Splunk Enterprise Security Reviews

Splunk Enterprise Security offers a wide range of capabilities that benefit our organization. This includes user behavior analytics, which helps us identify suspicious activity. Additionally, Splunk Enterprise Security allows us to create custom alerts for various internal security needs.

Splunk has been instrumental in improving our incident response time, especially for user authentication issues. It excels at detecting anomalous behavior, such as brute force attacks or multiple login attempts from a single source. This allows us to quickly identify and address potential security threats, making Splunk a vital tool for our cybersecurity incident response efforts.

The asset and identity management feature strengthens our overall security posture. This system relies on the creation of security roles by administrators. These roles then determine access permissions based on the principle of Role-Based Access Control. In this way, access is carefully controlled and assigned based on specific job duties. It's important to note that administrators retain a high level of access and make final decisions regarding access permissions.

Splunk offers a variety of dashboards, including real-time dashboards that update continuously. These dashboards complement Splunk's real-time alerts by providing a visual overview of our system's health. They can be built to leverage different Splunk resources, like indexes, search clusters, and host clusters. This allows us to monitor key metrics and identify potential issues in real-time, helping us maintain a healthy and efficient system.

Our SoC and Analytics teams use Splunk to monitor multiple cloud environments.

The visibility into multiple environments is good.

The insider threat detection is valuable for our organization because it helps us identify unknown threats. While we leverage existing threat intelligence for known threats through signatures and endpoint protection tools, these methods have limitations. Since they rely on predefined information, they can't be readily integrated with Splunk to monitor for and generate alerts based on these known threats. Splunk's strength lies in its ability to detect anomalies and suspicious user behavior, which can be crucial for uncovering insider threats that might bypass traditional signature-based defenses.

Splunk Enterprise Security excels at analyzing malicious activity. Our team has created several use cases to identify such activity. These use cases focus on data patterns that might indicate malicious intent, such as a sudden increase in login attempts or logins occurring outside of regular business hours. Additionally, we can identify brute force attacks attempting to crack passwords through repeated login attempts. This allows us to effectively monitor for and respond to potential security threats.

It has improved our detection ability and has helped reduce our alert volume to a manageable level.

Splunk has helped speed up our security investigation.

Splunk stands out for its extensive application integrations. It boasts a user-friendly interface with intuitive features that are easy to understand and navigate for technical users. This accessibility is a major reason why I find Splunk so appealing.

The user interface is not user-friendly for non-technical users. 

I have been using Splunk Enterprise Security for three and a half years.

Splunk Enterprise Security is extremely stable.

Splunk Enterprise Security is easily scalable.

We have only had minimal contact with Splunk technical support.

The initial deployment is straightforward.

Splunk Enterprise Security is affordable.

While affordability is important, I recommend Splunk Enterprise Security over the cheapest option on the market. This is because Splunk offers a robust feature set that justifies its cost.

I would rate Splunk Enterprise Security nine out of ten.

We have Splunk Enterprise Security deployed across multiple locations.

Splunk Enterprise Security requires minimal maintenance.

I recommend Splunk Enterprise Security as a scalable and reliable solution for both on-premises and cloud environments. 

We use the solution for detection, basic building searches, and creating many dashboards for investigation purposes. We have also been using it recently to create some RBA detection rules.

The solution's newly developed dashboard is pretty amazing. The full platform is quite useful, and there are a lot of tools that we can use to leverage and modify for our own purposes. Clients don't necessarily know about it, but the tool is powerful because it saves so much time.

The solution has so many features that it's easy to get lost. Many of my clients want to get better at Splunk, but they're afraid of using the tool because they feel it's too complex for them. They also need to go through a certification to use the tool.

I have been using Splunk Enterprise Security for five to six years.

The solution's stability is a lot better on the cloud than on-premises.

The solution’s technical support is good. Sometimes, the technical support team's response time depends on the severity of the alerts. Sometimes, we don't get the right person on the call.

Positive

I use solutions like ArcSight, Exabeam, and Sentinel for different clients.

The solution’s initial setup is easy and not that difficult.

Our clients have seen a return on investment with the solution.

Splunk Enterprise Security is an expensive solution.

It is extremely important to our organization that the solution provides end-to-end visibility into our environment. Usually, a lot of companies don't have full visibility on their endpoints or servers.

