What Is Shadow IT? How to Detect, Manage, and Prevent It
Chad BurggrafUpdated 13 min read
Shadow IT is a growing concern for IT leaders who want to protect company data while keeping end users productive.
Shadow IT happens when employees use apps, software licenses, or devices without approval from the IT department. The intent is usually to get work done faster. The result can be data breaches, compliance violations, and spending nobody tracks.
In this article, we’ll cover what shadow IT is, why it happens, common examples, and the risks. Then we’ll show how to detect it, how to decide what to do about each tool you find, and how to prevent it from coming back.
What Is Shadow IT?
Shadow information technology refers to the use of apps, SaaS software, services, or devices without the knowledge or approval of the IT department.
This often includes cloud services, personal email accounts, browser extensions, or mobile devices that employees adopt on their own, outside IT oversight.
Shadow IT rarely stems from malicious intent. Most employees use it to complete tasks faster or collaborate more easily. The problem is that IT doesn’t know these tools exist, so it can’t secure, manage, or pay for them properly.
Why Shadow IT Keeps Growing
Shadow IT isn’t new, but it has grown with SaaS. When software needed physical installation and hardware, shadow adoption was naturally limited. Today, anyone with a credit card and an email address can sign up for a SaaS tool in minutes, and many tools are free to start.
That’s why policy alone can’t eliminate it. An unenforced policy is worse than none, because it gives the appearance of control without the reality. What works is a mix of discovery, proportionate response, and an official path that is easier than the unofficial one.
Common Causes of Shadow IT
Shadow IT happens because employees want speed, convenience, or tools that fit their needs better. Here are the most common causes.
Desire for Productivity and Flexibility
Many employees adopt shadow IT because they believe it helps them get work done faster. When approved tools feel outdated or hard to use, they look for alternatives that meet their immediate needs.
Slow IT Approval Processes
Long review cycles, unclear policies, and strict vetting frustrate employees. They want tools that solve their problems now, not weeks later. Slow approvals make people more likely to turn to unapproved platforms, or to skip the process entirely.
Bring-Your-Own-Device (BYOD) Policies
BYOD is common in remote work, but it opens the door to shadow IT. Employees using their own computers, tablets, or phones may install software IT hasn’t approved.
Some staff store work files in personal cloud accounts, such as a personal Google Drive. That makes it hard for IT to secure the data and remove it during employee offboarding.
Inadequate Official IT Resources
When IT-provided tools don’t meet business needs, employees look elsewhere. Outdated software, missing features, or poor integration push teams toward unsanctioned applications.
Easy Access to Cloud and SaaS Applications
Workers can sign up for a free trial or download a SaaS product in minutes, without involving IT or security. Shadow IT can spread quickly as a result.
Lack of Awareness About Security Risks
Employees don’t always realize their actions can expose the company to data breaches. They assume a tool is safe because it’s popular or easy to install. In remote work, IT has even less direct oversight.
Examples of Shadow IT
These are the forms of shadow IT you’re most likely to find.
Unauthorized Cloud Storage and File Sharing
Employees often use free storage platforms to move and share data quickly. Files stored outside the corporate environment may lack encryption or proper access controls. A single unsanctioned file transfer can expose sensitive information.
Unsanctioned Communication Tools
When teams adopt chat or video apps, like WhatsApp, Slack, or Zoom, without IT approval, you lose control of communication channels. You can’t retain messages or show that compliance and security standards are met.
Unapproved SaaS Applications
Departments often adopt project management platforms, analytics dashboards, and task trackers without consulting IT. These apps can hold sensitive business data, and costs rise when several teams buy the same product separately.
Unapproved AI Tools
AI assistants are a fast-growing form of shadow IT. An employee who pastes customer records or internal documents into an unapproved AI tool sends that data to a vendor IT has never assessed.
Connected Apps and OAuth Grants
When an employee clicks “Sign in with Microsoft” or “Sign in with Google” on a SaaS app, they may grant it access to their mailbox, files, or calendar. Employees also connect SaaS tools to each other. Each grant is a path to company data that IT may not know about.
Rogue Software, Plug-Ins, and Browser Extensions
Employees sometimes install desktop programs, plug-ins, or browser extensions without IT approval. These may contain malware, lack patches, or request access to browsing history, passwords, or files.
Personal Devices and Email Accounts
Employees often access company systems on personal phones or tablets without proper safeguards. Some use personal email accounts to send or receive company files, which takes communication outside secure company systems.
Biggest Risks of Shadow IT
Shadow IT creates serious risks for your business.
