What is our primary use case?
I have been using Splunk Enterprise Security for the last five years, mainly building use cases for the SOC team. My role involves analyzing logs and writing vulnerability alerts based on what I observe. When security alerts are triggered, the security team receives notifications and takes appropriate action.
For the initial deployment of Splunk Enterprise Security, I cannot say this is easy. It is somewhat complex because when you purchase the product, you have a lot of data. You need to align all of your data so that it fits Splunk Enterprise Security standards. Splunk Enterprise Security has custom data models and custom correlation searches that are already defined. You need to modify or set your data according to Splunk Enterprise Security standards. Once you complete this setup, the product is amazing and will do all of the work.
What is most valuable?
The most valuable aspect of Splunk Enterprise Security is that SIEM compliance is one of the best features. I can say this not only because it is Splunk Enterprise Security specific, but also because it is Splunk specific. All data coming in needs to be placed in the SRC field. All data will be normalized with the SRC field. Whether you are collecting data from a firewall or from numerous products, all data with the same name will be automatically collected by Splunk Enterprise Security alerts. Based on that, you can get all alert triggers and perform any kind of investigations. If something goes wrong, such as someone wrongly accessing servers, you will get everything very quickly based on the authentication data model. The alert part and security investigation part are very good.
Threat intelligence is very helpful because there is a threat intelligence model in Splunk Enterprise Security. It will identify threats from around the world and bring them into Splunk Enterprise Security. AI also helps us. When a wrong IP is detected, an incident will be created in Splunk Enterprise Security. Once you click on the "get more info" button, it will bring all information about where this IP belongs, including location and coordinates. Based on that, you can trigger security incidents and alerts.
I am very familiar with risk-based alerting in Splunk Enterprise Security. Everything in Splunk Enterprise Security is on a risk-based model. When I found an unknown IP detection one time, everything is assigned with a risk score. If I found an unknown IP one time in one hour, the risk score might be five or ten. If the same thing repeats in one hour, for example if an unknown IP tries to log in twenty times in one hour, the score should be higher. Risk-based alerting will check the notables and increase the score. When you have one hit, the risk score will be two. Whenever you have more hits, the risk score increases and the alert severity and alert priority also go high, becoming a P1 or P2 incident for the analyst. Risk-based alerting is a very good feature in Splunk Enterprise Security.
MITRE ATT&CK is helpful for Splunk Enterprise Security. I take reference from this framework whenever I want to create alerts. The first thing I do is check the MITRE ATT&CK framework and read the documentation. In MITRE ATT&CK, there are tables with many rows and columns. I check these tables and review all the alerts. MITRE ATT&CK shows the security framework and the maximum possible things that can be done to secure our platform. From that MITRE ATT&CK reference, I create alerts.
What needs improvement?
The main dislikes about Splunk Enterprise Security are that we need more highly skilled people and the license for Splunk Enterprise Security is costly. Beyond this, the infrastructure cost is too high. Since we have an on-premises deployment, it is costly for us because we need a lot of storage and a big server.
From a maintenance perspective, Splunk Enterprise Security sometimes requires maintenance because it continuously monitors all alerts and continuously creates incidents. Sometimes the data volume is high and some searches will be skipped automatically. We might have 1,000 searches and sometimes experience a lot of skipped searches. Sometimes if we modify any macro, there can also be issues. We need at least one person for maintenance who can continuously ensure that Splunk Enterprise Security is running fine.
Regarding support for Splunk Enterprise Security, we reach out many times. Initially, we purchased hardware that was not capable enough. Sometimes our server became choked and Splunk was not able to run some searches on Splunk Enterprise Security. These issues were due to hardware limitations. We called a consultant from Splunk who analyzed the platform and fixed the issues. Sometimes we upgraded our platform twice by adding additional disk space and RAM.
We have not upgraded to version 8.0 yet for Splunk Enterprise Security and are currently on version 7.0. Recently, we have a demo scheduled from the Splunk team to learn about Splunk Enterprise Security 8.0 features. However, in version 8.0 they changed everything. Initially, we had an incident review dashboard and risk management dashboard that I was very familiar with. In Splunk 10X, all the names changed and everything was restructured. Currently, I am still learning which old features correspond to the new ones. They changed many things, which is also one of the disadvantages, as the changes were extensive.
What do I think about the stability of the solution?
Splunk Enterprise Security has never crashed. However, sometimes there was lagging, but this was due to our infrastructure because we have an on-premises deployment. I used it in the cloud three or four years ago, and the cloud version is very stable with no scalability issues.
What do I think about the scalability of the solution?
Overall, I can give a rating of nine for the scalability of Splunk Enterprise Security.
How are customer service and support?
Splunk Enterprise Security support deserves a rating of nine.
Which solution did I use previously and why did I switch?
I have never used any alternative to Splunk Enterprise Security. Before Splunk Enterprise Security, we were using Splunk for monitoring purposes, writing queries and preparing alerts. However, this is not what Splunk Enterprise Security does. A normal traditional alert can be scheduled based on Cron or similar methods. Splunk Enterprise Security collects threats from around the world and includes a threat intelligence data model. It manages identity and asset information separately, which cannot be done with our traditional approach.
How was the initial setup?
For the initial deployment of Splunk Enterprise Security, I cannot say this is easy. It is somewhat complex because when you purchase the product, you have a lot of data. You need to align all of your data so that it fits Splunk Enterprise Security. Splunk Enterprise Security has custom data models and custom correlation searches that are already defined. You need to modify or set your data according to Splunk Enterprise Security standards. Once you complete this setup, the product is amazing and will do all of the work.
What other advice do I have?
The mean time to resolve in Splunk Enterprise Security will increase. On other platforms, whenever you create alerts, you only need to see what is there and then troubleshoot everything. In Splunk Enterprise Security, when you create an alert, you can add many additional things. For example, once an unknown IP is detected, it will send an email, create an incident, and create a notable inside the security system. It can do many things and you can add more information. You can check a lookup, check an IP, or follow specific steps. You can add multiple steps to follow as well. All of this will be included with the alert, which resolves a lot of mean time. People do not need to go searching to find how to do things. This significantly reduces the time needed and alerts are immediate. Whenever something goes wrong, you will be notified quickly.
With Splunk Enterprise Security, we detect threats frequently. I work with a major client in the Emirates, and we find a lot of attacks happening and many phishing emails. Sometimes we have two firewalls, one is a DC firewall and one is a Palo Alto firewall, with many compliance requirements. People attempt to access these systems and sometimes send vulnerability emails. For all of these things, we are blocking and detecting with Splunk Enterprise Security and immediately notifying the candidate to not open emails or notifying our team via email.
It reduced the analyst's workload in Splunk Enterprise Security. However, after purchasing Splunk Enterprise Security, we hired more people to analyze the data. By purchasing this product, we came to understand that we can implement additional features and security rules. Our team is continuously and actively working, checking the MITRE ATT&CK framework, finding detections, and implementing them on our platform to make it more secure.
MITRE ATT&CK helps detect patterns that have occurred before.
ES Essentials is in our environment for Splunk Enterprise Security, though I have never focused much on working with it and do not know much about what it does.
Overall, I would rate this review as a nine.
Which deployment model are you using for this solution?
On-premises
If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?
Other
Disclosure: My company does not have a business relationship with this vendor other than being a customer.