The basic steps in dealing with network security issues that you need to understand

With the general situation of network security, which is becoming more and more complicated, the security of the system is becoming more urgent than ever, for individuals, businesses and organizations. government agency. In particular, businesses are the preferred target of cybercrime activities due to the nature of the extremely high amount of data and information they are processing and storing.

So far we have talked a lot about how to secure data warehouses, how to build an effective remote defense system, or how to improve and protect infrastructure. security and enterprise-class information network so that it is reasonable, but sometimes forgetting to pay attention to another task is equally important, which is how to handle 'standard' when a network security incident occur, in order to minimize damage as well as create conditions for the investigation and remedy of consequences later.

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Becoming a victim of cyber-attacks has never been a pleasant 'experience' for even large businesses because of the enormous financial losses they have caused, so that remote defenses always be top priority. However, in the event that the incident has already occurred, what to do next to minimize the consequences of leaving is even more urgent.

It is important to remember that the implementation of the incident response steps must be a well-planned process, not an isolated, "improvised" event. In order to have a truly successful incident response process, organizations and businesses should have a coordinated and effective approach between tasks. There are 5 main tasks (steps) in responding to incidents to ensure effectiveness.

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How to minimize the consequences is the mission of the network security incident response process

So what are the 5 basic steps in the process of responding to network security incidents? We will learn together shortly.

The preparation, assess the situation

Preparation is the key to ensuring success for any plan

The key to creating an effective network security incident response process is preparation and assessment of the situation very accurately. Sometimes even the best teams of cyber security experts cannot solve the situation effectively without proper guidance or planning. Just like in football, a club with an all-star team may not be able to achieve success without a good coach, know how to devise tactics, and especially mount a brand. the players on the field. Therefore, it is no exaggeration to say that 'preparing' is the most important step in the entire network security incident response process.

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A number of factors should be included in the preparation plan, assessing the situation after a security incident occurs:

1. Search, develop and synthesize appropriate documents, policies and incident management procedures.
2. Establishing a communication standard so that teams and individuals in the incident response team can coordinate with each other as smoothly and accurately as possible.
3. Combine security threat intelligence feeds, conduct constant analysis and synchronization of feeds.
4. Develop, propose and test many incident response measures to get the most proactive and optimal approach.
5. Assess the organization's current threat detection capabilities and seek assistance from external sources if needed.

Detect and report

Detecting and reporting a potential security threat is the next thing to do after having prepared and assessed the situation.

Second in the series of essential steps in the network security incident response process is the detection and reporting of potential security threats. In this phase, there are some factors as follows:

Monitoring

Firewalls (IPs), IP systems and data loss prevention tools can all help you monitor any security event that has ever occurred in the system. This data is essential for analyzing, evaluating, and forecasting the situation.

Detect

Security threats can be detected by correlating the alerts in the SIEM solution.

Warning

Warnings, notices of security incidents are usually generated by the defense system from the time when the incident is put into effect until the defense system is overcome. This data should be recorded, then aggregated and analyzed to come up with a problem classification plan - an important factor to specify the next steps to take.

Report

All reporting procedures should include prescribed regulatory escalations.

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Analysis

Analysis helps gain the knowledge needed to address threats

Most knowledge of security threats is found through analysis of incident response steps. Evidence is gathered from data provided by defense system tools to help analyze and pinpoint the exact incident.

Security incident analysts should focus on the following three main areas:

Endpoint Analysis

1. Find and collect any traces that could be left behind by malicious agents after the incident.
2. Gather all the ingredients needed to recreate the timeline of events.
3. System analysis from a computer forensic perspective

Binary analysis

Analyze any binary data or malicious tool thought to be used by the attacker, then record all relevant data, especially their functions. This can be done through behavioral analysis or static analysis.

Internal system analysis

1. Check the entire system and event log to determine what has been compromised.
2. Document all accounts, equipment, tools, programs, etc. that have been compromised to provide appropriate remedies.

Prevent

Prevention is one of the most important steps in the security incident response process

Preventing is the fourth step in the process of responding to cyber security incidents, and is also one of the most important factors: Zoning, quarantining and neutralizing threats based on all indicators. collected through the analysis in step three. After recovery, the system will again be able to function normally.

Disconnect the system

Once all affected locations have been identified, they should be disconnected to limit further probable consequences.

Cleaning and restructuring

Once disconnected, all affected devices need to be cleaned up, after which the operating system on the device will be restructured (rebuilt from scratch). In addition, the passwords as well as the authentication information of all accounts affected by the problem should be changed completely.

Threat reduction requirement

If the seized domain name or IP address is identified and proven to be used by malicious agents, you should make threats mitigation requirements to block all future communications between devices. are in the system with these domain names and IP addresses.

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Post-incident reconstruction

Reconstruction is the last thing to do in a security incident response process

There is still a lot of work to be done even after successfully preventing the negative consequences of cyber security incidents. Reconstruction is the final step in a typical network security incident response process, including the following basic requirements:

1. Create a complete incident report, systematizing all the information collected about the problem as well as detailed step by step in the remedial process.
2. Strictly monitor the operation of the affected devices and programs even after they have returned to normal operation after the incident.
3. Regularly update threat information to avoid similar attacks.
4. Last but not least, in steps of responding to incidents: researching and implementing new preventive measures.

An effective cyber security strategy requires businesses to pay attention to every area and aspect that can be exploited by an attacker. At the same time, this will also require the participation of comprehensive tools and solutions to quickly overcome all consequences caused by the incident, avoiding the more negative consequences that may lead to the collapse of the Department. the set.