IT Security Management

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DE - ES - Information Security Management

 

Overview

Objective: Information Security Management aims to ensure the confidentiality, integrity and availability of an organization's information, data and IT services. ITIL Security Management usually forms part of an organizational approach to security management which has a wider scope than the IT Service Provider.

Part of: Service Design

Process Owner: Information Security Manager

 

Process Description

ITIL V3 treats Information Security Management as part of the Service Design core volume, resulting in a better integration of this process into the Service Lifecycle (the previous ITIL version provided guidance on Security Management in a separate book). The process was updated to account for new information security concerns.

ITIL Security Management

ITIL does not provide a detailed explanation of all aspects of Information Security Management, as there are dedicated and more detailed standards available (see, for example, ISO 27001). Rather, ITIL highlights the most important activities and assists in identifying interfaces with other Service Management processes.

Following the introduction of Design Coordination in ITIL 2011 the information flows have been adapted. The process overview of ITIL Security Management (.JPG) is showing the most important interfaces (see Figure 1).

 

Sub-Processes

These are the Information Management sub-processes and their process objectives:

 

Design of Security Controls

Process Objective: To design appropriate technical and organizational measures in order to ensure the confidentiality, integrity, security and availability of an organization's assets, information, data and services.

<span="ITIL Security Management Testing">Security Testing

Process Objective: To make sure that all security mechanisms are subject to regular testing.

Management of Security Incidents

Process Objective: To detect and fight attacks and intrusions, and to minimize the damage incurred by security breaches.

Security Review

Process Objective: To review if security measures and procedures are still in line with risk perceptions from the business side, and to verify if those measures and procedures are regularly maintained and tested.

 

Definitions

The following ITIL terms and acronyms (information objects) are used in ITIL Security Management to represent process outputs and inputs:

 

Availability/ ITSCM/ Security Testing Schedule

A schedule for the regular testing of all availability, continuity and security mechanisms, jointly maintained by Availability, IT Service Continuity and Information Security Management.

Event Filtering and Correlation Rules

Rules and criteria used to determine if an Event is significant and to decide upon an appropriate response. Event Filtering and Correlation Rules are typically used by Event Monitoring systems. Some of those rules are defined during the Service Design stage, for example to ensure that Events are triggered when the required service availability is endangered.

Information Security Policy

The main Information Security Policy contains an outline of the approach to ensure the security of IT services and systems. It is typically complemented by a set of more specific underpinning policies, e.g. policies on e-mail usage or remote system access. The Information Security Policy includes a list of security-related risks and existing or planned Security Controls to address those risks.

Information Security Report

The Information Security Report provides other Service Management processes and IT Management with information related to Information Security issues.

Security Advisories

A list of known security vulnerabilities compiled from input by third-party product suppliers. The list contains instructions for preventive measures and for the handling of security breaches once they occur.

Security Alert

A warning produced by Information Security Management, typically released when outbreaks of security threats are foreseeable or already under way. The aim is to make sure that users and IT staff are able to identify any attacks and take appropriate precautions.

Security Management Information System (SMIS)

A virtual repository of all Information Security Management data, usually stored in multiple physical locations.

Test Report

A report of the preparation, progress and evaluation of a test, created for example during the various tests carried out by Availability, IT Service Continuity or Information Security Management.

Underpinning Information Security Policy

Underpinning Information Security Policies are specific policies complementing the main Information Security Policy by setting binding rules for the use of systems and information as well as for the use and delivery of services, with the aim of improving information security.

 

KPIs

• KPIs Information Security Management

 

Roles | Responsibilities

Information Security Manager - Process Owner

The Information Security Manager is responsible for ensuring the confidentiality, integrity and availability of an organization’s assets, information, data and IT services. He is usually involved in an organizational approach to Security Management which has a wider scope than the IT service provider, and includes handling of paper, building access, phone calls etc., for the entire organization.

 

Responsibility Matrix: ITIL Security Management
ITIL Role | Sub-Process	Information Security Manager	Service Owner[3]	Applications Analyst[3]	Technical Analyst[3]	IT Operator[3]	Facilities Manager[3]
Design of Security Controls	A[1]R[2]	R	R	R
Security Testing	AR				R	R
Management of Security Incidents	AR
Security Review	AR

 

Remarks

[1] A: Accountable according to the RACI Model: Those who are ultimately accountable for the correct and thorough completion of the Information Security Management process.

[2] R: Responsible according to the RACI Model: Those who do the work to achieve a task within ITIL Security Management.

[3] siehe → Role descriptions ...