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ArcSight Enterprise Security Manager (ESM) vs IBM Security QRadar vs Splunk Enterprise Security comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
8.9
ArcSight ESM can offer high ROI through threat detection, compliance, audits, and brand protection despite its costs and implementation challenges.
Sentiment score
7.5
IBM Security QRadar is cost-effective, enhancing security while reducing manpower, with positive feedback on financial returns.
Sentiment score
7.2
Splunk Enterprise Security enhances visibility, integration, and efficiency, streamlining operations and reducing costs, providing substantial returns for organizations.
With SOAR, the workflow takes one minute or less to complete the analysis.
Investing this amount was very much worth it for my organization.
I have noticed a return on investment with Splunk Enterprise Security, as it delivers substantial value for money.
Customers see the value in investing in this solution, particularly when it helps resolve issues quickly, turning a potential 20-hour response into one hour.
We are able to secure the environment from all security threats and maintain an environment that is free from threats and attacks, especially cyberattacks.
 

Customer Service

Sentiment score
5.7
ArcSight ESM customer service is mixed, with efficient initial responses but inconsistent, often slow technical support causing dissatisfaction.
Sentiment score
6.1
IBM Security QRadar support is praised for expertise but criticized for slow response times and inconsistent service quality.
Sentiment score
6.7
Splunk Enterprise Security support is knowledgeable, but response times vary; experienced engineers and licensed users report better outcomes.
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
They assist with advanced issues, such as hardware or other problems, that are not part of standard operations.
Support needs to understand the issue first, then escalate it to the engineering team.
The problem escalates through level one to level three, and then the process starts over with Novo again.
If you want to write your own correlation rules, it is very difficult to do, and you need Splunk's support to write new correlation rules for the SIEM tool.
They try to close issues as soon as possible, often just offering documentation links.
They are responsive and effectively resolve issues.
 

Scalability Issues

Sentiment score
7.1
ArcSight ESM offers scalability and cloud support but faces high costs and EPS licensing challenges for growing event volumes.
Sentiment score
7.4
IBM Security QRadar is highly regarded for its scalability, with easy vertical and horizontal expansion and seamless cloud deployment.
Sentiment score
7.7
Splunk Enterprise Security excels in scalability and flexibility for data, despite potential cost increases with larger usage.
It lacks some capabilities compared to other tools available in the market.
For EPS license, if you increase or exceed the EPS license, you cannot receive events.
They struggle a bit with pure virtual environments, but in terms of how much they can handle, it is pretty good.
It is easy to scale.
It's big in a Central European context, and small from a Splunk North American context.
 

Stability Issues

Sentiment score
7.1
ArcSight ESM is stable with configuration efforts, though deployment challenges and occasional issues arise under high-load conditions.
Sentiment score
7.6
IBM Security QRadar is reliable but stability depends on correct deployment, capacity, and system resources, with minor update issues.
Sentiment score
7.9
Splunk Enterprise Security is praised for its stability and resilience, though occasional issues occur with complex queries or updates.
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
I think QRadar is stable and currently satisfies my needs.
The product has been stable so far.
They test it very thoroughly before release, and our customers have Splunk running for months without issues.
It provides a stable environment but needs to integrate with ITSM platforms to achieve better visibility.
It is very stable.
 

Room For Improvement

ArcSight ESM needs interface updates, better integration, improved performance, reporting, scaling, error handling, and enhanced technical support.
IBM Security QRadar needs UI improvement, better integration, enhanced detection, streamlined operations, and customization for cost-effective functionality.
Enhancements in UI, integration, support, and advanced features could improve Splunk Enterprise Security's usability, efficiency, and cost-effectiveness.
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
We receive logs from different types of devices and need a way to correlate them effectively.
If AI-related support can suggest rules and integrate with existing security devices like MD, IPS, this SIM can create more relevant rules.
IBM Security QRadar does not support Canvas, so we had to create custom scripts and workarounds to pull logs from Canvas.
Improving the infrastructure behind Splunk Enterprise Security is vital—enhanced cores, CPUs, and memory should be prioritized to support better processing power.
Splunk Enterprise Security is not something that automatically picks things; you have to set up use cases, update data models, and link the right use cases to the right data models for those detections to happen.
For any future enhancements or features, such as MLTK and SOAR platform integration, we need more visibility, training, and certification for the skilled professionals who are working.
 

Setup Cost

ArcSight ESM is costly but justifiable, with pricing based on EPS, scalable features, and possible bulk discounts.
IBM Security QRadar is costly but efficient, offering flexible pricing, EPS discounts, and potential cost savings with negotiation.
Splunk Enterprise Security, despite high costs, is favored by large enterprises for its comprehensive features and robust capabilities.
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
Splunk is more expensive than IBM Security QRadar.
I saw clients spend two million dollars a year just feeding data into the Splunk solution.
The platform requires significant financial investment and resources, making it expensive despite its comprehensive features.
Splunk is priced higher than other solutions.
 

