Summary: Vendors are essential to modern businesses, but every outside company with access to your systems, accounts, devices, network, or data can introduce additional IT risk. Centennial businesses can reduce that risk by maintaining an inventory of technology vendors, limiting third-party permissions, requiring multifactor authentication, reviewing cloud applications, documenting responsibilities, removing unnecessary access, and establishing a process for evaluating new providers. Vendor risk management does not have to become an enterprise-level compliance program. It starts with knowing which third parties can access your technology and making sure that access is appropriate and secure.
What Is Third-Party IT Risk?
Most businesses rely on outside companies to operate.
An accounting firm may access financial systems. A software company may host customer information. A marketing agency may have administrative access to a website. A payroll provider stores employee information. A copier vendor may remotely support network-connected equipment. An IT provider may have privileged access to computers, servers, networks, cloud platforms, and backups.
These relationships are often necessary.
They also create additional technology dependencies.
Third-party IT risk is the potential security, operational, privacy, or business risk created when an outside organization provides technology, handles information, or has access to company systems.
Managing that risk does not mean avoiding vendors.
It means understanding those relationships and managing them intentionally.
Rocky Mountain Tech Team provides managed IT services and IT support in Centennial, CO to help organizations maintain greater visibility and control across their technology environments.
Why Vendor Risk Matters for Centennial Businesses
Centennial has a diverse and technology-dependent business environment.
According to the City of Centennial’s overview of its top employers and industries, professional and business services represent the city’s largest employment sector. Other significant industries include education and health services, financial activities, construction, information, manufacturing, wholesale trade, and hospitality.
The city’s largest employers also span telecommunications, aerospace, healthcare, electronics, insurance, engineering, construction, technology, and distribution.
Many organizations in these industries depend on third parties.
A professional services company may use dozens of cloud applications. A healthcare organization may share sensitive information with outside service providers. A construction company may rely on estimating, project management, payroll, and file-sharing platforms. An engineering or aerospace business may have suppliers and contractors that need controlled access to information.
The more connected a business becomes, the more important it is to understand who has access.
1. Build an Inventory of Technology Vendors
You cannot manage vendors you do not know exist.
Start by creating an inventory of third parties that interact with your technology or information.
That list may include:
- Microsoft 365 or Google Workspace providers
- Cloud software companies
- Payroll and HR platforms
- Accounting applications
- Customer relationship management systems
- Website hosting companies
- Marketing agencies
- Internet and telecommunications providers
- Cybersecurity vendors
- Backup providers
- Managed IT providers
- Industry-specific software companies
- Hardware and equipment vendors
- Payment processing services
The list can become surprisingly long.
For each vendor, document what service it provides, what information it handles, what systems it can access, who owns the relationship internally, and how critical the service is to business operations.
This process overlaps with broader technology inventory management. RMTT’s guide to IT asset management for small businesses explains why businesses should track not only physical hardware but also software, cloud platforms, and other technology assets.
2. Identify Which Vendors Have Access to Sensitive Systems
Not every vendor creates the same level of risk.
A company that supplies printer paper is different from a company with administrative access to your Microsoft 365 environment.
Prioritize vendors according to the access they have.
Ask whether the vendor can access employee information, customer records, financial data, email accounts, cloud files, servers, backups, network equipment, administrative credentials, or other sensitive systems.
Pay particular attention to vendors with privileged access.
Administrative permissions can allow a user to create accounts, change security settings, install software, access data, or modify systems.
Those capabilities may be necessary for the vendor to perform its job, but they should be understood and controlled.
3. Give Vendors Only the Access They Need
Third parties should not automatically receive broad access simply because it is convenient.
Access should match the work being performed.
If a vendor only needs to manage one application, it may not need administrative rights across the entire network.
If a consultant needs temporary access to complete a project, that access may not need to remain active indefinitely.
This concept is commonly called least privilege.
