6 tips for Responding to Security Incidents
Incident response is the structured methodology for handling cybersecurity, threats, and breaches. A well-defined and managed incident response allows you to effectively identify, minimize the damage caused and reduce the cost of a cyber-attack, while finding the issue and preventing the risk of attack. During an incident of cyberattack, the security team will face many unknown and frenzy of attacks. In such type of attack and situation, they may not be able to follow proper incident response procedures that can effectively minimize the damage.
At the time of such a high-pressure situation, the IR team had to focus on the critical tasks. Clear thinking and swift planning for the incident response can help in preventing such threats and hence maintaining your business continuity. You can plan to prevent such threats by having an incident response (IR) plan in one place. In addition, you can also have an IR policy pre-planned and deployed that can help you fully develop your IR plan.
Incident Response Steps to take after a cybersecurity event occurs
The priority should be to have an IR plan in one place before an incident occurs. Your organization should respond to the incident in the following phase:
- Preparation: Planning in advance how to prevent the cyberattacks and how to control the situation if one has occurred.
- Detection and analysis: This analysis comprises of everything from monitoring potential attacks, to looking for sign of an incident.
- Containment and Recovery: Developing a strategy, to identify the threat, mitigate the hosts and systems, and have a plan for recovery.
- Post-Incident Activity: Reviewing the lessons and looking for the evidence retention.
After looking on such phases, we should also look and learn the steps to be taken if any threat activity has occurred or being detected:
1.Assemble your team: It’s critical to have the right people with the right skills in the team, along with the associated tribal knowledge. The best is to have a team leader who takes the responsibility of the team if an incident occurs. This leader should be in direct communication with the management – so that all the important and critical decisions can be taken quickly such as taking key systems offline if necessary. In small organizations where the threat is not that severe, NOC/SOC team should be capable to handle the attack on its own. But for the serious and severe incidents, communication should be done with the relevant areas of the company.
2.Detect and ascertain the source: The IR team should first identify the cause of the breach and then see how it’s contained. The security team will become aware that the incident is occurring, or has occurred from a wide variety of factors that includes:
- Users, system administrators, and other staff that are reporting of the incident.
- Security products generated on the basis of the analysis of log data.
- File integrity checking software, that can help to detect when the important files are being altered.
- Anti-malware programs
3. Contain and Recover: A security incident is analogous to a forest fire. Once you are done with detecting the damage and source, you need to contain the damage. This process may involve stop and disable the computer with the affected networks or vulnerabilities. Not only this, but you may also need to reset the password of the affected users or block accounts of the insiders that might have caused the incident.
The IR team should also backup the current data from the affected system in order to prevent the loss and maintain the continuity of the business for later forensics. Next, move to any service restoration which includes the two critical steps:
- Perform system/network validation and testing to certify all systems.
- Recertify the component that was compromised as both operational and secure.
4.Access the damage and severity: Until and unless the smoke clears its difficult to identify the severity of the incident and the extent of damage caused. For example – was it caused by the external server that could result in the shutdown of critical business components such as e-commerce, reservation systems, etc. Or did a web application intrusion had an SQL injection attack to execute malicious SQL statements on the SQL database. If critical systems are involved, escalate the incident and activate your response team immediately.
In other words, look at the cause of the incident. Whether the attack was caused from inside or outside, consider the event more seriously hence react and plan accordingly. At the right time, review the pros and cons of the cyber attribute investigation.
5.Begin the notification process: A data breach is a security incident in which the sensitive, protected or confidential data is being transferred, viewed or stolen by an unauthorized individual. Privacy laws such as GDPR require public notification in the event of such a data breach. Notify affected parties so that they can protect the data from identity theft.
6.Start now to prevent the same type of incident in the future: Once the security incident has been stabilized, examine the lessons and learn how to prevent the same type of incident in the future. This might include server vulnerabilities, training employees and how to provide the scams to better monitor insider threats. Also, don’t forget to implement these lessons in your policy learned from the vulnerabilities that occurred.
Lastly, update your security incident response to reflect all these preventative measures. Every organization will have different policy for the incident response based on their environment and business needs. To know more and protect your organization’s environment from the threat with a proper guide you contact TechNEXA Technologies.