MSSP vs MSP: What's the Difference, and Which Does Your Business Need?
Part of our guide: Choosing & working with an MSSP
Two acronyms, one letter apart, and a surprising amount of confusion: MSP and MSSP. If you’ve been told “our MSP handles our security,” it’s worth understanding exactly what that does — and doesn’t — mean. The gap between the two is where a lot of Canadian businesses quietly carry more risk than they realize.
What an MSP does
An MSP — Managed Service Provider — looks after your day-to-day IT. That typically includes:
- Helpdesk and user support
- Setting up and maintaining computers, servers, and networks
- Managing email and software
- Handling backups and general troubleshooting
An MSP’s core job is keeping your technology running. Many include some security basics — antivirus, a firewall, routine patching — but security is one item on a long list, not the focus.
What an MSSP does
An MSSP — Managed Security Service Provider — is focused specifically on keeping your business secure. That includes:
- 24/7 monitoring of your systems for threats
- Detecting, investigating, and responding to attacks
- Threat hunting and endpoint detection and response
- Vulnerability management and compliance support
An MSSP’s core job is defending your business against attackers.
MSP vs MSSP at a glance
| MSP | MSSP | |
|---|---|---|
| Primary goal | Keep IT running | Keep the business secure |
| Measures success by | Uptime, tickets resolved | Threats detected and contained |
| Hours | Business hours (often) | 24/7 monitoring |
| Security depth | Basic hygiene (antivirus, firewall, patching) | Detection, response, threat hunting, compliance |
| Mindset | Make it work | Assume someone’s trying to break in |
| Responds to a breach by | Restoring service | Investigating, containing, and eradicating the threat |
The real difference: running vs. defending
Here’s the distinction in one line: an MSP keeps your technology working; an MSSP keeps it protected. Those are different goals, and they need different tools, different skills, and a different mindset. An MSP measures success in uptime. An MSSP measures it in threats caught and contained.
It’s also why “our MSP covers security” is often a hidden gap. Most MSPs do some security, but few provide round-the-clock monitoring, active incident response, or threat hunting. Patching and antivirus are necessary, but they’re the floor, not the ceiling — and they won’t catch an attacker who’s already inside using stolen credentials. The window between a break-in and real damage is exactly where an MSSP earns its keep, and it’s the part most IT-focused providers aren’t staffed to watch.
There’s also a structural reason to separate the two: asking the team that builds and runs your IT to also judge whether that IT is secure is a built-in conflict of interest. Independent eyes catch things the people responsible for “make it work” are not incentivized to flag.
So which do you need?
For most businesses, this isn’t an either/or question.
- You almost certainly need MSP-style IT support — someone to keep things running.
- As you grow, handle sensitive data, or face compliance expectations, you also need MSSP-level security — someone whose only job is defending you.
The two are complementary. A good MSSP works alongside your existing MSP or in-house IT team, not instead of them — focusing on security while your IT support keeps the lights on. This co-managed model is the norm: your MSP runs the environment, the MSSP watches it for threats, and the two coordinate when something needs fixing.
Signs you’ve outgrown “our MSP handles it”
A few common triggers mean basic, MSP-bundled security probably isn’t enough anymore:
- You hold sensitive data — client records, health or financial information, personal data covered by PIPEDA or provincial privacy law.
- A cyber-insurance application asks about 24/7 monitoring, endpoint detection and response (EDR/MDR), or incident response — controls a typical MSP doesn’t provide. Misrepresenting these is also a fast route to a denied claim. See cyber-insurance requirements in Canada.
- A client or contract requires you to demonstrate a real security program.
- You’ve had a scare — a phishing incident, a near-miss wire fraud, or unexplained account activity.
- You’re simply bigger — more staff, more systems, and more to lose if something goes wrong.
Our post on signs you need an MSSP goes deeper, and in-house security vs an MSSP covers the build-vs-buy side.
How to tell real security from a checkbox
When you evaluate any provider’s security offering — MSP or MSSP — push past the label and ask what’s actually delivered:
- Is monitoring 24/7, with humans who investigate and respond, or just alerts that pile up in a queue?
- Do they provide genuine detection and response (MDR, not just antivirus)?
- What happens during an active incident — who responds, how fast, and is it included?
- Can they support your compliance and cyber-insurance requirements with evidence?
- Is security their specialty, or a sideline to IT support?
Our list of questions to ask an MSSP is a useful checklist to bring to any conversation, and what managed security costs in Canada sets expectations on budget.
The bottom line
An MSP keeps your business running; an MSSP keeps it defended. Most growing Canadian businesses need both — and the riskiest position is assuming your IT provider has the security side fully covered when their real job is uptime.
If you’re not sure whether your current setup leaves a security gap, get in touch. We’ll give you an honest assessment — and if your IT support already has it covered, we’ll tell you that too. You can also see exactly what we cover on our services page.