In the age of hybrid work, Microsoft Teams has become the digital heartbeat of collaboration. Channels buzz with updates, decisions are made in real-time, and files are exchanged with a click. But with that ease comes a hidden, often overlooked risk: oversharing.
At Opsin Security, we’ve seen it repeatedly ─ critical information silently leaking inside the organization, not from malicious intent, but from misunderstood platform behaviors.
This article unpacks why Teams is one of the most common sources of oversharing across enterprises, and how you can mitigate it without disrupting collaboration or innovation.
Microsoft Teams is deceptively simple. Create a team, spin up channels, drop in documents. What most security leaders don’t realize is what happens behind the scenes:
And here’s where it gets more concerning: Microsoft Copilot can index and surface content from public SharePoint sites, even if that content was never meant to be broadly visible.
In other words: That internal Q1 financials PDF shared in a “public” project channel? It might be one prompt away from appearing in an executive assistant’s Copilot suggestions.
The core issue isn’t a bug. It’s a lack of clarity:
The result? Sensitive documents like financial plans, acquisition decks, or employee HR data are stored in places where access is misaligned with intent.
At Opsin, we’ve built controls that allow organizations to secure GenAI applications and their underlying data sources, including Microsoft Teams, without slowing down productivity.
Here’s how we help reduce oversharing risk in Teams environments:
Opsin connects to Microsoft copilot to detect:
We generate full context around these oversharing issues, including the teams channel, SharePoint site involved, and the reason the exposure occurred. Then, we deliver clear, actionable remediation steps so you can quickly restrict access to overshared data.
This helps security leaders and platform teams see where exposure exists ─ before Copilot or other GenAI tools do.
Oversharing isn’t a one-time event. It’s an ongoing risk as new teams and channels are created daily. Opsin continuously monitors for oversharing events and automatically responds to reduce exposure over time.
This real-time detection ensures your organization does not inadvertently expose sensitive or regulated data to GenAI tools, even as your Teams usage evolves.
We enable a scalable security model by:
The promise of Teams and Copilot is incredible: faster decisions, better knowledge access, and always-on productivity. But without visibility and control, those benefits come with real risks.
With Opsin Security, you don’t need to choose between innovation and protection. You can secure Microsoft Teams and GenAI applications by design ─ and keep your sensitive data where it belongs.
Let’s talk. If you’re seeing Teams data in unexpected places, or just want to ensure your Copilot usage doesn’t open new doors to old risks, request a demo or contact us to see how we help security-forward organizations regain control.
In the age of hybrid work, Microsoft Teams has become the digital heartbeat of collaboration. Channels buzz with updates, decisions are made in real-time, and files are exchanged with a click. But with that ease comes a hidden, often overlooked risk: oversharing.
At Opsin Security, we’ve seen it repeatedly ─ critical information silently leaking inside the organization, not from malicious intent, but from misunderstood platform behaviors.
This article unpacks why Teams is one of the most common sources of oversharing across enterprises, and how you can mitigate it without disrupting collaboration or innovation.
Microsoft Teams is deceptively simple. Create a team, spin up channels, drop in documents. What most security leaders don’t realize is what happens behind the scenes:
And here’s where it gets more concerning: Microsoft Copilot can index and surface content from public SharePoint sites, even if that content was never meant to be broadly visible.
In other words: That internal Q1 financials PDF shared in a “public” project channel? It might be one prompt away from appearing in an executive assistant’s Copilot suggestions.
The core issue isn’t a bug. It’s a lack of clarity:
The result? Sensitive documents like financial plans, acquisition decks, or employee HR data are stored in places where access is misaligned with intent.
At Opsin, we’ve built controls that allow organizations to secure GenAI applications and their underlying data sources, including Microsoft Teams, without slowing down productivity.
Here’s how we help reduce oversharing risk in Teams environments:
Opsin connects to Microsoft copilot to detect:
We generate full context around these oversharing issues, including the teams channel, SharePoint site involved, and the reason the exposure occurred. Then, we deliver clear, actionable remediation steps so you can quickly restrict access to overshared data.
This helps security leaders and platform teams see where exposure exists ─ before Copilot or other GenAI tools do.
Oversharing isn’t a one-time event. It’s an ongoing risk as new teams and channels are created daily. Opsin continuously monitors for oversharing events and automatically responds to reduce exposure over time.
This real-time detection ensures your organization does not inadvertently expose sensitive or regulated data to GenAI tools, even as your Teams usage evolves.
We enable a scalable security model by:
The promise of Teams and Copilot is incredible: faster decisions, better knowledge access, and always-on productivity. But without visibility and control, those benefits come with real risks.
With Opsin Security, you don’t need to choose between innovation and protection. You can secure Microsoft Teams and GenAI applications by design ─ and keep your sensitive data where it belongs.
Let’s talk. If you’re seeing Teams data in unexpected places, or just want to ensure your Copilot usage doesn’t open new doors to old risks, request a demo or contact us to see how we help security-forward organizations regain control.
