Graylog, headquartered in Houston, offers their eponymous platform for centralized log management that helps users find meaning in data faster so as to take action immediately. Graylog is available via Enterprise and Cloud plans, but also has a Small Business Plan, and an Open (free) plan with limited features.
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Microsoft Sentinel
Score 8.6 out of 10
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Microsoft Sentinel (formerly Azure Sentinel) is designed as a birds-eye view across the enterprise. It is presented as a security information and event management (SIEM) solution for proactive threat detection, investigation, and response.
For small companies, Graylog is the best solution possible. It's easy to configure and "just works." Above everything else, it's free. The only thing I hold against it is the fact that it's Linux-based. [This] makes sense because Elasticsearch is Linux-based. But Linux adds a layer of complexity that we don't need for something basic as a logging server. I'm pretty sure that we would have had a logging server years earlier if I had to convince quite a few decision-making people to go ahead with it anyway.
It's certainly well-suited in environments that rely heavily on Microsoft products, and it's well-suited for environments where you have other business drivers to go to the E5 license. If I were to say where I would not and why, I only gave it a seven on the recommendation, that answer would probably vary if you already owned E5 or not. It's extremely expensive. And if there are other alternatives, if you don't have any other driving reason to go to E5, I would coach you not to go to Microsoft Sentinel. But if you're there, it's a fantastic property. It's certainly part of the cost argument for moving to E5, but it's only a part. It can't by itself justify the move to E5.
Graylog does a great job of its core function: log aggregation, retention, and searching.
Graylog has a very flexible configuration. The backend for storage is Elasticsearch and MongoDB is used to store the configuration. You have to option to make your configuration as simple as possible by storing everything on one box, or you can scale everything out horizontally by using a cluster of Elasticsearch nodes and MongoDB servers with several Graylog servers pointed to all the necessary nodes.
Graylog does a good job of abstracting away a fair portion of Elasticsearch index management (sharding, creation, deletion, rotation, etc).
It's the scale. Having built-in detections and vulnerabilities and the ability to see into the traffic flows is absolutely key. Look at it from my perspective as network security. We want to see what's going on east, west, between all the kinds of subscriptions and the tenants. We don't have that. We don't have that with any other product. Microsoft Sentinel gives us that kind of visibility.
An area for improvement is how case management is surfaced within the Microsoft Sentinel experience, as clearer integration into Sentinel workflows would reduce context switching and improve incident handling.
There is an opportunity to further expand agentic, autonomous investigation and response capabilities.
Graylog is easy to deploy. The tricky part is to configure all hosts that are going to send their log data to Graylog, considering the retention period of this data, it will need a lot of disk space to store it. Its rotation works fine. It is very simple to navigate and explore the data you send to it, and very easy to filter and export them too.
Because, as I said, it still lacks a lot of things, like many playbooks outside the Copilot integrations and the actual remediation. For example, for Microsoft Sentinel and SAP, I would want to see Copilot doing a lot of remediations in Microsoft Sentinel at SAPN, like executing the transaction code, maybe creating certain increases, or remediating stuff like that, which is all customized.
Community support does not give simple straightforward answers; simply search up Graylog Issues and look at some of the responses on the forums. The documentation is your only hope if you are on the free version, as you can NOT purchase only support. The few times I have worked with Graylog Enterprise support they were great though.
Microsoft support is one of the highest rated on the market. It has global and multilingual support. Calls can be made over the phone and the solution is virtually instantaneous with the help of Microsoft engineers. It's great!
In terms of log aggregation, the free product fully stacks up with the competitors listed. Full control over the data ingests for flexible configuration. Graylog even better on that front than AlienVault USM because you cannot configure the variable mapping. We haven't used the threat exchange stuff or correlation. But with regex searches, we have created function dashboards that show threat theater pictures of our network based on logs from our firewall.
Microsoft Sentinel excels in cloud-native scalability, Microsoft ecosystem integration, and AI-driven threat detection with UEBA and Fusion rules, offering faster deployment and lower costs (48% cheaper per Forrester) than Splunk, QRadar, Exabeam, SentinelOne, Securonix, and Wazuh. It lags in third-party integrations and syslog parsing. Organizations choose Microsoft Sentinel for its cost-effectiveness, automation, and Microsoft synergy, especially in Azure-heavy environments, though Splunk and Exabeam lead in flexibility and UEBA, respectively.
As any cybersecurity product, this has to be more with risk to avoid loss in case of a ransomware that more than relate to a productivity increase. Maybe the impact could be that instead of having people that are checking 24/7 the dashboard, you could implement Sentinel and have less people checking that or people with less expertise. So the saving will be a minor but will be a saving in the cost of your team.