Splunk Enterprise Security is a really good tool for helping us find any security event across multi-cloud, on-premises, or hybrid environments, like finding a needle in the haystack.

The solution has improved our organization’s ability to ingest and normalize data. Splunk Enterprise Security has also helped us identify and solve problems in real-time.

When processed correctly, the solution provides us with the relevant context to help guide our investigations.

If everything works correctly, Splunk Enterprise Security helps speed up our security investigations by 50%.

The solution has helped reduce our mean time to resolve by 20%.

When something breaks with the solution, troubleshooting and figuring out the problem is hard. The solution runs better on the cloud, with fewer problems and errors, than on-premises. We may not have the right hardware on-premises.

Splunk Enterprise Security is a great app that has been really innovative in the past. I would recommend the solution to other users. There's a cost to it, like anything that is of quality. However, if you want the best, Splunk is at the top right now. The solution is deployed on AWS and Microsoft Azure clouds.

Overall, I rate Splunk Enterprise Security a nine out of ten.

We use Splunk for monitoring and investigation and recently integrated it with ServiceNow. It's a SOC tool, and any malicious activities on the client's side trigger an alert here. 

Splunk has improved our operations by giving us access to more information and allowing us to deploy more use cases. We have integrated Splunk with ServiceNow, so the information from the queries running on the back end is now directly forwarded to the analysts, reducing the manual work. We are pulling data from Splunk into ServiceNow, so the security analysts have all the user details to conduct their investigations. 

It's easy to monitor multiple environments with Splunk. The cloud model is better than the previous on-premises version. The custom dashboards are helpful. We have created multiple dashboards for user activity, logins, phishing, etc. If you miss an alert, you can check the dashboards. For example, if you need to check some user activity, we have a dashboard for Azure Active Directory, and Mimecast is integrated for monitoring email-based attacks like phishing. It throws the information up on the dashboard when we get an alert.

The monitoring aspect of Splunk could be improved. We have to do some queries to get as much information as CrowdStrike or other solutions provide. If you run a big query, you will see a delay. That is the only concern we have because it will take some time if you query large data sets. 

I have used Splunk for more than three years.

I rate Splunk 10 out of 10 for stability. 

Splunk is a highly scalable product. 

I rate Splunk support 10 out of 10.

Positive

Deploying Splunk is somewhat complex, and it requires maintenance afterward. 

Splunk is expensive based on our current requirements, but it's obviously worth what we pay. 

I rate Splunk Enterprise Security nine out of 10. I see Splunk as a monitoring tool, not as a security tool. It provides alerts, and we conduct an analysis and investigation based on the information we receive. I believe having another sandbox integrated with Splunk will be helpful for the investigator.

We use Splunk daily to find the root cause of attacks and analyze users attempting to access our system. We create incidents and address 5 to 7 simultaneously. Once we analyze and record the activity, we can delete the incident. Our admin team will verify whether it originated externally or internally. 

We use Splunk to respond to security incidents and for data analytics. We conduct custom correlations for the customer and write reports on any attacks. We set alerts for user behavior to discover threats, like if someone is constantly attempting to access our internal domain. The admin will identify that threat and block it. 

Splunk helps us be more proactive. We can take predictive action to identify and block threats so that nothing harmful gets into the system. With Splunk, we can monitor the entire environment from one place. It's a single point of control for all infrastructure, whether in the cloud or on-premise. Splunk has sped up our security investigations. 

I like Splunk's Notable Events. We have created several dashboards for our customers, where you can see the activity and number of alerts. The database receives data about the mask and domain IPs of any user trying to gain access.  We ingest logs from multiple antivirus products and firewalls and analyze them to prevent attacks and threat activities.

Splunk could have more built-in use case presets that customers can build on and customize. 

I have used Splunk for 9 years. 

Splunk is a stable product.

I rate Splunk technical support 8 out of 10. 

Positive

We previously used Dynatrace but switched to Splunk because it has more features. 

Splunk is easy to deploy if you have some basic knowledge. You need experience. It doesn't require any maintenance after deployment. 

Splunk is a good value for the features it provides. The license is costly, but it's better than the other tools. 

I rate Splunk Enterprise Security 8 out of 10. I would recommend Splunk to others. It's one of the most powerful tools available. It's a valuable tool for monitoring infrastructure. 

We use Splunk Enterprise Security for security correlation and event management.

Splunk Enterprise Security is deployed as a hybrid model where the core component is on the cloud and is integrated with an on-premises solution.

