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NSM ICT Security Principles (Norway)
4.2.1: Review log data and collect relevant data on the incident to create a good basis for making decisions

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NSM ICT Security Principles (Norway)

4.2.1: Review log data and collect relevant data on the incident to create a good basis for making decisions

Task name
Priority
Status
Theme
Policy
Other requirements
Data system log review
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Security systems and logging
25
requirements

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Data system log review
1. Task description

The organization must be aware of the logs that accrue from the use of different data systems, whether generating the logs is the responsibility of the organization or the system provider. Logs record user actions as well as anomalies, errors, and security incidents.

The adequacy of log should be reviewed regularly. If necessary, log should be usable to determine the root causes for system incidents.

The first level response process to security incidents
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Incident management
Incident management and response
30
requirements

Examples of other requirements this task affects

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RS.RP-1: Incident response plan
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The first level response process to security incidents
1. Task description

The organization has defined a process and the team involved in responding promptly to security incidents and deciding on the appropriate actions.

The first level response process includes at least:

  • effectively seeking to confirm the identified incident
  • deciding on the need for immediate response
Classification of incidents
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Incident management
Incident management and response
5
requirements

Examples of other requirements this task affects

Article 18: Classification of ICT-related incidents and cyber threats
DORA
4.2.1: Review log data and collect relevant data on the incident to create a good basis for making decisions
NSM ICT-SP
4.2.2: Determine the severity level of the incident
NSM ICT-SP
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Classification of incidents
1. Task description

Organisations should conduct incident classification and impact assesment based on the following criteria:

  • Number of affected parties (clients, other organisations) and if possible the number of transactions that were affected.
  • Reputational impact
  • Duration and downtime caused by the incident
  • Geopgraphical spread of the affects
  • Possible data losses in relation to CIA values
  • Criticality of the services affected
  • Economic impact
Monitoring the use of the network and information systems to identify anomalies
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Security systems and logging
16
requirements

Examples of other requirements this task affects

8.16: Monitoring activities
ISO27k1 Full
6.11: Alusta- ja verkkopalvelujen tietoturvallinen käyttö tietosuojan ja varautumisen kannalta
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I-11: MONITASOINEN SUOJAAMINEN – POIKKEAMIEN HAVAINNOINTIKYKY JA TOIPUMINEN
Katakri 2020
5.2.3: Malware protection
TISAX
PR.PT-1: Audit/log records are determined, documented, implemented, and reviewed in accordance with policy.
CyFun
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Monitoring the use of the network and information systems to identify anomalies
1. Task description

Organization's data systems and network must be monitored to detect abnormal use. When anomalities are detected, the organization must take the necessary measures to assess the possibility of security incident.

The monitoring should utilize tools that enable real-time or regular monitoring, taking into account the organization's requirements. Monitoring practices should be able to manage large amounts of data, adapt to changing threat environment, and send alerts immediately when necessary.

Inclusion of the following sources in the monitoring system should be considered:

  • outbound and inbound network and data system traffic

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  • access to critical data systems, servers, network devices and the monitoring system itself
  • critical system and network configuration files
  • logs from security tools (e.g. antivirus, IDS, IPS, network filters, firewalls)

Organization must also establish procedures for identifying and correcting "false positive" results, including tuning monitoring software for more accurate anomaly detection.

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