ERP Security: How to protect systems against cyberattacks

The silent enemy: why your ERP security can't depend on luck

Cybersecurity has become a priority in technology investment decisions. The rise in digital attacks, the exposure of sensitive data, and the financial impact of incidents have placed protecting operations at the center of companies' concerns [Época Negócios/IBSEC Survey].

Among the threats, ransomware deserves special attention. This type of attack can block access to systems and files, disrupt critical processes, and require significant recovery efforts.

At the same time, user behavior remains a point of concern. According to the Voice of the CISO report, 72% of Brazilian security leaders point to employee behavior as one of the main cybersecurity vulnerabilities in their operations [Voice of the CISO Report].

A click on a malicious link, a compromised password, or the improper sharing of information can pave the way for incidents with consequences that extend far beyond the IT area.

For companies that rely on management systems, the question is straightforward: how to protect the ERP and keep operations available even in the face of increasingly sophisticated threats?

Why is ERP security strategic for the business?

ERP systems centralize information and processes that are crucial to a company's operation, such as financial data, purchasing, inventory, billing, and resource management.

When this system becomes unavailable, the impacts can affect different areas simultaneously. Orders stop being processed, operations can be interrupted, and decisions become dependent on incomplete or outdated information.

In manufacturing, for example, downtime can compromise production planning. In retail, it can affect inventory control, sales, and revenue.

Therefore, protecting the ERP system means more than just preventing attacks. It also involves preserving operational continuity, data integrity, and the company's ability to recover.

Read also: Cybersecurity Checklist 2026: 12 actions to protect your company

What are the main risks to corporate systems?

Among the risks that deserve attention are:

• Compromised credentials: stolen or reused passwords can allow unauthorized access.
• Phishing: fraudulent messages can trick employees into sharing information or performing malicious actions.
• Ransomware attacks can lock down systems, encrypt files, and disrupt activities.
• Inappropriate access: excessive permissions increase the exposure of sensitive information.
• Lack of monitoring: suspicious activities may go unnoticed until the incident causes significant impacts.

These risks demonstrate why safety cannot depend solely on employee attention or isolated tools.

Why aren't antivirus and firewalls enough?

Antivirus software and firewalls remain important components of digital protection. However, they are part of a broader strategy and do not eliminate all risks.

Corporate environments involve different systems, devices, users, and connections. To identify threats that permeate these environments, it is necessary to correlate events, track behaviors, and investigate signs of suspicious activity.

It is in this context that security monitoring services and SIEM technologies come into play.

The role of SIEM in threat identification

SIEM, short for Security Information and Event Management, centralizes and correlates records of security events from different sources.

By bringing this information together, the technology helps to identify patterns that might go unnoticed when each system is analyzed separately.

Imagine a corporate account that makes an unusual series of accesses during the early morning hours, from an unexpected location or device. The correlation of these events can help identify a possible intrusion attempt and guide the investigation.

Effectiveness depends on the monitored sources, the detection rules, the environment configuration, and the response procedures adopted.

SOC: Continuous monitoring to strengthen corporate security

The SOC (Security Operations Center) is the Security Operations Center responsible for monitoring events, investigating alerts, and supporting incident identification and response.

Combined with SIEM, SOC allows for the organization of continuous security monitoring, with processes and professionals trained to analyze suspicious behavior.

In practice, this approach helps the company reduce the time between identifying a threat and initiating response actions.

You may also be interested in: WAF, EDR and SOC/SIEM: understand the layers of protection every company should have.

How does 24-hour monitoring work?

In a continuous monitoring service, security events are tracked according to the contracted scope and the policies defined for the environment.

When suspicious activity is identified, it may go through stages such as:

1. Detection: identifying an event or behavior that is outside the norm.
2. Analysis: assessment of the context and severity of the alert.
3. Investigation: verification of possible evidence of compromise.
4. Response: activation of the procedures foreseen to contain or deal with the incident.
5. Follow-up: recording and monitoring the incident to support the prevention of future events.

An effective response depends on agreed-upon procedures, operational permissions, and integration between the security service and the team responsible for the environment.

The human factor also needs to be part of the strategy

Technology is an important part of defense, but the preparedness of employees also influences their exposure to risks.

Phishing training and simulations help demonstrate how attacks can occur and allow for the assessment of the ability to recognize suspicious messages.

When performed regularly, these exercises can guide awareness campaigns that are more aligned with the organization's needs.

The combination of monitoring, access controls, response processes, and user training contributes to a more consistent security posture.

Cybersecurity as a competitive advantage

Security also influences a company's ability to acquire and retain customers, meet contractual requirements, and demonstrate responsibility in handling information.

Internal data from Skyone indicates that 76% of IT decision-makers consider security, compliance, and compliance to be extremely important attributes when evaluating suppliers. This scenario reinforces the importance of treating cybersecurity as part of the business strategy, and not just as an operational expense.

By protecting critical systems, reducing exposure to incidents, and structuring response processes, the company creates more favorable conditions for predictable growth.

How can you strengthen the protection of your operation?

A consistent strategy begins with mapping critical assets, reviewing access, and assessing the risks associated with the systems used by the company.

It is also important to verify that there are adequate mechanisms in place for monitoring, event logging, incident response, data recovery, and employee awareness.

Protecting an ERP system requires a continuous approach, capable of keeping pace with changes in infrastructure and digital threats.

Looking to strengthen the security of your corporate systems? Discover cybersecurity solutions and learn how specialized monitoring can support the protection and continuity of your operations.

Written by Skyone