Lack of Visibility and Control
If you don’t know which tools are in use, you can’t enforce security policies, protect sensitive data, or respond to incidents before they grow.
Security Vulnerabilities
Unsanctioned apps and personal devices may lack encryption or security patches, and they bypass normal monitoring. Attackers target these weak points. Every unknown app is a potential entry point.
Data Loss
When files live in tools outside your environment, you can’t manage or back them up properly. Employees may delete critical files by accident or move them into services with weak protection.
Compliance Issues
Shadow IT often means company data is stored in places that don’t meet regulatory requirements. App sprawl makes audits much harder, because regulators expect you to show where data lives and who can reach it. Failing to meet SOC 2, HIPAA, or other obligations can lead to fines and legal action.
Orphaned Accounts
When employees leave, IT closes the accounts it knows about. Accounts they created in unapproved tools, often with a personal email address, can’t be deprovisioned through standard offboarding. Former employees can keep access to company data indefinitely.
Higher Costs and Inefficiency
Duplicate subscriptions and overlapping apps add up quickly. Teams on different tools create duplicate work and data silos. If data leaks from an unapproved tool, cleanup costs can be far higher.
Reputational Damage
If customers learn their data was exposed through an unapproved tool, confidence in your brand suffers. Trust is hard to rebuild, and the damage can cost you clients and partnerships.
How to Detect Shadow IT
You can’t manage what you can’t see. Several complementary methods help you find out which applications are actually in use.
Cloud Access Security Brokers
Cloud access security brokers (CASBs) analyze traffic between your users and cloud services to identify the apps in use and rate their risk. Microsoft Defender for Cloud Apps, for example, analyzes firewall and proxy logs against a large catalog of cloud apps and scores each one. CASBs give the broadest network-based coverage, but they only recognize apps in their catalog.
DNS and Proxy Logs
If you don’t have a CASB, DNS query and proxy logs from managed devices show which domains are being reached. They reveal a long tail of apps and complement traffic inspection. Endpoint and browser management tools give similar visibility for people working remotely.
Sign-In and OAuth Grant Reviews
Your identity provider shows which third-party apps users have signed into or granted access to. Export the active grants regularly and compare them with your approved app list. This is one of the most valuable, lowest-effort discovery methods.
Expense Report Analysis
Scan corporate card and reimbursement data for software vendors. This catches tools paid for through channels that bypass IT procurement entirely.
Employee Surveys
Ask people which tools they use to get their work done. Surveys often surface shadow IT that technical methods miss, and they show where your approved tools fall short.
How to Assess Shadow IT Risk
Not all shadow IT carries the same risk. A note-taking tool that handles no company data is very different from an AI assistant employees paste customer records into. Match the scrutiny to the risk.
Data sensitivity matters most. Ask what data is likely flowing through the tool. Internal notes are low risk. Customer personal data, financial records, or health information are high risk, whatever the tool’s security. The tool hasn’t been assessed for the rules that apply, and there is likely no contract covering the data. Under the GDPR, for example, a processor that handles personal data on your behalf must be bound by a contract.
The vendor’s security posture matters too. An established vendor with independent audits, such as a SOC 2 Type II report, is a lower risk than a niche tool with no published security documentation.
The combination of the two decides how quickly and how firmly you respond.
How to Respond: Block, Tolerate, Adopt, or Replace
Once you’ve found a shadow app and assessed its risk, you have four options. Base the choice on the risk and the business need behind the tool.
- Block high-risk tools with no legitimate business use, especially ones handling sensitive data with poor security. Blocking without meeting the need just moves people to another unsanctioned tool.
- Tolerate low-risk tools that serve a real need, when the cost of acting outweighs the risk reduction. Acknowledge the tool, set any guardrails, and watch for changes in risk.
- Adopt tools that meet a need your approved portfolio doesn’t, pass your security and compliance checks, and have real usage. Take them through procurement, sign a proper agreement, and bring them under IT management.
- Replace high-risk tools when a viable approved alternative exists. Provide the alternative first, then remove the shadow tool.
Indiscriminate shutdowns damage productivity and IT’s reputation as a business partner. Treat each discovery as a signal of an unmet need, not just a policy violation.
10 Tips to Prevent Shadow IT
Detection finds the shadow IT you already have. These practices reduce how much new shadow IT appears.
1. Automate Provisioning
Automated user provisioning gives employees approved tools without delay. New hires who wait days for accounts are the most likely to turn to unapproved apps. When they have the right tools on day one, there’s less reason to look elsewhere, and fewer onboarding tickets.
