audit Information (L)(M)(H)			10
💼 FedRAMP Low Security Controls → 💼 AU-11 Audit Record Retention (L)(M)(H)			18
💼 FedRAMP Low Security Controls → 💼 AU-12 Audit Record Generation (L)(M)(H)			65
💼 FedRAMP Moderate Security Controls → 💼 AC-6(9) Log Use of Privileged Functions (M)(H)			26
💼 FedRAMP Moderate Security Controls → 💼 AU-3(1) Additional Audit Information (M)(H)			14
💼 FedRAMP Moderate Security Controls → 💼 AU-6 Audit Record Review, Analysis, and Reporting (L)(M)(H)	2		30
💼 FedRAMP Moderate Security Controls → 💼 AU-9 Protection of Audit Information (L)(M)(H)	1		10
💼 FedRAMP Moderate Security Controls → 💼 AU-11 Audit Record Retention (L)(M)(H)			18
💼 FedRAMP Moderate Security Controls → 💼 AU-12 Audit Record Generation (L)(M)(H)			65
💼 FedRAMP Moderate Security Controls → 💼 CM-5(1) Automated Access Enforcement and Audit Records (M)(H)			8
💼 ISO/IEC 27001:2013 → 💼 A.12.4.1 Event logging		15	18
💼 ISO/IEC 27001:2013 → 💼 A.12.4.3 Administrator and operator logs		7	8
💼 ISO/IEC 27001:2013 → 💼 A.16.1.2 Reporting information security events		9	10
💼 ISO/IEC 27001:2022 → 💼 5.28 Collection of evidence		14	21
💼 ISO/IEC 27001:2022 → 💼 8.15 Logging		18	34
💼 NIST CSF v1.1 → 💼 DE.AE-2: Detected events are analyzed to understand attack targets and methods		18	23
💼 NIST CSF v1.1 → 💼 DE.AE-3: Event data are collected and correlated from multiple sources and sensors		18	37
💼 NIST CSF v1.1 → 💼 DE.CM-1: The network is monitored to detect potential cybersecurity events		18	41
💼 NIST CSF v1.1 → 💼 DE.CM-3: Personnel activity is monitored to detect potential cybersecurity events		20	26
💼 NIST CSF v1.1 → 💼 DE.CM-7: Monitoring for unauthorized personnel, connections, devices, and software is performed		18	23
💼 NIST CSF v1.1 → 💼 DE.DP-4: Event detection information is communicated		29	32
💼 NIST CSF v1.1 → 💼 ID.SC-4: Suppliers and third-party partners are routinely assessed using audits, test results, or other forms of evaluations to confirm they are meeting their contractual obligations		15	19
💼 NIST CSF v1.1 → 💼 PR.PT-1: Audit/log records are determined, documented, implemented, and reviewed in accordance with policy		16	32
💼 NIST CSF v1.1 → 💼 RS.AN-1: Notifications from detection systems are investigated		18	23
💼 NIST CSF v1.1 → 💼 RS.CO-2: Incidents are reported consistent with established criteria		19	22
💼 NIST CSF v1.1 → 💼 RS.CO-3: Information is shared consistent with response plans		16	17
💼 NIST CSF v2.0 → 💼 DE.AE-02: Potentially adverse events are analyzed to better understand associated activities			31
💼 NIST CSF v2.0 → 💼 DE.AE-03: Information is correlated from multiple sources			46
💼 NIST CSF v2.0 → 💼 DE.AE-06: Information on adverse events is provided to authorized staff and tools			32
💼 NIST CSF v2.0 → 💼 DE.AE-07: Cyber threat intelligence and other contextual information are integrated into the analysis			37
💼 NIST CSF v2.0 → 💼 DE.CM-01: Networks and network services are monitored to find potentially adverse events			115
💼 NIST CSF v2.0 → 💼 DE.CM-03: Personnel activity and technology usage are monitored to find potentially adverse events			81
💼 NIST CSF v2.0 → 💼 DE.CM-06: External service provider activities and services are monitored to find potentially adverse events			31
💼 NIST CSF v2.0 → 💼 DE.CM-09: Computing hardware and software, runtime environments, and their data are monitored to find potentially adverse events			134
💼 NIST CSF v2.0 → 💼 GV.SC-07: The risks posed by a supplier, their products and services, and other third parties are understood, recorded, prioritized, assessed, responded to, and monitored over the course of the relationship			26
💼 NIST CSF v2.0 → 💼 ID.RA-10: Critical suppliers are assessed prior to acquisition			26
💼 NIST CSF v2.0 → 💼 RC.CO-04: Public updates on incident recovery are shared using approved methods and messaging			22
💼 NIST CSF v2.0 → 💼 RS.CO-02: Internal and external stakeholders are notified of incidents			30
💼 NIST CSF v2.0 → 💼 RS.CO-03: Information is shared with designated internal and external stakeholders			18
💼 NIST CSF v2.0 → 💼 RS.MA-02: Incident reports are triaged and validated			24
💼 NIST SP 800-53 Revision 5 → 💼 AU-3(1) Content of Audit Records _ Additional Audit Information		13	14
💼 NIST SP 800-53 Revision 5 → 💼 AU-12 Audit Record Generation	4	47	65
💼 SOC 2 → 💼 CC5.2-3 Establishes Relevant Security Management Process Controls Activities		15	35