Beyond SCIM: Bridging the Access Gap with Open Source Tools
Why SCIM isn't a silver bullet for SaaS security and how open-source transparency provides a better way to manage user access in a fragmented software landscape.
If you ask any IT architect how they manage user provisioning, they’ll likely give you a one-word answer: **SCIM** (System for Cross-domain Identity Management). It’s the industry standard that allows your SSO provider (like Entra ID or Okta) to automatically create and delete accounts in downstream apps.
On paper, SCIM is perfect. In reality, it covers only about 20-30% of the typical company’s SaaS stack. This is what we call the **Access Gap**, and it’s where your biggest security risks are hiding.
The Problem: The "Long Tail" of SaaS
While the heavy hitters like Salesforce, Slack, and Zoom support SCIM perfectly, the thousands of niche, industry-specific, and "Shadow IT" apps do not. For every app that supports automated provisioning, there are five more that require manual account creation by a local admin.
When an employee leaves the company, your SSO might automatically "kill" their access to Slack, but their access to the company’s social media tool, the specialized design plugin, or the legacy project management tool remains active. This "ghost access" is a primary target for attackers.
Why Proprietary Tools Struggle to Bridge the Gap
Proprietary SaaS Management Platforms (SMPs) try to solve this with custom connectors, but they are limited by their own development roadmap. If you use a tool they haven't built a connector for yet, you're back to manual tracking. Furthermore, these connectors are often "black boxes"—you can't see how they work or verify that they are accurately reflecting your security state.
The Open Source Advantage
Open source security tools provide a different path. Instead of waiting for a vendor to build a connector, the open-source model allows the community to build and share "sensors" for any application, no matter how niche. But the real power lies in **Transparency**.
- Auditability: You can see exactly how the tool is querying your app data. Trust but verify.
- Flexibility: If your company uses a custom internal tool, you can build your own sensor and plug it into the same visibility layer.
- Vendor-Neutrality: Your security data isn't locked behind a proprietary firewall. You own it.
Bridging the Gap with SasWatch
SasWatch was built to solve the Access Gap by prioritizing visibility over complex, brittle automation. By integrating with the sources of truth—like Microsoft Entra—and comparing that data against real-world app usage, SasWatch exposes the "ghost accounts" that SCIM missed.
It’s not about replacing SCIM; it’s about **augmenting it**. SCIM handles the automated heavy-lifting for your top-tier apps, while open-source monitoring provides the safety net for everything else.
Conclusion
In a world of fragmented SaaS, perfection is an illusion. You will never have SCIM coverage for 100% of your apps. But with an open-source approach to visibility, you can ensure that even the apps outside the "magic circle" are monitored, managed, and secure.
Is your Access Gap wider than you think? It’s time to find out.