2. Offer a Fast-Track Approval Path
Employees bypass approval when it’s slow, opaque, and usually ends in “no.” Create a fast track for lower-risk requests, such as tools that handle only non-sensitive data, use SSO, come from vendors you already have agreements with, or fall below a cost threshold. Aim to decide those in days, not months.
3. Publish a Catalog of Approved Tools
A searchable catalog of pre-approved tools, organized by use case, lets employees get what they need right away. Keep it current, and pair it with a simple request form for anything missing. When the official path is faster than signing up alone, shadow adoption loses its appeal.
4. Establish a Clear IT Usage Policy
Write down which tools are acceptable, how to request new ones, how you discover and assess unapproved ones, and what employees are responsible for. Use simple language and share it throughout the onboarding lifecycle. Frame the policy as a service that protects employees and the company, not as a restriction.
5. Educate Employees on Security Risks
Many employees use unsanctioned apps because they don’t know the risks. Training on phishing, data privacy, and compliance helps people think twice before pasting company data into an unknown tool. It also supports cybersecurity compliance.
6. Enforce Role-Based Access Control
Role-based access control (RBAC) grants permissions based on job roles, so people have what they need through official channels. RBAC tools also improve accountability and make shadow IT less attractive.
7. Govern OAuth Grants
Review active OAuth grants every quarter. Revoke grants for apps outside your catalog, apps nobody has used in months, and apps with broader permissions than their purpose needs. In Entra ID, you can restrict which apps users can consent to and turn on the admin consent workflow so users can request the rest. That turns a periodic cleanup into an ongoing control.
8. Track Software Licenses and SaaS Spend
Use software license tracking tools or a SaaS management platform to see every active license and subscription. You’ll spot unapproved tools, cut duplicate spending, and have the usage data to rationalize your portfolio.
9. Follow Strict Security Protocols
Strong defenses limit the damage when unapproved tools do appear. Require multi-factor authentication on all official systems, enforce strong password policies, encrypt sensitive data, and restrict admin privileges.
10. Close Every Account at Offboarding
When someone leaves, remove their access everywhere IT knows about, revoke their OAuth grants, and ask their manager which other tools they used. A complete IT offboarding checklist keeps former employees from holding on to company data in forgotten accounts.
Reduce Shadow IT With ezOnboard’s Automated Provisioning
Shadow IT often starts when employees can’t get the tools they need quickly enough. New hires, who haven’t yet learned how to request software, are especially likely to fill gaps with personal or unapproved tools.
ezOnboard addresses this root cause by automating user provisioning. It integrates your HR system with Active Directory and Entra ID, so a new hire’s account, groups, mailbox, and licenses are ready as soon as HR adds them.
With ezOnboard, new employees have the approved tools they need from day one, so they’re less tempted to find their own. When people leave, their directory accounts are disabled as soon as HR records the exit. Every change is recorded, and notifications flag anything that needs your review.
Schedule a demo to get started or check this ROI calculator to learn how much you can save with ezOnboard.
FAQs About Shadow IT
What is meant by “shadow IT”?
Shadow IT means using apps, software, or devices without approval from the IT department. These tools work outside official channels and lack oversight. Employees usually adopt them to complete tasks more quickly, but they introduce risks.
What are the risks of using shadow IT?
Shadow IT increases exposure to security breaches, compliance issues, and data loss. Tools may store sensitive information unsafely, and accounts in them can’t be closed when employees leave. It also creates hidden costs and inefficiencies.
What is an example of shadow IT?
A common example is an employee sharing work files through a personal Google Drive account. Another is installing unapproved software on a work laptop, or pasting company data into an unapproved AI tool. Each exposes company data to unnecessary risk.
Why do people use shadow IT?
Employees usually adopt unapproved tools to stay productive when official systems feel slow or outdated, or when getting a new tool approved takes too long. In most cases, the choice is about convenience, not malice.
How can organizations detect shadow IT without invasive monitoring?
Network-level methods, such as DNS and proxy logs or a CASB, identify which apps are in use without reading content. Reviews of sign-ins and OAuth grants in your identity provider show which apps people have connected. Expense reports reveal subscriptions bought outside IT, and employee surveys surface what the technical methods miss.
Should discovered shadow IT always be shut down?
No. Shutting tools down without meeting the underlying need hurts productivity and drives people to another unsanctioned tool. Assess the risk and the need first. Then block, tolerate, adopt, or replace the tool, and provide any approved alternative before you remove the shadow one.