Valuable Features

ArcSight ESM offers seamless integration, scalability, customizable features, real-time monitoring, and extensive analytics for effective threat detection and response.
IBM Security QRadar excels in log management, scalability, compliance, and integration, enhancing comprehensive security management with ease.
Splunk Enterprise Security enhances threat detection and incident response with advanced data analysis and integration from diverse sources.
The ability to interpret data is highly valued.
Recently, I faced an incident, a cyber incident, and it was detected in real time.
IBM is seeking information about IBM QRadar because a part of QRadar, especially in the cloud, has been sold to Palo Alto.
We have FortiSOAR and IBM Resilient for IBM Security QRadar orchestration.
This capability is useful for performance monitoring and issue identification.
I assess Splunk Enterprise Security's insider threat detection capabilities for helping to find unknown threats and anomalous user behavior as great.
Splunk Enterprise Security provides the foundation for unified threat detection, investigation, and response, enabling fast identification of critical issues.
 

Mindshare comparison

As of June 2025, in the Security Information and Event Management (SIEM) category, the mindshare of ArcSight Enterprise Security Manager (ESM) is 1.1%, down from 1.5% compared to the previous year. The mindshare of IBM Security QRadar is 8.2%, down from 9.7% compared to the previous year. The mindshare of Splunk Enterprise Security is 9.5%, down from 12.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM)
 

Featured Reviews

Gaurav Ranade - PeerSpot reviewer
Excels at performing regression and correlation on the data
ArcSight is a legacy technology, and many customers want AI-powered technologies integrated with it. That hasn't been done yet, but ArcSight needs to catch up with the newer solutions and technologies available in the market. It can't just rely on the legacy technology from 2010 or 2012. You can't run that in 2024. It's a legacy technology with its own limitations. Customers often face issues that other software or newer solutions can resolve easily. That's the main challenge we face from customers right now. So, the only concerns are that AI needs to be integrated and scalability improved. Those are the main areas to be improved.
Md. Shahriar Hussain - PeerSpot reviewer
Real-time incident detection and user-friendly dashboard benefit daily operations
There are many types of AI, and this AI is very limited in SQL and features. There may be potential for improvement. So far, it seems very limited. It shows some good features in the correlation part, but I think there is room for improvement. For instance, when creating rules, it can suggest more rules, reducing the effort needed. If AI-related support can suggest rules and integrate with existing security devices like MD, IPS, this SIM can create more relevant rules. Sometimes logs I receive don't mean anything, and I need technical stakeholders to share or forward logs, but these are sometimes inadequate. Keywords can help identify insufficient logs. I often lack time to verify logs. Sharing false positive results could be reduced to help my team.
ROBERT-CHRISTIAN - PeerSpot reviewer
Has many predefined correlation rules and is brilliant for investigation and log analysis
It is very complicated to write your own correlation rules without the help of Splunk support. What Splunk could do better is to create an API to the standard SIEM tools, such as Microsoft Sentinel. The idea would be to make it less painful. In ELK Stack, Kibana is the query language with which you can search log files. I believe Splunk has also a query language in which they search their log files, but once you have identified the log file that you want to use for further security correlation, you want to very quickly transport that into your SIEM tool, such as Microsoft Sentinel. That is something that Splunk could make a little bit less painful because it is a lot of effort to find that log file and forward it. An API with Microsoft Sentinel or a similar SIEM tool would be a good idea.
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Comparison Review

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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
Financial Services Firm
20%
Computer Software Company
15%
Manufacturing Company
8%
Government
7%
Computer Software Company
16%
Financial Services Firm
11%
Educational Organization
10%
Government
7%
Financial Services Firm
15%
Computer Software Company
15%
Manufacturing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the best SIEM tool for a mid-sized financial services firm: Arcsight or Securonix?
In my market, a lot of financial companies had or have an ArcSight installation. Just because in former times it was ...
What do you like most about ArcSight Enterprise Security Manager (ESM)?
We utilize ArcSight ESM for real-time threat detection in our organization. We have custom rules that we've developed...
What is your experience regarding pricing and costs for ArcSight Enterprise Security Manager (ESM)?
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools. It is worth the investment if you a...
What are the biggest differences between Securonix UEBA, Exabeam, and IBM QRadar?
It mostly depends on your use-cases and environment. Exabeam and Securonix have a stronger UEBA feature set, friendli...
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 a...
What is your experience regarding pricing and costs for IBM Security QRadar?
When comparing with Splunk, IBM Security QRadar's cost is reasonable. Splunk is more expensive than IBM Security QRadar.
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 ingest...
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 monitor...
What do you like most about Splunk?
There are a lot of third-party applications that can be installed.
 

Also Known As

Micro Focus ArcSight, HPE ArcSight, ArcSight
IBM QRadar, QRadar SIEM, QRadar UBA, QRadar on Cloud, IBM QRadar Advisor with Watson
No data available
 

Overview

 

Sample Customers

Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Clients across multiple industries, such as energy, financial, retail, healthcare, government, communications, and education use QRadar.
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, Wazuh, Microsoft and others in Security Information and Event Management (SIEM). Updated: June 2025.
856,873 professionals have used our research since 2012.