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Splunk Enterprise Security vs i-SIEM [EOL] comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

i-SIEM [EOL]
Average Rating
9.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Splunk Enterprise Security
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
468
Ranking in other categories
Log Management (1st), Security Information and Event Management (SIEM) (1st), IT Operations Analytics (1st)
 

Featured Reviews

Dannie Combs - PeerSpot reviewer
Senior Vice President and Chief Information Security Officer at Donnelley Financial Solutions
The alert fatigue and false positive rates have just plummeted, which is really exciting.
empow has a few areas of improvement as with any other technology, such as continuing to drive innovation in the dashboard. While we've been extremely impressed with the dashboard's ease of use, flexibility, ability to drill down deeply, and focus very intently on an area of interest, there will always be opportunities to be more innovative and open it up to a wider audience than just the operations group, for example. With reporting, there is always a desire to have custom reporting for every client of empow. Relative to keeping up with the sheer pace of cloud-native technologies, it should provide more options for clients to deploy their technologies in unique ways. This is an area that I recommend that they maintain focus.
Sathis-Kumar - PeerSpot reviewer
Senior Manager at Bank of America
Helps us detect cyber threats quickly and integrate multiple feeds effectively
Overall, the product is good, but when it comes to some infrastructure issues, we have to dig into more logs. There is no straightforward indication of an issue. Health check kind of dashboards are not available. More AI would help us, and more optimization, since security products run more queries. The AI module could suggest solutions, optimizing queries or workload balancing. If the product itself advises on running queries during peak times, it would be similar to what ChatGPT currently offers. We see quite a few issues on stability. Even last week, we faced something, and identifying bottlenecks is not easy. We need more SMEs, and there is no mechanism to tell us about indexer or search head issues. Self-monitoring dashboards could be beneficial. The technical support still requires more improvement. Often, primary support takes a lot of time and forwards most solutions to the engineering side. The primary support team has very limited knowledge to provide.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"As a result of the automation, we are able to manage SIEM with a small security team. I'm in a unique position where we have been growing the security organization quite rapidly over the last three and a half years. But, as a direct result of the empow transition and legacy collection of tools towards the empow platform, we've been able to keep that head count flat. We've been able to redirect a lot of the security team's time away from the wash, rinse, repeat activities of responding to alarms where we have a high degree of confidence that they will be false positives, adjusting the rules accordingly. This can be a bit frustrating for the analyst when they have to spend hours a day dealing with these types of probable false positives. So, it has helped not only us keep our headcount flat relative to the resources necessary to provide the assurances that our executives expect of us for monitoring, but allows our analyst team to spend the majority of their time doing what they love. They are spending their time meaningfully with a higher degree of confidence and enjoying getting into the incident response type activity."
"From a monitoring and incident response perspective, empow is the most valuable asset we have in our toolkit."
"The solution's most valuable feature is the criticality of alerts."
"Based on my experience and what I have heard, the customer support for Splunk Enterprise Security is excellent."
"Search language is easy to understand and teach to new users."
"The benefits include the easy integration with other Splunk tools including Splunk UEBA, Splunk ITSI, and Splunk Core. The ease of integration and the organization's experience and familiarity with searching and passing logs through Splunk are the main benefits."
"Splunk Enterprise Security has been the best SIEM solution tool I have worked with over the past ten to fifteen years."
"Splunk Enterprise Security has positively impacted my organization by allowing us to alert and use its threat intel and asset modeling capabilities to accurately see what is happening, when it's happening, and who it's happening to."
"The risk-based alerting is excellent."
"Splunk UBA is useful for fraud detection and for detection of APTs, advanced persistent threats."
 

Cons

"Relative to keeping up with the sheer pace of cloud-native technologies, it should provide more options for clients to deploy their technologies in unique ways. This is an area that I recommend that they maintain focus."
"Pricing is certainly an area that could use improvement. While some vendors may offer lower prices, the value we receive here truly sets this solution apart."
"​Not even Splunk's support guy, who came to our firm, could help with defining proper role management.​"
"In terms of the interface, it could include some improvements for the look and feel."
"I would say we haven't seen any return on investment with Splunk Enterprise Security because we are still maturing and trying to get everything situated, and we're experiencing roadblocks with other teams not wanting to give us what we need."
"The configuration had a bit of a learning curve."
"The GUI, now called Mission Control, which serves as issue management or ticket management, falls below what would be considered industry standards."
"Splunk's ability to analyze malicious activities scores an 8 out of 10, but there's room for improvement. By analyzing emerging patterns, Splunk could identify and predict potential threats more effectively."
"Its reporting can be improved. That's the only complaint I have heard. I don't need the reporting part, but I know that other people in the organization need it."
 

Pricing and Cost Advice

"I don't have to put up with any longer with these hypercomplex licensing agreements. Every time I want to add some additional reporting as a compliance centric or regulatory specific, e.g., GDPR, PCI, or Sarbanes-Oxley, many providers would have an additional license for this, which felt a bit ridiculous to me. With the simplified licensing architecture, there were no hidden "gotchas" down the road with empow. Something I have experienced with other providers that I've worked with in the past."
"With a higher degree of fidelity in the alarms, we were able to avoid adding additional resources to our teams. We take into account the cost of security resources in the market and the significantly higher fidelity from the alarms that are being generated. This drove down our costs with our MSSP. It drove down my cost for human capital internally. It drove down our need to have multiple resources supporting the underlying infrastructure and health and maintenance of empow as a platform from several resources down to one. Therefore, human capital costs were significantly reduced. Our operating expenses were significantly reduced. Our capital costs were significantly reduced while tripling our capacity and our run rate reduced. It was almost a "too good to be true" situation. Fortunately, for us, it worked out very nicely."
"Splunk is a bit pricier, but the benefits and ROI are huge."
"The tool's licensing is good and we haven't received any complaints from the team handling it."
"It is expensive. I work for multiple clients. I am working for more than five clients, but most of the clients are switching from Splunk to Sentinel because of the cost. Even though Sentinel is very limited, clients are moving to Sentinel."
"Regarding the product's pricing, I think it has always been difficult to have a conversation with Splunk."
"I've heard Splunk is often preferred over other options, but the cost can be prohibitive for smaller organizations."
"While some clients find the cost of Splunk Enterprise Security to be on the higher end, its pricing is comparable to other SIEM solutions."
"Price-wise, if you compare QRadar to Splunk for SIEM functionality then they are in the same range but when you integrate SOAR with these solutions, Splunk takes the lead and is more competitive."
"As a team, we prefer the old pricing model with a perpetual license. We are still evaluating the whole subscription-based model."
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Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Outsourcing Company
16%
Construction Company
13%
Comms Service Provider
10%
Performing Arts
10%
Outsourcing Company
12%
Financial Services Firm
12%
Manufacturing Company
9%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business135
Midsize Enterprise74
Large Enterprise320
 

Questions from the Community

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What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is asking to miss details that are critical, and ending up a statistic. Also, rememb...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingestion of anything, but the charge per GB/Day Indexed and it gets expensive as log ...
How does Splunk compare with Azure Monitor?
Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitoring information from different sources. Splunk is very good at alerting us if we...
 

Overview

 

Sample Customers

University of Oklahoma, Donnelley
Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.
Find out what your peers are saying about Splunk, IBM, Microsoft and others in Security Information and Event Management (SIEM). Updated: October 2026.
919,088 professionals have used our research since 2012.