Every growing business has at least one lingering privilege management issue. It’s not because your team is lazy. It’s because organizations grow, restructure and hire far faster than manual access processes can keep up.

When roles evolve or contractors come and go, permissions accumulate behind the scenes—creating invisible attack paths.

In this post, we list the seven most common privilege access mistakes based on our experience and expertise as a data security and cybersecurity company. We’ll also look at how they show up in real‑world breaches and explain why the underlying causes are organizational rather than technical.

We’ll also highlight how a zero‑trust approach, privileged access management (PAM), and database‑privileged access management (DBPAM) can help you prevent these issues before they turn into headlines.

TABLE OF CONTENTS

Granting Excessive Access by Default

Not Removing Access When Roles Change or Employees Leave

Poorly Defined Roles and Permissions

Shared or Generic Accounts

Overreliance on Manual Access Management

Allowing Permanent Elevated Privileges

Treating Privilege Management as a One‑Time Setup

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1. Granting Excessive Access by Default

When onboarding a new employee or contractor, it’s tempting to grant broad access “just in case” to avoid bottlenecks. These well‑intentioned shortcuts dramatically increase your attack surface and allow a single compromised account to access sensitive data.

Real‑World Examples

• Dropbox Sign breach (May 2024) – Attackers exploited a single service account with broad privileges. Because the account was over‑provisioned, they accessed the entire customer database, including emails, hashed passwords, API keys, OAuth tokens and MFA details.

• Tesla new‑hire data theft (January 2021) – A newly hired engineer was given access to 26,000 proprietary files within days of joining the company. The employee copied manufacturing and software source code to his personal Dropbox account in his first week. This happened because onboarding teams granted access in advance.

• OWASP statistics – The OWASP Foundation has recorded hundreds of thousands of broken access control vulnerabilities in contributed projects, largely driven by over‑permissioned roles and service accounts.

Root Causes

How to Fix It

Adopt the principle of least privilege. Break down broad roles into granular entitlements and grant access only when a user needs it.

Mamori.io allows you to provision just‑in‑time database sessions instead of standing accounts, so new hires receive minimal rights and can request elevation when required. Coupled with micro‑segmentation and strong multi‑factor authentication, you reduce the attack radius if an account is compromised.

2. Not Removing Access When Roles Change or Employees Leave

“Zombie” accounts are ticking time bombs. Former employees carry both the credentials and the motive to misuse them, while attackers actively scan for stale accounts that slip through the offboarding cracks.

Real‑World Examples

• FinWise Bank (2025) – A former employee retained access to sensitive customer systems after leaving. Because their account wasn’t deactivated, nearly 700,000 consumer records were exposed when the credentials were used to gain unauthorized access.

• U.S. State Government (2024) – Threat actors obtained leaked credentials belonging to a former employee whose Active Directory account had not been disabled. They authenticated via the internal VPN, accessed a virtual machine and escalated to an administrator account. The breach went undetected because no offboarding event triggered a review.

• Cash App/Block (2021–2022) – After leaving the company, a former employee downloaded reports containing customer brokerage data. The company later settled the resulting lawsuit for $15 million because the ex‑employee’s access wasn’t revoked promptly.

• Verizon DBIR statistics (2024) – According to Verizon’s 2025 Data Breach Investigation Report, insider misuse remains a major issue, with 22% of breaches involving insiders, often due to failures in deprovisioning.

‍Root Causes

How to Fix It

Automate deprovisioning across all systems. Use a single identity source of truth that integrates HR events with privilege workflows, so that when someone changes roles or leaves, their entitlements expire automatically.

Mamori.io automates these workflows entirely (see automate ISO 27001 access controls). Mamori.io ties session access to real‑time authentication events using policies, making it impossible to login without an active employment status. Continuous auditing and anomaly detection further identify lingering access before attackers do.

