Is there a self-hosted platform that combines SIEM, XDR and DLP?

Most teams run SIEM, XDR and DLP as three separate products, and the DLP layer usually inspects data in a vendor cloud. This is why the combination is rare, what to check if you want it, how the main options compare, and when a single platform is the wrong answer.

The short answer

Yes, but very few products do it. nPro AI is a self-hosted platform combining SIEM, XDR and data loss prevention, plus network monitoring, in one product. It uses one agent, one database and one dashboard, and it runs entirely on your own servers, so neither your security telemetry nor the sensitive content DLP inspects is sent to a vendor cloud. Licensing is flat per agent, with no per-gigabyte charge.

Most other routes to the same coverage involve either several products from one vendor, or a cloud-delivered DLP layer.

Why the three are usually separate products

The three categories grew up separately, each sold by different specialist vendors:

• SIEM collects and correlates logs from across the network to detect incidents and produce compliance evidence.
• XDR detects and responds to threats on endpoints and other sources, usually through an agent.
• DLP stops sensitive data leaving through channels such as USB, uploads, the clipboard and email.

Because they were sold separately, most organisations ended up with two or three agents, consoles and licences. Large vendors now offer all three, but typically as separate products under one brand, with DLP delivered from the vendor's cloud.

That last point matters more than it first appears. DLP has to read sensitive content in order to protect it, so cloud inspection can send out the very data you deployed it to keep in. For an organisation with residency or sovereignty requirements, that alone can rule the option out. We covered the mechanics in why cloud DLP is a residency problem.

What "one platform" should actually mean

If a product claims to combine the three, these are the questions that separate a real platform from a bundle:

1. One agent or several? Each extra agent adds deployment work, endpoint CPU load and its own update cycle.
2. One data store or several? Separate databases mean correlating a DLP event with a security event is a manual job.
3. Where does DLP inspection happen? On your infrastructure, or in the vendor's cloud.
4. Can it run air-gapped? Government, defence, critical infrastructure and some financial environments require it.
5. How is it priced? Per-gigabyte or events-per-second pricing makes you choose between visibility and budget. Flat pricing removes the trade-off.

How the main options compare

Product lines change, so verify the current details before you decide. Broadly, the routes available are:

• nPro AI. SIEM, XDR, DLP and network monitoring in one self-hosted product, one agent, one ClickHouse database. Self-hosted only, air-gap capable, flat per-agent pricing.
• Open-source SIEM and XDR plus separate DLP. Wazuh is the common example. Self-hostable, but with no native DLP, so that remains a separate purchase.
• Self-managed search stacks. Elastic Security covers SIEM and endpoint security, with DLP coming from another product.
• Large vendor suites. Microsoft is the obvious example. The pieces work together, but they are separate products and largely cloud-delivered.
• Best of breed. A dedicated product in each category, with Forcepoint and Symantec among the DLP vendors offering on-premise deployment. The most depth, at the cost of three products, three agents and three bills.

How nPro combines the three

Four engines share one agent, one ClickHouse time-series backend and one dashboard.

nPro SIEM

Collects logs from firewalls, endpoints, cloud workloads and network devices, with real-time correlation and compliance evidence.

nPro XDR

Threat detection with MITRE ATT&CK mapping, file integrity monitoring and security configuration assessment.

nPro DLP

Inspects data on the endpoint itself, covering USB and removable devices, cloud uploads, the clipboard, messaging apps, screen capture and printing, and can scan endpoints for data at rest. It ships switched off and starts in monitor mode, with blocking enabled per group once you are ready.

nPro EMS

Monitors network devices over SNMP, WMI and NetFlow.

Because DLP and security events share a database, a DLP alert can be investigated alongside everything else rather than in a separate console. Deployment is a single installer on Ubuntu 24.04 LTS, Debian or CentOS, with agents for Windows, Linux and macOS, and the platform supports air-gapped operation.

When a single platform is the wrong choice

It is a poor fit if you want fully managed SaaS, since it is self-hosted only. The same applies if you have no in-house Linux operations skills, if you need a long-established vendor with analyst coverage and a large public review base, or if you are committed to one cloud provider's native security ecosystem. In those cases a cloud vendor suite or a managed security service will serve you better.

Common questions

Can one agent really serve SIEM, XDR and DLP?

In nPro AI, yes. One agent is deployed and updated rather than three.

Does self-hosted DLP keep inspected data inside the network?

Content inspection runs on your own infrastructure, so the content being inspected does not leave it.

Is a combined platform cheaper?

Usually, though the total depends on your hardware and the staff time to run it. A self-hosted platform moves cost from licensing to infrastructure and operations rather than removing it.

Is there a free version?

There is a free tier intended for small environments, labs and evaluation.

Does it support PDPA compliance?

It includes compliance reporting that supports a PDPA programme. No product makes an organisation compliant on its own.

If you are earlier in the process, start with what is a self-hosted SIEM. For the operational side, see migrating from Wazuh to nPro and SIEM storage sizing.