Review the ecosystem once, then review plugins inside it. In about 60 minutes, answer seven questions: how code gets in, what it can reach, how updates arrive, what is isolated, how bad plugins are removed, what you can control locally, and what evidence you will keep. Write the answers on one page.
Definition
A security design review of a consumed plugin ecosystem asks how the platform's design limits risk, not whether one plugin is good. It covers browsers, editors, content management systems and SaaS marketplaces you rely on. It is separate from the plugin-by-plugin vetting in our approve a browser extension checklist.
The seven questions
| # | Question | Where to look | Good answer looks like |
|---|---|---|---|
| 1 | How does code get listed? | Marketplace policies | Published rules, automated scanning, a way to report |
| 2 | What can an installed plugin reach? | Platform docs | Documented limits, or an honest statement that it inherits host access |
| 3 | How do updates arrive? | Update docs, admin console | Controls to pause, pin or approve, and scope increases need approval |
| 4 | What is isolated? | Runtime docs | Per plugin isolation, controlled network egress |
| 5 | How are bad plugins removed? | Block list docs | A removal list that also removes installed copies |
| 6 | What can we control locally? | Admin settings | Allowlist, install restrictions, per group scoping |
| 7 | What evidence will we have? | Admin logs, exports | An inventory and approval record you can produce |
Run the hour
Minutes 0 to 10: scope. Name the ecosystem and the data it touches. List who installs plugins today.
Minutes 10 to 30: read the docs. Find the platform's own security page. Record exact statements with links, such as that an extension host has the same permissions as the editor, or that a marketplace blocks name impersonation. Quote what is stated and mark what is not.
Minutes 30 to 45: test the local controls. Open the admin console. Can you block by default? Can you scope to groups? Is there an inventory export?
Minutes 45 to 55: decide. Pick one of three outcomes: allow with an allowlist, allow with restrictions and a plugin review step, or do not allow for sensitive groups.
Minutes 55 to 60: file it. Save the one page with sources, the decision, the owner and the next review date.
A worked example in words
Suppose your teams use a notes application with community plugins. Question 2 returns the vendor's statement that plugins inherit the application's access. That points to restrictions: keep the feature off for groups handling sensitive data, require a review for others. Question 3 shows no pinning, so you add a periodic re-check. That outcome follows from the documented design, not from a vague worry.
For a sense of how different ecosystems answer these questions, see sandbox, permissions or review: three plugin protections compared.
Pitfalls
- Reviewing a plugin and calling it an ecosystem review
- Relying on marketing pages instead of technical documentation
- Skipping the update question, which is where many incidents begin
- Forgetting to schedule a re-review when the ecosystem changes its policy
When to repeat it
Repeat the review every year, and when the platform announces a change to its security model, when you add a new group of users, or after an incident involving the ecosystem.
Safeguard supports this kind of work on the software side with asset discovery, dependency scanning, policies and compliance evidence automation, so approvals and inventories can be kept current as part of your regular process.
Quick check
How is this different from vetting one plugin?
A plugin vet asks whether one plugin is acceptable. An ecosystem review asks whether the platform design makes plugins acceptable at all, and what controls you must add.
What if the vendor documentation is thin?
Write down what is not stated and treat it as unknown. Ask the vendor in writing, and set tighter local controls until you get an answer.
Last reviewed: 19 October 2026.