3. Poorly Defined Roles and Permissions

‍Overly broad or outdated roles create structural vulnerabilities that persist across the organization. When employees can access data outside their job scope, misuse can go unnoticed for months or years.

Real‑World Examples

• Insider data sales at major banks (2024) – A Bloomberg investigation revealed that low‑level employees at top U.S. banks, including JPMorgan and Bank of America, sold customer data via Telegram channels. Analysts noted that these employees had access to far more information than their jobs warranted because role templates were too broad.

• Marks & Spencer contractor compromise (2025) – A contractor working for Marks & Spencer (via Tata Consultancy Services) had their email credentials phished, exposing over 9.4 million customer records. Investigators found that contractor permissions were defined against broad internal roles rather than scoped to specific systems.

• Ubiquiti Networks extortion (2021) – A senior IT employee misused a bundled administrator role with access to AWS, GitHub and other internal systems, stealing data and attempting to extort his employer. The single “admin” role had no functional boundaries, making abuse easy.

Root Causes

How to Fix It

Perform role audits to understand which permissions are actually used in each job and decompose broad roles into smaller, purpose‑built ones.

Aside from preset policies, Mamori.io allows the use of just‑in‑time session and on-demand permission escalations so that cross‑functional teams can request what they need without becoming permanently over‑privileged.

4. Shared or Generic Accounts

Using shared credentials destroys accountability. If several people share an admin password, it’s impossible to know who did what. When an attacker compromises one user, everyone’s access is compromised.

Real‑World Examples

• Uber contractor credential compromise (2022) – Attackers found a contractor’s password on the dark web and social‑engineered their way past two‑factor authentication. Because the contractor’s account included “super admin” access to Uber’s Slack and Google G Suite, the attackers could configure core systems. The incident highlighted how shared credentials and over‑scoped access magnify the impact of a single compromise.

• Okta support system breach (2023) – A shared support account used by a third‑party vendor was compromised, giving attackers access to files uploaded by Okta’s customers. With multiple vendor employees sharing the same credential, investigators could not determine whose actions led to the breach.

• Schneider Electric Jira server breach (2024) – Hackers exploited exposed credentials for generic service accounts in Schneider Electric’s development environment, scraping 40 GB of data—about 400,000 records.

Root Causes

How to Fix It

Retire shared and generic accounts wherever possible. Enforce individual identities with strong multi‑factor authentication and assign each privileged user a unique account tied to their personal login.

Mamori.io enables organizations to achieve a zero-trust architecture. We integrate with MFA providers and automatically record every access session to ensure accountability. For vendors, we can issue temporary, scoped credentials that expire automatically.

5. Overreliance on Manual Access Management

Spreadsheets, email chains and ad‑hoc approvals might work for ten users, but they collapse under the weight of hundreds of applications and thousands of employees. Manual processes create hidden permissions, inconsistent enforcement and a backlog of errors that attackers can exploit.

Real‑World Examples

• SolarWinds supply chain attack (2020) – Attackers moved laterally inside SolarWinds for months because access across the environment was managed manually and inconsistently. There was no automated way to flag anomalous privilege usage or detect accounts with excessive standing access.

• Microsoft Midnight Blizzard (2024) – Russian state‑sponsored actors used password‑spray attacks to compromise accounts lacking multi‑factor authentication. Microsoft’s post‑incident review noted that inconsistent manual oversight of service account privileges contributed to the scope of the breach.

• Widespread pattern – IBM’s Cost of a Data Breach report shows that it takes 277 days on average to identify and contain a breach. Extended dwell time is often a symptom of manual, reactive access reviews that fail to detect escalating abuse.

Root Causes

How to Fix It

Automate the entire privilege lifecycle—from request to approval, provisioning, expiry and audit.

With Mamori.io, access policies are codified and enforced centrally, and any exception triggers an alert. Just‑in‑time elevation means that elevated rights exist only when needed and are logged in detail. Automated reviews surface dormant accounts and unused permissions so that nothing falls through the cracks.

