Operating the world's leading security platforms.
QSI Security delivers Managed Extended Detection & Response across both IT and OT environments — so the systems behind energy, manufacturing, and public services stay secure, resilient, and online.
Our technology partners
One platform. Complete visibility across IT and OT.
Our Managed Extended Detection & Response (MXDR) unifies signals from every corner of your environment, analyses them in real time, and turns them into decisive action and clear advisory.
XDR Platform
ANALYSE • CORRELATEFull-spectrum cyber defence services
Managed Detection & Response
Safeguard your business with trusted MXDR — continuous detection, investigation, and response across IT and OT.
Learn moreManaged SOC Services
Monitor ever-evolving cyber threats with our 24/7/365 managed Security Operations Centre, run by Canadian analysts.
Learn moreCyber Exposure Management
Elevate your security posture with continuous visibility into your attack surface and prioritised remediation.
Learn moreDigital Forensics
On-demand and retainer services to navigate forensic investigations, evidence handling, and incident recovery.
Learn moreSecurity Assessments
Test the effectiveness of your cyber defences and overall readiness with structured assessments and red-team exercises.
Learn moreCompliance Readiness
Streamline your security compliance with audit and compliance services aligned to the frameworks that matter to you.
Learn more
Live OT telemetry
In-depth visibility into OT environments
Critical infrastructure runs on operational technology that was never designed to be exposed to modern threats. We close the gap between IT and OT — giving you a single, structured view of cyber risk across the entire enterprise.
- Converged IT & OT monitoring — from corporate networks down to PLCs, RTUs, and SCADA systems.
- Safety-first response — containment actions designed around operational uptime and physical safety.
- Sector expertise — energy, mining, manufacturing, municipal, and law-enforcement environments.
*Verizon Data Breach Investigations Report.
Analyst at work
A partner, not just a platform
Experience & expertise
A team with a proven track record protecting Canadian organisations against advanced threats.
Cutting-edge technology
Machine learning, AI, and threat intelligence working together for comprehensive risk management.
Tailored solutions
Strategies aligned with your unique business objectives, environment, and risk appetite.
24/7 monitoring & response
Continuous monitoring with immediate incident response — day, night, weekends, and holidays.
See QSI Security in action
A look inside our MXDR practice — the people, the platform, and the mission to defend Canada's critical infrastructure.
Trusted when it counts
QSI Security's MXDR services have been instrumental. The speed of response and informed guidance saves us from false positives masquerading as real incidents — sparing us undue financial losses and reputational damage.
QSI's experts guided our internal security team through a sophisticated phishing attack that had bypassed our existing measures — preventing an actual breach before it could take hold.
Their MXDR gives us peace of mind — our infrastructure and data are continuously monitored and protected. The 24/7 support and tailored solutions have exceeded our expectations.
From the QSI security desk
Why OT security is the new front line
The convergence of IT and OT has expanded the attack surface for critical infrastructure. Here is how to defend it.
Read article 02 — HEALTHCARESafeguarding personal health information
Practical controls that keep PHI secure and your organisation aligned with privacy obligations.
Read article 03 — MANUFACTURINGCybersecurity on the factory floor
Ransomware loves downtime. A field guide to resilience for connected manufacturing.
Read articleFrequently asked
What is Managed Extended Detection & Response (MXDR)?
How is OT security different from IT security?
What does a Security Operations Centre (SOC) actually do?
How quickly can QSI respond to an incident?
Do you work with organisations of our size?
Concerned about your current security posture?
If you are experiencing a breach — or simply want to know where you stand — let QSI Security evaluate your environment and provide tailored recommendations for resilience.