Splunk Enterprise Security offers strong visibility through readily available use cases and supports integrations with most standard log sources. Its search capabilities are also commendable. Compared to other tools, Splunk Enterprise Security delivers superior visibility.

While we haven't integrated UEBA yet, it's in our plans. As a proactive monitoring solution, UEBA offers several benefits. It can identify Indicators of Compromise based on historical threat intelligence and generate alerts for suspicious activities. This allows us to potentially detect compromised accounts or ongoing attacks before they cause significant damage.

Splunk offers its threat intelligence service, which helps prevent IP replication and malicious threats. This information can be integrated or configured for our specific use cases, delivering more relevant and high-value insights.

Threat topology and MITRE ATT&CK are frameworks used to understand and analyze attack patterns and techniques, which can then be used to formulate and refine IOCs.

Splunk Enterprise Security's effectiveness in analyzing malicious activities or detecting breaches depends heavily on its configuration and correlation settings. Therefore, it's impossible to definitively label any tool as inherently good or bad. Ultimately, its success hinges on the organization's implementation. This includes onboarding the tool with the appropriate block sources for security detection, employing a sound risk assessment methodology, and aligning the tool's capabilities with both business and security use cases. When configured correctly, Splunk Enterprise Security can undoubtedly contribute to improvements in MTTD and MTDL.

Splunk Enterprise Security helps us detect threats faster. It allows us to define use cases, integrate with multiple threat feeds, and even connect to vulnerability solutions. In essence, by configuring all relevant log sources and defining appropriate use cases, we can achieve the primary objective of any SIEM solution: reducing mean time to protection.

Splunk Enterprise Security has reduced our investigative time by 25 percent by consolidating all logs into a central console. This eliminates the need to log into individual tools for log retrieval.

Splunk Enterprise Security helps reduce the number of false positive alerts.

In terms of monitoring capabilities, Splunk Enterprise Security performs adequately. However, its user interface requires training for efficient use. Compared to competitors like IBM QRadar, McAfee Nitro, and RSA Security Analytics, Splunk has a steeper learning curve, making it feel less user-friendly.

I have been using Splunk Enterprise Security for almost four months.

We use a licensed third-party Splunk partner for support, and I haven't heard of any issues so far.

Compared to IBM QRadar, Splunk Enterprise Security offers faster alert resolution. Its superior indexing and searching capabilities deliver quicker query results. While QRadar boasts a more user-friendly interface, Splunk provides numerous pre-built use cases that effectively reduce false positives and feature comprehensive application dashboards.

For instance, I encountered a use case unavailable in QRadar which appears to utilize the Cyber Kill Chain framework. MITRE ATT&CK enjoys wider adoption, and Splunk leverages this framework whereas QRadar persists with the Cyber Kill Chain. Additionally, Splunk integrates with a third-party app exchange, offering functionalities like vulnerability dashboards, threat intelligence, correlation dashboards, and EPS dashboards. This extensive library of applications caters to diverse business use cases. Users can install these applications as needed, making Splunk a highly customizable and feature-rich solution. Although undeniably expensive, its capabilities justify the cost.

While Splunk is a powerful enterprise tool, I'm new to it myself. I've heard Splunk is often preferred over other options, but the cost can be prohibitive for smaller organizations.

There are cheaper SIEMs available, but they require much more manual configuration, typically by developers with scripting knowledge. Splunk does not require this manual configuration, and its parsing, indexing, and visibility are superior.

Based on the limited time I have been using the solution and the feedback I have received from other users, I would rate Splunk Enterprise Security a six out of ten.

Without a SIEM solution, we rely on individual point solution consoles. For example, logging into a firewall reveals only local logs. Imagine the firewall detects suspicious IPs generating unusual traffic. Confirming this as a true or false positive is difficult solely based on firewall rules. Conversely, a SIEM offers multiple options for correlation. Say the firewall denies traffic, and threat intelligence identifies the source IP as malicious. Additionally, web server logs might show suspicious activity or bad actors attempting an attack. With multiple logs and threat indicators, the chance of false positives drops significantly. Correlation enables confirmation of genuine traffic versus malicious activity. Without a SIEM, pinpointing true attacks from false positives becomes challenging.

