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Most SaaS breaches don't start with a sophisticated exploit, they start with an ex-employee who still had access to company files. Or a Google Drive folder shared with "anyone with the link." Or a forgotten OAuth app with read access to production data.
The vulnerabilities hiding in your SaaS environment are the everyday activities that employees are doing: sharing files, sending documents to personal emails, connecting apps, and integrating AI tools.
SaaS security is very complex - and increasingly difficult to manage as your company scales, AI gets embedded into everyday workflows, and employees get onboarded and offboarded daily.
Modern SaaS environments are dynamic. Sharing permissions evolve. Employees join, change roles, and leave. Third-party apps are installed daily. AI integrations multiply. Without continuous SaaS security oversight, risk compounds silently. And it can’t be contained manually anymore.
The checklist below helps you audit where you stand across four critical categories: identity and access control, data exposure and sharing, insider threats and user behavior, and OAuth and third-party app governance.
This checklist will give you a snapshot. How you stay consistently secure and up to date as your environment changes is a different step entirely, which we’ll address later on.
Category 1: Identity & Access Control
Access misconfigurations are one of the most common entry points for SaaS security incidents. Start here.
1. Audit all active user accounts - including dormant and service accounts.
Do you know who has access to what? Most organizations don't. Start with a full inventory of active accounts across your SaaS environment. Pay special attention to service accounts, AI agents, and shared credentials that often go unreviewed for months.
2. Enforce least-privilege access across every application.
Users and employees shouldn't have more access than their role requires. Review permission levels across your critical SaaS apps - Google Workspace, M365, Slack, Salesforce, GitHub - and remove permissions that exceed the minimum necessary.
3. Confirm that offboarded employees have been fully deprovisioned.
Offboarding processes are notoriously leaky. An employee leaves, their email gets disabled, but their Salesforce access, their GitHub membership, and their Slack guest status stay active for weeks. Verify that deprovisioning is happening fully, not partially.
4. Verify MFA is enforced - not just enabled - for all users.
"MFA is available" is not the same as "MFA is required." Check that multi-factor authentication is actually being enforced for every user in every critical application, with no exceptions for legacy accounts or admin bypass paths.
Category 2: Data Exposure & Sharing
Data is an organization's biggest asset: it holds trade secrets, business operations, day-to-day processes, company records, sales information, production data, source code…every department's crown jewels live inside the SaaS environment. A hacker gains access to your Google Workspace, and your company is essentially done.
5. Identify all externally shared files and folders.
Run a full audit of files shared outside your organization across Google Drive, Slack, Box, and any other file collaboration tool. Flag anything shared with "anyone with the link" or external domains that no longer have an active business relationship.
6. Locate sensitive data stored in public or open channels.
PII, credentials, financial records, and proprietary data frequently end up in places they shouldn't be - Google Sheets with open permissions, shared Slack channels, and more. Identify where sensitive data is living outside secure contexts.
7. Check for data shared with personal accounts.
Employees regularly sync work files to personal drives or forward documents to personal email. It could be innocent, or it could be malicious. Flag any sharing activity that routes company data to non-corporate accounts or personal domains - this is one of the most common vectors for unintentional data exfiltration.
8. Review sharing permissions on your highest-risk applications.
Not all apps carry equal risk. Prioritize a deep-dive audit on the applications that touch your most sensitive data: CRM platforms, HR systems, financial tools, and code repositories. Oversharing in these environments carries the most downstream risk.
Category 3: Insider Threats & User Behavior
Insider risk isn't always malicious, sometimes employees genuinely mean well. But, ungoverned behavior creates the same exposure either way.
9. Flag users with anomalous access patterns.
Look for users accessing systems or data outside their normal working hours, from unusual locations, or at volumes that don't match their role. Anomalous patterns don't always mean malicious intent, but they always warrant a closer look.
10. Monitor for bulk download or export activity.
A user who downloads hundreds of files in a single session - especially files outside their department's scope - is a risk signal worth investigating. Most SaaS environments don't have native controls for this. Know whether yours does.
11. Review access activity for users in sensitive transitions.
Employees who have given notice, are on a performance plan, or are being moved off a project represent an elevated risk window. Review their access activity during these transition periods and consider proactively reducing permissions before a formal offboarding date.
