When a company thinks about cybersecurity, it usually imagines external hackers, phishing emails, or malware coming from outside. But there is a threat that lives inside the organization, holds valid credentials, knows the systems, and often acts without anyone noticing — until it’s too late.
It’s called an insider threat, and according to the Verizon Data Breach Investigations Report, it accounts for more than 30% of all security breaches recorded globally. Of those, approximately 60% involve employees with more access permissions than they actually need to do their jobs.
The problem isn’t always malicious intent. Often it’s negligence, human error, or simply the fact that no one has audited permissions since that person joined the company three years ago.
What Is an Insider Threat and Why Is It So Hard to Detect?
An insider threat is any security risk that comes from people within the organization: current or former employees, contractors, vendors with system access, or business partners.
What makes this threat particularly dangerous is that it uses legitimate channels. There’s no forced intrusion. There’s no firewall to block. The attacker — or the careless employee — already has the keys to the house.
There are three main profiles:
The malicious insider: An employee who deliberately steals data, sabotages systems, or leaks confidential information. They may be motivated by money, revenge, or external pressure.
The negligent insider: No bad intentions, but their mistakes open the door. They share passwords, use unsecured networks, click on phishing links, or save sensitive data on personal devices.
The compromised insider: Their credentials were stolen by an external attacker who now operates from inside the organization, going undetected because they use a legitimate account.
All three are dangerous. All three can be largely prevented with proper access permissions management.
The Principle Most Companies Ignore: Least Privilege
In information security there is a fundamental principle called the Principle of Least Privilege. It says something simple: every user, system, or application should have access only to the resources needed to perform their function, and nothing more.
It sounds obvious. Yet the reality in most companies — especially small and medium-sized businesses — is completely different:
- The administrative employee has access to the HR folder with everyone’s salaries
- The junior developer has write permissions in production
- The salesperson can export the entire customer database to Excel
- The former employee who left six months ago still has an active account
This doesn’t happen out of carelessness or bad faith: it happens because no one reviewed it. In many organizations, permissions are assigned once and never touched again. The business grows, people change roles, systems are added, but permissions stay exactly as they were.
The Concrete Risks of Uncontrolled Access
Data Exfiltration
An employee with access to sensitive business information — customer databases, pricing, strategies — can take that data when leaving for a competitor or starting their own business. If permissions are excessive, they can do this without any system flagging it as an anomaly.
Former Employee Access
According to the Ponemon Institute, 20% of companies have experienced a security breach caused by a former employee whose credentials were never revoked. It’s one of the most common attack vectors and one of the easiest to prevent.
Amplified Human Error
An employee with limited permissions who makes a mistake — deletes the wrong file, falls for phishing, runs something they shouldn’t — causes contained damage. The same mistake made by someone with administrator permissions can be catastrophic.
Lateral Movement by External Attackers
When an external attacker obtains an employee’s credentials (via phishing, for example), excessive permissions allow them to move freely through the company’s systems. The more limited the permissions, the more contained the damage.
What a Good Access Control Model Looks Like
Implementing access control doesn’t mean locking everything down so no one can work. It means every person has exactly what they need, with the appropriate controls in place. These are the pillars:
1. Identity and Access Management (IAM)
An IAM system centralizes the management of identities and permissions for all users in the organization. It defines who can access what, under what conditions, and from where. Tools like Microsoft Entra ID (formerly Azure AD), Okta, or similar solutions allow this to be managed at scale.
2. Role-Based Access Control (RBAC)
Instead of assigning permissions individually to each person, roles are defined (salesperson, developer, accountant, administrator) with the corresponding permissions for each function. When someone joins or changes roles, the role is assigned or changed — no manual permission configuration needed.
3. Periodic Access Reviews
Regular audits — quarterly or semi-annual — where team leaders confirm what permissions each member of their team actually needs. Anything not confirmed is revoked.
4. Privileged Access Management (PAM)
For the most critical access — system administrators, databases, cloud infrastructure — PAM solutions add layers of control: enhanced authentication, session recording, time-limited access with approval workflows, and automatic alerts for unusual behavior.
5. Automated Offboarding
A clear, automated process to revoke all access when an employee leaves the company. This includes email accounts, internal systems, VPN, cloud services, and any tool with its own credentials.
Signs Your Company Has an Uncontrolled Access Problem
Review this list. If more than two points apply to your organization, it’s time to act:
- You don’t know exactly which systems each employee currently has access to
- Permissions are assigned manually, case by case, without defined roles
- When someone changes departments, no one reviews or adjusts their previous access
- Former employees take more than 24 hours to have their access revoked (or it’s never revoked)
- There are no logs of who accessed what information and when
- IT administrators use their elevated-privilege accounts for everyday tasks
- There is no formal process for periodic permission reviews
The Regulatory Framework That Is Starting to Require It
Access management is not just a best practice: in many contexts it is a legal or contractual requirement. Regulations such as ISO 27001, SOC 2, GDPR, HIPAA, and CCPA establish specific obligations about who can access what type of information and how that access must be controlled.
For companies working with clients in Europe, the United States, or regulated sectors (healthcare, finance, government), these requirements are already part of the commercial qualification process.
Having a documented and auditable access control model is not just security: it’s a competitive advantage.
Cybersecurity Tools That Help Control Access
There are specific solutions for different aspects of access control. Some of the most relevant for medium and large enterprises in Latin America:
For identity and access management (IAM): Microsoft Entra ID, Okta, OneLogin
For privileged access (PAM): CyberArk, BeyondTrust, Heimdal Security
For anomaly detection and behavior monitoring (UEBA): Varonis, Securonix, Exabeam
For endpoint security (controlling access from devices): Bitdefender, Kaspersky Endpoint Security, McAfee
At Aufiero Informática we are authorized distributors of leading cybersecurity solutions for Argentina and all of Latin America. We work with more than 90 global brands and can advise you on which tools best fit your company’s size, budget, and real needs — without over-engineering or underestimating the solution.
The Cost of Doing Nothing
The IBM Cost of a Data Breach Report 2024 estimates that the average cost of a data breach in Latin America exceeds $2.5 million dollars, factoring in data loss, recovery time, reputational damage, regulatory fines, and customer loss.
Breaches caused by insiders — malicious or negligent — are historically more expensive and slower to detect than those caused by external attackers, precisely because they use legitimate channels.
Against that figure, the cost of implementing a solid identity and permissions management system is marginal.
Conclusion
The uncontrolled access problem is not technological: it’s organizational. The tools exist, they’re mature and accessible. What most companies lack is the process: defining roles, reviewing permissions periodically, automating offboarding, and monitoring anomalous behavior.
The good news is that you don’t need to solve everything at once. A single concrete first step — mapping what access each employee has today — already changes an organization’s security posture.
If you want to understand how to improve access control in your company and which cybersecurity solutions fit your context, Aufiero Informática can help.
Talk to our cybersecurity team →
Has your company already implemented an access control model? Are you using PAM, IAM, or any other tool? Tell us in the comments.
