Your EDR platform flags a suspicious process at 2am on a Saturday. Nobody is looking at it until Monday morning. That gap, not a missing product, is the problem Managed Detection and Response actually solves. Here's what it is, what it includes, and how to tell if your Perth business needs it.
EDR vs MDR: Two Different Things
As covered in our guide to EDR vs antivirus, Endpoint Detection and Response is software that watches behaviour on your devices and flags anything that looks like an attack. It's a genuine step up from traditional antivirus. But EDR on its own still needs a person to look at what it finds. An EDR platform that generates alerts nobody reviews is a smoke detector with the battery removed. MDR is the service layer that closes that gap, a security team that actually watches the alerts, investigates the real ones, and acts.
What MDR Actually Includes
- 24/7 monitoring. A security operations team watching endpoint, network, and identity alerts around the clock, not just during business hours.
- Threat hunting. Analysts proactively searching for signs of compromise across your environment, rather than waiting for an alert to fire.
- Triage and investigation. Distinguishing a genuine threat from the background noise every EDR platform generates, so real incidents don't get lost in false positives.
- Active response. Isolating a compromised device, killing a malicious process, or disabling a compromised account, often within minutes of detection, not after someone gets back to their desk.
- Reporting. Regular summaries of what was detected, what was actioned, and the overall security posture trend, useful for both internal visibility and insurance renewals.
Do You Actually Need It?
A few practical signals point toward yes:
- You'd be materially worse off if a breach went unnoticed over a weekend or public holiday, rather than caught within the hour.
- A cyber insurer, client, or tender process has specifically asked whether you have 24/7 monitoring in place, not just EDR.
- Your current IT provider reviews alerts as time permits during business hours, rather than as a dedicated, always-on function.
- You handle data, financial, health, legal, or client records, where a slow response genuinely compounds the damage.
If none of those apply, EDR with business-hours review from your IT provider may be a reasonable fit for now. MDR is worth the conversation once any of them do.
MDR vs Building Your Own Security Operations Centre
Running a genuine 24/7 in-house security operations function isn't realistic for most Perth SMBs, it requires shift coverage, specialist analysts, and tooling that costs far more than the incidents it's protecting against for a business under a few hundred staff. MDR delivers the same outcome by spreading that cost across many clients, which is why it's typically the only practical way a small or mid-sized business gets real around-the-clock coverage.
Questions to Ask Before You Buy MDR
- Is it actually 24/7, or business-hours-with-alerts-queued overnight? Ask specifically what happens to an alert that fires at 3am on a Sunday.
- What are the response time commitments? Get a specific figure for how quickly a confirmed threat gets contained, not just acknowledged.
- What's included versus what's an upsell? Some providers price threat hunting, reporting, or incident response separately, worth knowing upfront.
- Whose EDR platform does it run on? Confirm it's a platform your provider actually knows well, not a bolt-on service layered over unfamiliar tooling.
How MDR Ties Into Cyber Insurance and the Essential Eight
As we've covered in our cyber insurance guide, insurers increasingly ask specifically about detection and response capability, not just whether antivirus is installed. The Essential Eight doesn't mandate MDR by name, but its detection-focused strategies are far easier to demonstrate genuine maturity against when something is actually watching around the clock, rather than relying on alerts being checked whenever someone gets to them.
Frequently Asked Questions
Is MDR the same thing as EDR?
No. EDR (Endpoint Detection and Response) is the software that monitors devices and generates alerts. MDR (Managed Detection and Response) is the human-monitored service built on top of it, an actual security team watching those alerts, investigating them, and responding around the clock. You need EDR to have MDR, but having EDR alone doesn't mean anyone is watching it outside business hours.
Do small Perth businesses really need 24/7 monitoring?
It depends on your risk profile and what you're being asked for by insurers or clients. Attackers deliberately favour weekends and public holidays because they know IT teams are smaller or unavailable. If your business would be badly hurt by a breach that goes unnoticed for a full weekend, that's the gap MDR closes.
What's the difference between MDR and what our current IT provider already does?
Most managed IT providers review security alerts during business hours as part of general support, which is genuinely useful but not the same as MDR. True MDR means a dedicated security operations function actively watching in real time, including outside standard hours, with defined response times for what happens when something fires.
Does MDR replace our IT provider?
No. Your IT provider still handles patching, backups, helpdesk, and day-to-day support. MDR is a specific security monitoring layer that sits alongside that relationship, sometimes delivered by the same provider, sometimes by a specialist partner they work with.
24/7 monitoring and response are standard inclusions in our cybersecurity services for Perth businesses.
Cybersecurity Services →Not sure if anyone's actually watching your alerts?
Call 0433 087 091 for a free, no-obligation review of your current detection and response coverage.
Book a Free ConsultationFor related reading, see EDR vs Antivirus, Cyber Insurance for Perth Businesses, and What to Do in the First Hour of an IT Emergency.