The goal is to provide enough access for someone to perform an authorized task without giving them unnecessary permissions.
CISA’s guidance for small and midsized businesses assessing vendors and suppliers specifically addresses risks involving physical and logical access, cloud-hosted solutions, and managed service providers.
4. Avoid Sharing Employee Credentials With Vendors
A vendor should generally have its own identifiable account when access is required.
Sharing an employee’s username and password creates accountability problems.
If several people use the same credentials, it becomes harder to determine who accessed a system or made a change.
Shared credentials also create offboarding problems.
If a contractor stops working with your business, changing a shared password could affect other users. If the password is not changed, the former contractor may retain access.
Individual accounts provide greater visibility and make it easier to disable access without affecting anyone else.
5. Require Multifactor Authentication
Passwords alone can be compromised through phishing, credential reuse, malware, and other attacks.
Multifactor authentication adds another verification step.
Businesses should require MFA for vendor accounts whenever the system supports it, particularly for accounts with administrative or remote access.
The same principle applies to employees.
RMTT’s guide to Microsoft 365 security best practices explains why MFA is one of the most important protections businesses can implement for cloud accounts.
For highly privileged access, businesses should consider the strongest authentication options supported by the platform and appropriate for their environment.
6. Review Remote Access Tools
Some vendors need remote access to provide support.
An IT provider may remotely troubleshoot a computer. A software company may support an application server. An equipment vendor may remotely monitor a specialized system.
Remote access can be useful, but it should be controlled.
Businesses should know which remote access tools are installed, who can use them, which devices can be reached, and whether access is logged and protected by MFA.
Unknown remote access software deserves investigation.
Old tools can remain installed long after the vendor relationship that required them has ended.
Maintaining an accurate inventory of software and devices can help identify these situations.
7. Evaluate Cloud Applications Before Employees Adopt Them
Third-party risk does not only come from formal vendor contracts.
Employees can create new vendor relationships simply by signing up for online applications.
A team might start using a file-sharing service, AI tool, project management application, online PDF utility, or communication platform without involving management or IT.
This is sometimes called shadow IT.
The application may be useful, but the organization should still understand what company information is being uploaded, how accounts are protected, who controls the account, and what happens to the data if the service is no longer used.
Businesses can reduce this risk by establishing a process for approving new applications.
Employees should have a clear way to request useful tools without feeling that the easiest option is to bypass IT entirely.
8. Ask Vendors About Their Security Practices
Businesses do not need to perform a forensic cybersecurity investigation of every supplier.
They should, however, ask appropriate questions of vendors that will handle sensitive information or receive significant system access.
Questions might include:
- Does the vendor require MFA for employees?
- How is customer information protected?
- How is privileged access managed?
- What happens when one of the vendor’s employees leaves?
- How are security updates handled?
- Does the vendor maintain backups where appropriate?
- How would the vendor notify your business of a security incident?
- Does it use subcontractors that may also access your information?
- What happens to your data when the relationship ends?
The appropriate depth of review depends on the importance of the vendor and the information involved.
NIST’s Cybersecurity Supply Chain Risk Management Due Diligence Assessment Quick-Start Guide, published in July 2026, provides guidance for assessing technology suppliers and products as part of cybersecurity supply-chain risk management.
9. Understand Who Is Responsible for What
Outsourcing a technology function does not mean a business can stop paying attention to it.
Responsibilities should be clearly defined.
If a vendor manages backups, who verifies that backups are successful?
If a software provider hosts important data, what recovery options does the provider offer?
If an IT company manages employee accounts, who inside the business authorizes account creation and removal?
If a cybersecurity incident occurs, who investigates it and who communicates with management?
Written agreements can help clarify responsibilities.
NIST’s small-business cybersecurity guidance notes that businesses using outside cybersecurity providers should clearly understand and document service levels, responsibilities, and expectations.
This reduces assumptions.
