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Organization carries out threat intelligence by gathering information about information security threats related to its operations and how to protect against them. The goal is to increase awareness of the threat environment, so that own security level can be better evaluated and adequate control measures implemented.
When collecting threat intelligence, all three levels must be taken into account:
Principles related to threat intelligence should include:
The organization has defined a process for addressing identified technical vulnerabilities.
Some vulnerabilities can be fixed directly, but vulnerabilities that have a significant impact should also be documented as security incidents. Once a vulnerability with significant impacts has been identified:
Organization has a process for regulalry conducting threat-led penetration testing (TLPT).
TLPT process fills the following requirements:
The organization monitors information about technical vulnerabilities of the information systems in use. When relevant technical vulnerabilities are detected, the organization takes action according to the planned operating model.
Organization carries out threat intelligence by analyzing and utilizing collected information about relevant cyber security threats related and corresponding protections.
When analyzing and utilizing the collected threat intelligence information, the following points must be taken into account:
The validity and effectiveness of used hardening is maintained throughout the whole life cycle of the data system.
Tietojenkäsittely-ympäristön laitteet tarkastetaan kattavasti ohjelmistohaavoittuvuuksien varalta vähintään puolivuosittain ja merkittävien muutosten yhteydessä. Prosessissa on huomioitu seuraavat seikat:
"Merkittäviin muutoksiin" voidaan laskea esim. verkkotopologian muutokset, uusien järjestelmien käyttöönotot ja/tai vanhojen service pack -tason päivitykset sekä palomuurien ja vastaavien suodatussääntöjen merkittävät muutokset.
Tietojenkäsittely-ympäristön laitteet tarkastetaan kattavasti ohjelmistohaavoittuvuuksien varalta vähintään vuosittain ja merkittävien muutosten yhteydessä. Prosessissa on huomioitu seuraavat seikat:
"Merkittäviin muutoksiin" voidaan laskea esim. verkkotopologian muutokset, uusien järjestelmien käyttöönotot ja/tai vanhojen service pack -tason päivitykset sekä palomuurien ja vastaavien suodatussääntöjen merkittävät muutokset.
The vulnerability management process is regularly tested at intervals specified by the organization to ensure that it is up-to-date, functional, and effective.
Hardening is the practice of reducing system vulnerability by reducing its attack surface.
When configuring virtual machines the organization has to make sure the machines are hardened by, for example, only using ports, protocols and services that are needed. There must also be technical security measures like anti-malware and logging enabled for all virtual machines.
The organization needs to define Monitored Metrics for identifying and correcting vulnerabilities. Meters must be monitored at specified intervals.
The organization must have a clear model for prioritizing identified technical vulnerabilities. The operating model should not be entirely new invention, but should be based on generally accepted practices.
Vulnerabilities should be prioritized based on the risk they pose, the importance of the assets involved, the potential organizational impact, and the urgency (taking into account the CVSS value).
The organization must develop a process to automate the treatment of technical vulnerabilities.
Static scans on code are the first step in detecting risky vulnerabilities. However, once a service has been deployed, it is vulnerable to new types of attacks (e.g., cross-site scripting or authentication issues). These can be identified by penetration testing.
Ohjelmistohaavoittuvuuksien hallitsemiseksi suojaustasoilla III-II toteutetaan seuraavat toimenpiteet:
Merkittäviä muutoksia ovat mm. verkkotopologian muutokset, uusien järjestelmien käyttöönotot, vanhojen järjestelmien merkittävät päivitykset sekä palomuurien ja vastaavien suodatussääntöjen merkittävät muutokset.
Ohjelmistohaavoittuvuuksien hallitsemiseksi suojaustasolla IV toteutetaan seuraavat toimenpiteet:
Merkittäviä muutoksia ovat mm. verkkotopologian muutokset, uusien järjestelmien käyttöönotot, vanhojen järjestelmien merkittävät päivitykset sekä palomuurien ja vastaavien suodatussääntöjen merkittävät muutokset.
Information sources for software and other technologies have been consciously identified to identify and maintain information about technical vulnerabilities that are relevant to us (e.g. authorities or hardware and software manufacturers). Data sources are evaluated and updated as new useful sources are found.
Vulnerabilities can be found directly in the vendor systems we exploit or in the open source components exploited by many of our systems. It’s important to keep track of multiple sources to get the essential information obtained.
We have defined the rules for responding to identified vulnerabilities. The rules may include e.g. the following things:
Vulnerabilities related to high-risk data systems are always of high severity and are addressed first.
The organization regularly conducts a vulnerability scan, which searches for vulnerabilities found on computers, workstations, mobile devices, networks or applications. It is important to scan even after significant changes.
It should be noted that vulnerable source code can be from operating system software, server applications, user applications, as well as from the firmware application as well as from drivers, BIOS and separate management interfaces (e.g. iLo , iDrac). In addition to software errors, vulnerabilities occur from configuration errors and old practices, such as the use of outdated encryption algorithms.
The operation of information systems may depend on certain key resources, such as server capacity, file storage capacity, data processing capacity, monitoring capacity or certain key persons.
In particular, some of these resources may have long delivery times or high costs in certain situations, in which case special attention must be paid to future capacity problems with them.
We monitor the use of key system resources and identify trends, potential security bottlenecks and dependencies on important people.
Unmanaged installations of software on computers can lead to vulnerabilities and security breaches.
The organization should determine what types of software or updates each user can install. The instructions may include e.g. the following guidelines:
Isolate technical environments where the consequences can be very damaging.
Organization's resilience testing programme is prepared for providing all the necessary supporting expert work for the chosen resilience testing operations. This may include e.g. performance testing, end-to-end testing, penetration testing or source code reviews.
Related resilience testing operations can e.g. include vulnerability scans, other scanning software use, network security assements, physical security reviews or other kinds of gap analyses.
The testing organisation used for threat-led penetration testing should meet at least the following requirements:
In the case of using internal testers along with the list above they should be:
In contracts with the tester management of results and any data processing do not create risks to the organisation.
Organization carries out threat-led penetration testing. Each test needs to cover multiple critical or important functions of the related financial entity.
To properly define the proportionate scope for TLPT:
The result of this assessment shall determine the precise scope of TLPT and shall be validated by the competent authorities.
The operation of information systems may depend on certain key resources, such as server capacity,storage space, data processing capacity,monitoring capacity or certain< em>key people.
The organization has defined key resources and methods for monitoring the use of these key resources. A normal level is also determined for the resources, which is used when assessing the risk of jeopardizing availability due to capacity problems.
Organization should share threat intelligence information actively with other organizations to improve its own threat awareness.
Organization must consider the threat intelligence process findings in the information security risk management process. Threat intelligence can detect, for example, the proliferation of certain types of attacks or the development of new technologies, based on which assessments of certain information security risks must be updated, which may lead to the need to reduce risks through treatment plans.
The technical vulnerability management process is regularly monitored and evaluated to ensure its effectiveness and efficiency.
Software updates should have a management process in place to ensure that the latest approved patches and application updates are installed on all approved software. Earlier versions of software should be retained as a precaution.
Once a vulnerability is identified, suppliers often have significant pressure to release patches as soon as possible. Therefore, the patch may not adequately address the issue and may have harmful side effects.
In evaluating patches, e.g. the following things should be taken into account:
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