6. Allowing Permanent Elevated Privileges

Standing administrator accounts are prime targets. Every day an elevated account exists is another day it can be phished, brute‑forced or abused from the inside.

Real‑World Examples

• Colonial Pipeline ransomware (2021) – Attackers broke in using a legacy VPN account that had no multi‑factor authentication. Critically, the account had standing administrative privileges. The single compromised password allowed the attackers to move laterally and deploy ransomware that shut down fuel supply to the U.S. East Coast.

• Permanent domain admin exposure – Microsoft’s own security guidance notes that domain administrator accounts with permanent privileges are targeted 24/7 because they never expire. Most organizations rarely need domain‑wide privileges outside of specific maintenance windows.

• BeyondTrust breach (2024) – Attackers used a compromised API key with permanent elevated privileges to reset passwords for local application accounts. There was no time‑bound or task‑scoped limitation, so the key granted unrestricted access until revoked.

Root Causes

How to Fix It

Implement just‑in‑time (JIT) privileged access. For legacy systems that lack JIT support, use jump servers with session recording and strict network segmentation.

With Mamori.io, users request elevation for a specific task, and the system grants it only for the duration required. When the session ends, privileges are automatically revoked. Combining JIT with multi‑factor authentication and least privilege reduces the window of opportunity for attackers.

7. Treating Privilege Management as a One Time Setup

Privilege management is not a project you complete once. It’s a discipline that must evolve with your business. When you set access rules and never revisit them, permissions drift away from their intended scope. Attackers thrive in that drift.

Real‑World Examples

• Marriott/Starwood breach (2014–2018) – Attackers infiltrated Starwood’s network in July 2014 and remained undetected until 2018 after Marriott’s acquisition. Investigators found that privilege controls had not been updated since Starwood’s original configuration, allowing attackers to masquerade as legitimate users for four years.

• Coinbase support bribery (2025) – Scammers bribed external support agents to steal customer data. Access permissions and monitoring thresholds in the support environment hadn’t been revisited since deployment, leaving stale policies that didn’t reflect current risk.

• Industry statistics – OWASP and data breach reports consistently rank access control failures as the top cause of breaches year after year. The problem isn’t that organizations never implement controls; it’s that they fail to maintain and audit them continuously.

‍Root Causes

How to Fix It

Embed privilege management into day‑to‑day operations. Schedule continuous, automated access reviews that compare actual usage against intended permissions.

Mamori.io detects anomalous activities and access patterns in real time, prompting immediate remediation and notification to stakeholders. In addition to this tool, you need to make privilege maintenance part of change management and link it to HR events so that policies evolve with your organization.

Closing Thoughts

These seven mistakes are present in almost every organization, not because people are careless but because manual processes cannot keep up with modern business dynamics. Large workforces, fluid roles and complex environments create conditions where privilege sprawl is inevitable.

By recognizing that privilege management is ongoing, and by adopting just‑in‑time access, granular roles, individual accountability and automated deprovisioning, you can dramatically shrink your attack surface.

About Mamori.io

Mamori.io is an all-in-one solution that provides zero-trust security on multiple layers – from the network, servers, all the way down to the database. The same system can also help organizations comply with privacy regulations, reduce cyber insurance premiums, and automate ISO 27001.

For small businesses, Mamori.io has all the features to completely secure their data. For large businesses, Mamori.io covers security gaps, secures external vendor access, and provides access controls to the database.

Schedule a demo with Mamori.io or request your free trial. If you’re a small business with $10 million USD in gross revenue or less, you can get 20 free Mamori.io licenses.

The post 7 Privilege Management Mistakes That Put Business Data at Risk appeared first on Zero Trust Data Security Blog – mamori.io.

*** This is a Security Bloggers Network syndicated blog from Zero Trust Data Security Blog - mamori.io authored by Victor Cheung. Read the original post at: https://www.mamori.io/blog/privilege-management-mistake-put-business-data-at-risk