Category 4: OAuth & Third-Party App Governance
Shadow apps are your blind spot, and most organizations have no idea how many are running. Now, with the influx of new AI productivity apps and tools being introduced to the environment every day, this SaaS security issue has never been more relevant.
12. Inventory every third-party app connected via OAuth.
OAuth makes app connections frictionless - which is exactly the problem. Employees authorize apps without IT or security involvement, and those connections quietly persist with access to email, files, calendars, and more. Build a full inventory of what's connected.
13. Assess the permission scope of each connected app.
Not all OAuth apps are dangerous, but many are over-privileged for what they actually do. An app that reads your Google Calendar shouldn't have write access to your Drive. Review the scope of permissions granted and flag anything disproportionate to the app's function.
14. Identify and revoke access for apps that are no longer in use.
Apps get authorized and forgotten. The SaaS tool a team used for one project last year still has OAuth access today. Identify inactive or abandoned apps and revoke their access - these are silent exposure points with no ongoing business justification.
15. Evaluate the security posture of your highest-risk connected apps.
Not every third-party integration is low-risk. Apps with access to production data, customer records, or financial systems deserve additional scrutiny. Review the vendor's security practices, certifications, and breach history before maintaining those connections.
SaaS Security at Enterprise Scale
This checklist serves as a starting point that addresses the basic fundamentals.
A checklist is a point-in-time assessment. You can run this audit today, find 40 issues, and spend the next three weeks manually investigating and remediating them. And then, next week, a new employee connects to a shadow app, a departing employee's access isn't fully revoked, and someone in finance shares a spreadsheet with the wrong external domain.
The checklist hasn't changed. But your environment has.
At enterprise scale - thousands of users, dozens of SaaS applications, hundreds of third-party integrations - manual audits can't keep up. Security teams don't have the bandwidth to rerun this process weekly. Remediation steps that require individual tickets and human action create a backlog that grows faster than it gets resolved.
The real problem isn't awareness. Most security teams already know what they're supposed to be checking. The problem is continuous execution: maintaining that posture across a SaaS environment that changes every single day.
A checklist gives you a starting point, but it doesn't give you a program.
Additionally, with AI-driven automation now embedded across tools (auto-provisioning users, triggering workflows, syncing data between apps, and executing actions based on behavioral signals), the attack surface shifts constantly and often invisibly.
A permission granted by an automated rule, an integration silently added by a third-party app, or an AI agent acting on stale access credentials can introduce risk before a human ever reviews a log.
Traditional quarterly audits and manual access reviews were built for the slower, more static world that we lived in 20 years ago. Today, in a stack where AI is taking actions on behalf of your users around the clock, security controls need to be continuous, automated, and policy-driven - not reactive and point-in-time.
How DoControl Protects SaaS Data 24/7
DoControl’s was built for the gap between knowing what to check and being able to enforce it continuously.
Rather than treating SaaS security as a periodic audit, DoControl runs continuous posture monitoring across your entire SaaS environment - tracking sharing activity, data access patterns, data movement, identity changes, behavioral signals, third-party app connections, misconfigurations, in real time.
DoControl is the only SSPM that also acts as a SaaS DLP; protecting the data at scale - across every vertical and entry point.
What makes DoControl different is the context it brings to each signal, alert, workflow, and remediation.
DoControl pulls in data from your HRIS, IdP, and your EDR to understand not just what's happening with the data, but who is doing the action, how they’re doing it, why they’re doing it, and whether it's actually a risk given that user's role, tenure, employment status, location, and more.
An access pattern that looks anomalous in isolation might be completely expected for a specific contractor or third-party consultant. DoControl knows the difference.
Another key part to DoControl? Additionally, when a risk IS detected, DoControl doesn't just surface an alert - it remediates it on the spot. Automated workflows can revoke external sharing, remove OAuth connections, update permissions, trigger notifications, and more - all without requiring a human to process a ticket first.
The result is a SaaS security program that doesn't depend on manual re-audits to stay current. It just IS current - all the time, around the clock.
The 15 steps above are the right questions to ask. DoControl is how you make sure the answers stay true, and the data stays secure.
Conclusion
The gaps in your SaaS environment aren't waiting for you to finish your audit. They exist right now - in access that was never removed, data that was shared too broadly, and apps that have been forgotten but never disconnected.
Use this checklist to understand where you stand.
Then, ask the harder question: how do you get back to baseline, and stay there?
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