I utilize Splunk Enterprise Security to gather logs, and subsequently, I provide the team with access to the servers through a change management ticket or incident. I wasn't involved in the installation process during my tenure as a Windows server lead. I also verify whether all our actions adhere to the compliance framework.

Our deployment of Splunk Enterprise Security was all on-premises.

The visibility that Splunk Enterprise Security provides is beneficial and valuable.

Splunk Enterprise Security helped analyze malicious activities.

With Splunk Enterprise Security we were able to detect threats faster.

Splunk Enterprise Security contributed to a reduction in alert volume as our employees became aware of being monitored and ceased accessing the server without proper authorization.

Splunk Enterprise Security has significantly accelerated our security investigations by centralizing all log data and enabling us to quickly retrieve the necessary information through simple queries.

The most valuable features are the logs, which allow us to identify what happened and who interacted with the web repository.

Some of the queries are difficult to run and have room for improvement.

I am currently using Splunk Enterprise Security. 

I would rate the stability of Splunk Enterprise Security ten out of ten. We have never had an issue with stability.

Splunk Enterprise Security is scalable.

Splunk Enterprise Security's resilience is a valuable asset.

Organizations seeking a more affordable solution should first carefully evaluate their specific business requirements. While cheaper alternatives exist, they may lack the necessary features to adequately address their security needs. In such cases, Splunk Enterprise Security could be a more suitable option.

Splunk Enterprise Security is a worthwhile investment given the comprehensive range of features it offers.

I would rate Splunk Enterprise Security eight out of ten.

I recommend Splunk Enterprise Security.

We use Splunk Enterprise Security to identify and resolve critical issues and errors within our environment.

The visibility that Splunk Enterprise Security provides is good. We can easily find the data we need using the logs.

Monitoring multiple cloud environments using Splunk Enterprise Security was not difficult.

Splunk Enterprise Security's insider threat detection capabilities enable us to effortlessly identify unknown threats and anonymous user behavior.

Splunk Enterprise Security helped us analyze malicious activities and detect breaches between 50 to 90 percent faster.

Splunk Enterprise Security has helped reduce alert volumes by up to 90 percent.

Splunk Enterprise Security has helped speed up our security investigation time by almost 90 percent.

The most valuable feature of Splunk Enterprise Security is the comprehensive logging capabilities it provides.

The price of Splunk Enterprise Security is high and can be improved.

Given the ever-increasing number of threats, I would like Splunk to update its threat signatures more frequently.

I have been using Splunk Enterprise Security for one and a half years.

Splunk Enterprise Security is stable.

Splunk Enterprise Security is scalable.

The resilience of Splunk allows organizations to protect their data and resolve vulnerabilities quickly.

The technical support provides good resolution.

Positive

I had previously used Loggly, developed by SolarWinds and Elastic. However, I found it to be inaccurate and slow. Elastic offers a free version of its solution, which is more commonly used by smaller businesses.

The implementation was completed by a third party.

Splunk Enterprise Security is expensive. I would rate the cost an eight out of ten with ten being the most expensive.

I recommend Splunk Enterprise Security over cheaper SIEM solutions because of its offerings.

I would rate Splunk Enterprise Security nine out of ten.

Splunk Enterprise Security does not require any maintenance. It is plug-and-play.

I recommend Splunk Enterprise Security for organizations that want to detect threats quickly.

We use Splunk for log analytics, blocking dangerous files, etc. It helps to shape our security policies. Splunk is managed by our service provider, but we regularly get security insights from them.

I like the search feature and the indexing. It's very fast and comprehensive. It's easily tuned by your service provider, so I can quickly find the results I'm seeking. So it's very practical. We are working with the search feature and using multiple indexes that combine devices from different environments, so it's easy to collect information across environments. 

We can relatively quickly detect some malicious activities based on attack patterns and implement use cases configured by our service provider with help from Splunk. It improves the speed of threat mitigation because you can gather information about the attack patterns from a few days of online activity to block threats and take the necessary actions. 

We implemented Splunk at the end of 2020, so it's been around three years. 

Splunk Enterprise Security is scalable.

We have not been in direct contact with Splunk except for a workshop where I met a few of them. My impression was that they were skilled, experienced experts. They seemed helpful, so I had a good impression.

The service provider deployed Splunk, so I wasn't involved. I had heard that they experienced some difficulties setting it up, but I don't think it was harder to install than other solutions.

