Microsoft Subprocessors
Microsoft subprocessors are third-party vendors that Microsoft hires to process customer data. You review them in the trust portal and set up support lockbox controls. Most teams check these vendor lists once a year for audits. They also grant broad cloud roles to their own staff and contractors. When roles are too broad, users can read or change sensitive data without limits. How microsoft subprocessors and native access controls work Cloud providers use outside companies to help run hardwar
Microsoft Entra ID (Azure AD): the complete guide
Architecture patterns, implementation strategies, and security best practices. Delivered to your inbox.
Microsoft subprocessors are third-party vendors that Microsoft hires to process customer data. You review them in the trust portal and set up support lockbox controls. Most teams check these vendor lists once a year for audits. They also grant broad cloud roles to their own staff and contractors. When roles are too broad, users can read or change sensitive data without limits.
How microsoft subprocessors and native access controls work
Cloud providers use outside companies to help run hardware, support, and cloud tools. These microsoft subprocessors handle tasks like fixing, hardware repair, and data center upkeep. Microsoft splits these vendors into groups based on what services they touch. Some vendors handle core cloud storage, while others help with specific software apps.
To check these vendors, your security team downloads the official list from the trust portal. You can also sign up for alerts when a new vendor joins the list. If you spot a risk, you review the contract terms for that service.
Beyond checking lists, you can turn on native customer lockbox features in your cloud account. When a support engineer needs to touch your system, the tool sends an approval request. Your admin reads the ticket reason and clicks approve or deny. The cloud platform also lets you assign role-based rules to your own team and outside contractors. You map user groups to roles that allow reading settings or running specific cloud tasks.
What native vendor lists solve and what they leave open
The official vendor list gives your legal team clear records for privacy audits. It shows which outside companies might touch your systems and where they work. Customer lockbox rules also stop support staff from entering your account without a ticket. Together, these tools help you track who can log in at the account level.
Still, account-level checks only decide who gets through the front door. Once a contractor, support tech, or engineer logs in, native roles stay static. A role that allows database checks lets that person run any query during their shift. Native cloud roles do not inspect individual database queries or command lines in flight.
Microsoft Entra ID (Azure AD): architecture patterns and best practices
Continue reading? Get the full guide.
Free. No spam. Unsubscribe anytime.
This creates a gap when your own engineers or third-party staff debug live systems. A user with read access can pull whole tables full of customer emails and card numbers. Account logs show that a login happened, but they often miss the exact command run. To protect live data, teams need controls that check every command and mask sensitive fields in results.
How to tighten third-party and internal access workflows
Start by cutting down standing roles for both internal staff and external vendors. Remove permanent admin roles from daily user accounts across your cloud setup. Require users to ask for specific permissions only when they have an active task.
Next, separate the right to log in from the right to read raw records. Even when a user has a valid session, they rarely need raw phone numbers or national IDs. Set up data masking so queries rewrite matched fields in results before they reach the screen. Finally, log every query and command at the action level so auditors see exact activity.
Govern statements and responses across databases and APIs
Good config and scoped roles are needed setup. They do not check single queries in flight or mask sensitive fields in returned rows. Across Postgres, MySQL, SQL Server, MongoDB, ClickHouse, Kubernetes APIs, SSH, and internal HTTP endpoints, hoop.dev runs beside each supported service as an open-source proxy, a sidecar for your database or API.
First, hoop.dev guardrails block banned queries before they run. Then hoop.dev data masking rewrites matched sensitive values in responses in memory. The audit trail records every statement and verdict per resource. Furthermore, hoop.dev holds SOC 2 Type II and is open source on GitHub.
Frequently asked questions
How often does the microsoft subprocessors list change?
Microsoft updates the list whenever it adds or removes a third-party vendor. You can set up notifications in the trust portal to get an alert before changes take effect.
Does customer lockbox block all third-party vendor access?
No, customer lockbox only covers specific support workflows where an engineer requests direct data access. It does not inspect commands run by your own contractors or internal staff during approved sessions.
How can teams protect PII during vendor or contractor debugging?
Teams should inspect queries in flight and apply data masking to sensitive fields. Masking rewrites matched emails, phone numbers, and card numbers in query results during live sessions.
Related guides
In this post