10. Include IT in the Vendor Selection Process
Businesses frequently involve IT after a technology purchase has already been made.
A department selects an application, signs a contract, and then asks IT to make it work.
That order can create problems.
Before purchasing technology, businesses should consider involving whoever manages IT.
Technical review may identify issues involving compatibility, cybersecurity, authentication, backups, data ownership, integration, licensing, or support.
This does not mean IT should control every purchasing decision.
It means technology risks and requirements should be evaluated before the business becomes dependent on the product.
11. Pay Attention to Vendors With Administrative Access
Some third parties require extensive privileges.
Managed IT providers are a common example because they may need to support computers, manage Microsoft 365, maintain networks, monitor backups, deploy cybersecurity tools, and troubleshoot servers.
That level of access makes vendor selection especially important.
NIST notes that outsourcing cybersecurity to managed service providers and other specialists is common among small businesses that may not have the resources or expertise for dedicated internal cybersecurity staff.
NIST also recommends defining the cybersecurity outcomes the organization wants, understanding the provider’s experience, and documenting responsibilities and expectations.
Businesses evaluating IT support should therefore consider more than price.
They should understand how the provider protects privileged accounts, documents systems, manages employee access, responds to incidents, and communicates with clients.
12. Remove Vendor Access When a Project Ends
Temporary access has a habit of becoming permanent.
A contractor receives an account for a three-month project.
Two years later, the account is still active.
A marketing agency receives administrative access to the website.
The business changes agencies, but the old credentials remain.
A software consultant installs a remote access application that nobody removes after the engagement.
Vendor offboarding should be a defined process.
When a relationship ends, review accounts, remote access tools, API connections, shared passwords, cloud permissions, physical access, and any company devices provided to the vendor.
Remove anything that is no longer necessary.
13. Review Vendors Periodically
A vendor that was appropriate three years ago may not be the right choice today.
The vendor’s services may have changed.
Your business may now store more sensitive information in the platform.
The number of employees using it may have increased.
The vendor may have introduced new security features that have never been enabled.
The business may also be paying for a service it barely uses.
Critical vendors should be reviewed periodically.
The review does not have to be complicated.
Confirm what the service does, who uses it, what it costs, what information it contains, what access the vendor has, and whether the relationship still meets the organization’s requirements.
14. Include Vendors in Incident Response Planning
Businesses should consider third parties when preparing for cybersecurity incidents.
If a vendor account is compromised, who should be contacted?
If a cloud platform becomes unavailable, what does the business do?
If an outside provider discovers unauthorized access to your data, how will it notify you?
If a managed IT provider identifies suspicious activity, who inside your organization has authority to make decisions?
These questions should be addressed before an incident occurs.
Vendor contact information should also be accessible during an emergency.
The person who normally manages a particular vendor relationship may be unavailable when something happens.
15. Understand Your Most Critical Technology Dependencies
Vendor risk is not limited to cybersecurity.
It also involves business continuity.
Consider what happens if a critical provider becomes unavailable.
Could employees still work if the internet provider experiences an extended outage?
What happens if a major cloud application is unavailable for several hours?
Can the business access its information if a software vendor closes?
Is important information stored in a format that can be exported?
Does the company depend on one person at a vendor to understand a critical system?
CISA’s vendor and supply-chain guidance encourages businesses to consider the operational risks created by suppliers and technology providers.
Understanding these dependencies can help businesses identify where backup plans are appropriate.
16. Keep Documentation Under Your Company’s Control
Businesses should retain appropriate documentation about their own technology environment.
A company should not be completely dependent on a vendor to know which services it uses, which equipment it owns, or how critical systems are configured.
Depending on the environment, documentation may include asset inventories, vendor contacts, licensing information, network details, administrative accounts, backup information, warranties, software subscriptions, and support agreements.
Sensitive technical documentation must be protected appropriately.
The objective is organizational continuity.
If a key employee leaves or the business changes vendors, important knowledge should remain available to the company.
