Most businesses disable a departing employee's email account and recover their laptop, but many overlook access to SaaS applications. These forgotten accounts, often called zombie accounts, can remain active for months after someone leaves the organisation, creating unnecessary security risks. A simple SaaS access audit can help identify and remove these accounts before they become a problem.
A zombie account is an active user account belonging to someone who no longer works for the business. The danger is simple: the credentials remain valid. If the former employee still has access, or if their credentials are compromised after they leave, systems and data may remain exposed. Many organisations discover former employees still accessing business applications months after their departure, often by accident rather than through a planned audit.
Use this repeatable process to vet extensions without creating an IT bottleneck:
Services such as OneDrive, Google Drive and Dropbox are common sources of lingering access. Shared folders, guest accounts, external links and personal email shares are frequently overlooked during offboarding, leaving sensitive company information accessible long after an employee has left.
Applications such as Salesforce, HubSpot, Jira, Monday.com, Asana and Notion are often managed by departments rather than IT teams. As a result, user accounts can remain active without anyone realising.
The greatest risk often comes from software that IT doesn't know exists. Employees frequently sign up for tools using their company email address, including AI platforms, survey software, design tools and reporting applications. These accounts are rarely included in formal offboarding procedures and can easily be forgotten.
Start by identifying all business applications in use, this process often reveals applications that are not actively managed by IT. So review:
Review staff departures from the last 12 months and cross-reference them against your SaaS inventory. Review staff departures from the last 12 months and cross-reference them against your SaaS inventory. For each platform, check:
Once identified, remove unnecessary access and document your findings. Regular reviews help turn a one-off clean-up exercise into an ongoing security control. To prevent future issues:
Removing zombie accounts is one of the simplest ways to strengthen your security posture. A comprehensive offboarding process should cover far more than email accounts and company devices. Every business application should be reviewed whenever an employee leaves to ensure access is removed promptly and consistently.

























