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.
$2.46
per GB ingested
Tenable Nessus
Score 8.8 out of 10
N/A
Tenable headquartered in Columbia offers Nessus, a vulnerability scanning and security assessment solution used to analyze an entity's security posture, vulnerability testing, and provide configuration assessments.
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.
It is an excellent tool for scanning servers, workstations, and network devices to identify missing patches and misconfiguration; we regularly use it to confirm patch effectiveness after the update; it also helps us for preparing audits such as iso 27001, and regulatory requirements, it also helps us to identify open ports and services that violate security.
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.
Nessus is best at performing vulnerability scans, in fact, it gives findings and moreover accurate findings of the assessments. It does not do penetration testing or exploit the vulnerabilities because it is concerned about scanning the systems/applications.
In fact, Nessus has multiple profiles/policies to perform different types of scans such as, scans oriented for PCI-DSS, malware scans, web application scans, bad shell shock detection scan to name a few.
Nessus has the ability to classify the vulnerabilities into risk-based categories from critical to even informational which I think is one of the things that separates Nessus from other vulnerability scanners.
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.
The tool has lots of options for setting up before scanning any device, this methodology could be simplified further with default configuration for various devices predefined, anyhow we can use this technique by making use of policies.
For advanced users we cannot disable the plugins inside the plugin groups, we can enable the whole set of plugins at a time, for few hundreds its ok, but thousands of plugins are of waste of resource and time.
Nessus is best and easy to use application for Vulnerabilities finding and reporting, it has multiple platforms and wide scope covering almost all devices for security improvement so far, thus we are very likely to continue its services.
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.
Tenable Nessus is a great product and provides a lot of value, but it is difficult to set up and use and the amount of data it generates can be overwhelming. It does help us prioritize based on the severity of the detection, however there are sometimes mitigating factors that we have implemented that Nessus does not account for, which causes lots of noise in the reports.
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!
I haven't needed to contact support yet. But issues are easily solved with a quick internet search which means support and by extension, the larger community are involved and knowledgeable.
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.
Sometimes when we identify a vulnerability with Nessus that has an exploit, we made a proof of concept with Metasploit in order to show to the IT managers the importance of the software/hardware hardening.
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.
Nessus certainly has a positive impact while me while performing my job, either as security research, or performing vulnerability assessments for clients. It gives a lot of information about the system/application after performing scans. The number of false positives is also less compared to other vulnerability scanners.
The professional edition is very useful as policy templates available in this edition are very handy and useful even to perform compliance scan like PCI DSS scan.
Also, the ability to export the scan results into reports in formats like HTML, PDF is very useful which could be for performing system/application reviews.