Splunk is very expensive. The license is based on the volume of the logs ingested. I was responsible for managing the contract with our service integrator. I don't know the precise details of the competing solution, but I have heard that Splunk is more expensive than others. I don't know what the going rate is on the market, but I think there are at least two competitors that are less expensive. We have experienced a few issues with our service providers in terms of log filtering and ingestion, so we continue to pay a bit more per day for our logs.

I rate Splunk Enterprise Security eight out of 10. 

We mainly use the Splunk Enterprise Security app to use Splunk as a SIEM. I have worked with Splunk on-premises, which is Splunk Enterprise, and I have worked with Splunk Cloud as well. 

We mostly use Splunk for the SOC environment. We use Splunk for security incident monitoring.

Splunk Enterprise Security fastens our security investigations.

Our organization monitors multiple cloud environments. We have more than 50 customers. Customers have their own licenses, and for some customers, they are shared. We have a single Splunk console. We have customized Splunk, and we have onboarded multiple customers. For some customers, we have integrated Splunk with SOAR. There is a single console to monitor SIEM and other devices. It saves the analysis work. It provides good visibility as compared to the other SIEM products I have worked with. 

We use the Threat Topology and MITRE ATT&CK framework features. You can map your use cases with the MITER ATT&CK framework. It is common in all SIEMs nowadays. It is good. It gives a good mapping of the use case and a better understanding.

Splunk Enterprise Security has not helped reduce our alert volume. It behaves as we configure it. The engineer handles the fine-tuning of the use case and reduction in the alerts.

The fast search is valuable. As compared to other SIEMs, Splunk is very fast in terms of the search and providing data.

The customization of the use cases is another valuable feature. It is query-based, and now, there is a feature to have machine learning as well. We can write advanced-level use cases, which is a limitation of other SIEMs.

The third point is the device integration. It is very smooth. If I need to integrate devices for logs, it is easier with Splunk. We can integrate different applications, network devices, and databases. It is also very rich in documents. It is the best.

Splunk does not provide any default threat intelligence like Microsoft Sentinel, but you can integrate any third-party threat intelligence with Splunk. By default, no threat intelligence suite is there, whereas, with IBM QRadar or Microsoft Sentinel, the default feature of threat intelligence is there. It is free. It would be better if Splunk could provide a default threat intelligence suite.

The second issue is that Splunk is expensive compared to many other SIEM tools in the market. A competitive price will work better.

The third issue is that Splunk Cloud is sometimes slow. If I create more use cases, Splunk will be slow because they provide limited resources in Splunk Cloud. They can do some optimization there.

The last issue is that they used to give a trial version of the Splunk Enterprise Security app that we could showcase to customers for demonstration, but they have stopped that free trial version. If they can start that again, it will be better. It will help to showcase the capability of Splunk.

I have been using Splunk Enterprise Security for seven years.

It is sometimes slow. It also depends on the number of use cases or queries. You need to optimize the use cases or queries that are running and consuming a lot of resources. I have also seen Splunk Cloud hanging a bit. I would rate it a seven out of ten in terms of stability.

We have contacted their support many times. Their support is average. We sometimes have a hard time with their support. They are not very reliable, but this is the case with all SIEM products.

Neutral

We are also using Microsoft Sentinel and IBM QRadar. We have also used ArcSight. For some customers, we are using LogRhythm and the RSA solution. Different customers have different SIEM tools, but I find Microsoft Sentinel and Splunk better than the others in the market. I feel Splunk is the most mature tool at this time. It is very easy to customize. You can do whatever you want.

IBM QRadar is the cheapest option available in the market. It is a traditional SIEM tool. It is not as fast as Splunk or Microsoft Sentinel, but from a costing perspective, it is convenient. There are also a few open-source SIEM tools. Many companies are using those, but if you go with a commercial tool, IBM QRadar is very good in terms of cost value. When it comes to customization and maturity, Splunk Enterprise Security is definitely number one. Microsoft Sentinel comes second, and IBM QRadar comes third.

It is easier than other tools.

We implement it for our clients. The number of people involved depends on the license utilization, the number of devices, and the time frame. Two to three months are normally required for the full integration of a customer environment, and a minimum of two people are required for the integration.

It is expensive. That is why many customers have moved to IBM QRadar. The price is definitely a challenge for customers.