17. Review Third-Party Risk as Your Business Grows
Vendor management becomes more important as organizations expand.
A five-person company may use a relatively small number of systems.
After several years of growth, the same organization may have dozens of cloud applications, contractors, software providers, equipment vendors, and service companies.
No single relationship necessarily creates a problem.
The complexity comes from the combination.
Periodic technology reviews can help businesses identify vendors, accounts, applications, and permissions that are no longer necessary.
RMTT’s broader managed IT services include proactive monitoring, cybersecurity, cloud management, Microsoft 365 and Google Workspace support, networking, backups, hardware, and technology planning that can help businesses maintain greater visibility as their environments change.
Vendor Management Is Part of Modern IT Management
Businesses cannot eliminate third-party technology relationships.
Nor should they try.
Cloud platforms, software vendors, consultants, managed IT providers, payroll companies, telecommunications providers, and specialized technology partners allow smaller organizations to access capabilities that would be difficult or expensive to build internally.
The objective is to manage those relationships deliberately.
Know which vendors you use.
Understand what they can access.
Require appropriate security.
Limit privileges.
Document responsibilities.
Remove access when it is no longer needed.
Review important relationships periodically.
Those steps create a much stronger foundation than assuming every outside provider is secure simply because the company is reputable.
Build Better Visibility Into Your Centennial Business Technology
Centennial’s economy includes professional services, finance, healthcare, information technology, aerospace, engineering, construction, telecommunications, and other industries that increasingly depend on interconnected technology and outside service providers.
As those connections increase, businesses need visibility into who has access to their systems and information.
A structured approach to vendor management can help reduce unnecessary accounts, excessive permissions, unmanaged applications, forgotten remote access, and other avoidable risks.
Rocky Mountain Tech Team has supported Colorado organizations since 2002 with managed IT, cybersecurity, Microsoft 365, Google Workspace, networking, backups, hardware, cloud services, and technology projects. If your Centennial organization wants a clearer picture of its vendors, accounts, devices, security, and overall IT environment, contact RMTT to discuss your needs or schedule a New Client Audit.
Frequently Asked Questions
What is third-party IT risk?
Third-party IT risk is the cybersecurity, operational, privacy, or business risk created by outside organizations that provide technology, handle company information, or access business systems. Examples include cloud software companies, contractors, managed IT providers, payroll services, marketing agencies, and other technology vendors.
How can a small business evaluate a technology vendor?
Start by determining what information and systems the vendor will access. Ask about MFA, account security, privileged access, incident notification, backups, employee offboarding, subcontractors, and data handling. The amount of due diligence should reflect how critical the vendor is and the sensitivity of the information involved.
Should vendors have administrator access to business systems?
Only when administrative access is necessary for the work being performed. Privileged access should be limited, protected with strong authentication, attributable to identifiable users, and removed when it is no longer required.
How often should businesses review third-party access?
There is no single schedule appropriate for every organization. Critical and highly privileged vendor relationships should receive more frequent attention. Businesses should also review access whenever a contract ends, a project finishes, the vendor’s responsibilities change, or the organization makes significant technology changes.
Does RMTT provide managed IT services in Centennial, Colorado?
Yes. RMTT provides remote and onsite IT support for businesses and organizations in Centennial and throughout the Denver metro area. Services include managed IT, cybersecurity, Microsoft 365, Google Workspace, networking, backups, cloud services, hardware, employee technical support, and IT projects.
Author: Brandon Hamilton
Brandon began his IT career in the late 1990s as part of a team managing a 1,500-user corporate network. After moving from Wisconsin to Colorado in 1999, he shifted his focus to helping small and medium-sized businesses throughout the Boulder and Denver areas get more from their technology. When he’s not solving IT challenges, Brandon enjoys skiing, mountain biking, traveling, and cheering on the Green Bay Packers. Be sure to ask him about his latest adventure around the globe.
