Understand how attackers compromise organisations through vendors and software dependencies, and how to assess and manage third-party risk.
Supply Chain Security
A supply chain attack compromises a trusted supplier or software component to gain access to the supplier’s customers. Rather than attacking a hardened target directly, attackers compromise the weakest link in its supply chain.
How a Supply Chain Attack Works
Notable Supply Chain Attacks
| Attack | Year | Method | Impact |
|---|---|---|---|
| SolarWinds Orion | 2020 | Malicious update to IT monitoring software | ~18,000 organisations; US govt agencies |
| Kaseya VSA | 2021 | Exploit in MSP remote management tool | ~1,500 businesses via MSP clients |
| Log4Shell | 2021 | Vulnerability in widely-used Java logging library | Hundreds of millions of systems worldwide |
| XZ Utils backdoor | 2024 | Nation-state planted backdoor in Linux utility | Discovered before widespread exploitation |
| npm / PyPI malicious packages | Ongoing | Typosquatting and dependency confusion | Targets developers directly |
Why MSPs Are High-Value Targets
As a managed service provider, your organisation has privileged access to multiple client environments. This makes you an attractive “island hopping” target:
⛔ Important
A compromised MSP is a compromised client. Attackers who breach an MSP’s remote management tools (RMM) can potentially push malware, access data, and move laterally across every client the MSP manages simultaneously. This is why MSP security practices must meet or exceed enterprise standards — the consequences of failure extend to every client.
Defending Against Supply Chain Attacks
| Control | What It Addresses |
|---|---|
| Vendor risk assessments | Evaluate suppliers’ security posture before granting access |
| Principle of least privilege for vendors | Vendor access should be scoped to minimum needed; time-limited |
| Monitor vendor activity | Log and alert on all actions taken by third-party tools and accounts |
| Software Bill of Materials (SBOM) | Know every component in your software — track vulnerabilities |
| Verify update signatures | Confirm software updates are signed by the legitimate publisher |
| Network segmentation | Isolate third-party remote access from sensitive systems |
✓ Key Point
When a major supply chain vulnerability is disclosed (like Log4Shell), the first question is: do we use this component, directly or indirectly? Maintaining an up-to-date inventory of software and dependencies (an SBOM) is what allows you to answer that question in hours rather than weeks.
How secure are your suppliers?
Your security is only as strong as the vendors, software, and service providers you trust. Mobile Techs IT Service helps Gold Coast businesses manage third-party risk — vendor security reviews, tightly scoped and monitored vendor access, disciplined patching when supply chain vulnerabilities hit the news, and network segmentation that keeps third-party access away from your critical systems. Home users welcome too — on-site or remote, anywhere in Australia.
Review your supply chain risk → or call 1300 644 588