If budget is not an issue, you can go ahead with Splunk Enterprise Security. Nowadays, Splunk is ready to negotiate. With good negotiation, you might get a good deal. If you are a large organization with more than 2,000 devices or more than 500 licenses, Splunk is the best choice. If price is not an issue, you can blindly go with Splunk because it is the most mature tool in the market at this time. Microsoft Sentinel is scaling up, but it is still not there where Splunk Enterprise Security is.

Overall, I would rate Splunk Enterprise Security a nine out of ten.

We use the solution for tracking successful and unsuccessful logins. We track privileged account activities and also a variety of other things, like developing use cases for data exfiltration or integration with ETRs and other security tools for data analysis. 

We wanted to solve the issue of unauthorized access, brute force attacks, and exfiltration. It's helped with MITRE ATT&CK frameworks. 

The organization has been able to quickly triage issues and investigate if something is a true threat or not. Most times, it helps our security posture. The level of confidence we have is high. With Splunk, you can query accounts when you see some strange activity. 

It gives me notifications of notable events. 

The default dashboard is very good. We can see our security posture from there.

On-prem and cloud data analysis are good. You can aggregate it if you need to in order to get good data.

Splunk has proven to be great when tracking down anomalous behavior. The logs are excellent. It is the platform in the industry.  You can integrate anything. The amount of information and usability you get out of Splunk is very good.

We do use the Threat Intelligence Manager. It can be integrated with third parties. The actionable intelligence we get is useful. There is sequencing where you can gauge some actionable steps. 

I use the MITRE ATT&CK framework when I am developing a new use case. It helps us discover the overall scope of an incident. Using Splunk is essential in developing that. 

It's good for analyzing malicious activities and detecting breaches. I'd rate it highly in its capabilities. However, if you don't have the knowledge, it may be difficult. You might get a lot of false positives.

It's helped us detect threats very fast, in almost real time. 

We have reduced our alert volume. I'm not sure of the exact number, however, instead of having 100 to 200 false positives, we might get 20 to 30. 

It has helped us speed up our security investigation, although I don't handle it directly. I simply do triage, and it definitely helps there. 

There are a lot of false positives which can cause a lot of fatigue. 

Sometimes, there is latency in the logs. 

When you deploy Splunk, you need a high level of knowledge. You really need to know what you are doing. It requires a lot of things.

They need to come up with straight steps to get things done, to have a step-by-step process to achieve this or that. 

I've been using the solution since 2020.

The stability is okay.

Splunk would tell you, especially on the different licenses they have, your storage, and your level of ingesting, it can vary. 

Splunk needs to be more clear between storage and performance. 

We worked with a client where almost immediately their storage was already in red. They didn't understand their storage needs as that wasn't clear. 

The solution cuts across countries. I'm not sure how many end-users we have.

The scalability is okay. It scales well even though you have to consider your licensing and storage.

Technical support is good. 

Positive

I have used ELK previously. 

I have been involved in the deployment of Splunk in the past.

The initial setup is not so straightforward for those new to it. I'm accredited and have four years of implementation. You really need that level of knowledge. It's straightforward to make a feed, make it compliant, and do field mapping, however, there are many things you need to do before deployment. 

We had six to eight people deploying Splunk. They were all mostly Splunk professionals, who understood the product and devised a plan and timeline for implementation. We integrated the relevant stakeholders into the process. We were connecting to the Splunk Cloud. 

There is a little bit of maintenance required to maintain the infrastructure. 

We used all in-house resources to implement Splunk.

I have witnessed an ROI while using Splunk. There were some incidents previously in which the company lost millions of dollars. Bringing in Splunk has curbed that. 

The pricing is on the high side. It's not a solution for SMEs.

I'm not sure if any other options were evaluated by the company. 

Currently, we are just Splunk customers. 

We do not monitor various clouds; we only monitor one. However, they have a good solution in that we don't need to worry about maintenance if we do. 

We've never used the Mission Control feature.

If someone is looking for the cheapest SIEM solution, there are a lot of open-source options out there. However, Splunk definitely is an option. If a company is bigger, it would benefit from Splunk. They will be paying some money for it, however, it's worth it.

Resilience is important. To some extent, Splunk addresses this as we haven't had any issues. It's important to have resiliency. If your solution is not resilient, you risk security issues. 

I'd rate the solution eight out of ten. 

I would advise others to spell out what you really need and make it measurable so that you will understand if Splunk is right for you. If you are going to use Splunk, it's important to do your due diligence.