Has your company's documents been leaked? Learn what to do.

In the corporate environment, information protection is as strategic as financial control or new product development. When leaked documents, the consequences can be severe: financial losses, damage to reputation and sanctions provided for in the General Data Protection Law (LGPD).

An incident of this kind opens the door for fraud, identity theft, phishing scams and even corporate espionage. In Brazil, the LGPD establishes that companies must adopt security measures to protect information against unauthorized access, and may be held civilly and administratively liable if they fail to comply with these requirements.

This article presents an action plan for dealing with data breaches in your company, covering everything from identifying the source of the problem to legal and operational measures to mitigate damage. It also provides prevention guidelines to strengthen digital security and protect sensitive information.

What characterizes a document leak?

A leak of documents occurs when confidential information — such as contracts, customer data, financial records, or trade secrets—are exposed, accessed, or distributed without authorization. This exposure can occur in several ways:

• cyber attacks that exploit technical vulnerabilities;
• malicious action by internal or former employees;
• operational errors, such as sending documents to the wrong recipient;
• failures in physical or logical security measures.

Such incidents may involve anything from personal data (CPF, address, email) to strategic corporate documents, including digitally signed files.

In addition to the undue exposure of personal and business data, a leak can also compromise the trust of customers, suppliers and investorsThese documents often contain strategic information, such as contracts, financial records, and even employee data. When accessed by unauthorized parties, they open the door to manipulation, forgery, or even blackmail. 

An important point is that data leaks aren't always caused by criminal activity; human error, such as sending emails incorrectly or storing them improperly, is also a common source of incidents.

How to identify the source and impact of the leak

Know quickly where the exhibition started is essential to react assertively. Below are the main actions.

1. Internal systems verification – analyze access logs, file changes, and authentication records.
   
2. Checking with suppliers and partners – in environments with shared documents, assess whether there has been any compromise in the chain.
   
3. Identifying which data has been compromised – classify the affected information by sensitivity level (public, internal, restricted, confidential).
   
4. Date and extent of incident – knowing when the leak occurred helps to assess risks and prevent future occurrences.

Identifying the source of the problem is essential for defining containment strategies. Often, the breach may have originated on a vulnerable system, a business partner, or even on employees' personal devices. 

A detailed analysis of access logs, granted permissions, and recent activities helps understand the path taken by the data. Furthermore, assessing the impact involves measuring what information was exposed and how it could be misused, whether for financial fraud, identity theft, or the exposure of strategic company information.

In cases involving documents with electronic signature, it is important to check whether the cryptographic keys or the integrity of the files have been compromised.

What to do after a document is leaked?

Now, let's look at the seven steps you should follow if a leak occurs in your company.

1. Validate the authenticity of communications

When news of leaks arises, it's common for fake messages to appear, simulating official communications. These actions, known as Phishing, aim to exploit the moment of vulnerability to obtain more information or carry out scams.

To confirm the veracity of notices and requests:

• consult the company's official channels (website, verified social networks, customer service);
• compare the received email domain with the official domain;
• analyze spelling errors or unusual data requests.

Remember: serious companies never ask for passwords or codes by emailThis care is essential to avoid increasing the impact of the incident.

After all, during security crises, it's common for criminals to take advantage of the situation to send fake messages pretending to be official alerts. Validating the authenticity of communications is, therefore, a strategic step to avoid exacerbating the problem. This involves checking whether the alerts were actually issued through official company channels, checking technical details such as the email domain, and checking for formatting errors. 

Also consider training employees to identify phishing attempts, increasing organizational resilience, and reducing the risk of further breaches.

2. Change credentials and adopt two-factor authentication

If there is any indication that credentials have been exposed, change passwords immediately of all corporate services.

Best practices for resetting:

• create unique, long combinations with special characters;
• do not repeat the same password on different platforms;
• review user permissions and revoke unnecessary access;
• reset credentials after a security incident. 

Additionally, activate the two-factor authentication (2FA) whenever possible. This measure adds an extra layer of security, requiring, for example, a temporary code sent to the cell phone or a biometric data.

3. Request removal of information from search engines

If sensitive data has been indexed by search engines like Google, it is possible request the deletion of these resultsThis doesn't delete the original content, but it significantly reduces its exposure.

This action is important because it prevents third parties from easily accessing confidential informationas the business contracts or customer identification data.

When sensitive data appears on pages indexed by search engines, the risk of exposure increases exponentially. Requesting the removal of this information from search engines is a preventative measure that limits public access and reduces the possibility of exploitation by third parties. 

This process can be completed through specific forms provided by companies like Google. While it doesn't remove the content at its source, it helps restrict visibility, serving as an additional layer of protection until broader measures are adopted.

4. File a police report

O police report (BO), which can be done online, is essential to formalize the incident and record that the company is taking action.

In the police report, include:

• approximate date and time of the leak;
• types of data exposed;
• evidence collected (prints, emails, system logs).

It's worth remembering that the police report is more than a formal record: it's a document that provides legal support and facilitates future legal action. It can be used to demonstrate to authorities and financial institutions that the company is taking appropriate action in response to the incident. 

Many security departments allow you to file a police report online, simplifying the process. This registration also aids cybercrime investigations, allowing authorities to track those responsible and strengthen accountability in proven fraud cases.

5. Communicate with financial institutions

If the leaked information includes bank details, card numbers or debit authorizations, it is necessary notify the banks immediately and card administrators.

This allows them to implement enhanced monitoring or preemptively block suspicious transactions. In some cases, it may be necessary to issue new cards or access credentials.

6. Monitor transactions and activities

After an incident, continuous monitoring is essential. This involves:

• monitor the company's financial movements;
• check system logs and access attempts;
• use tools digital signature validation to confirm the integrity of documents.

This precaution prevents an initial attack from turning into a recurring problem. Notifying banks and card issuers immediately after a breach is crucial to reducing the risk of suspicious transactions. 

This communication should include details about the compromised data, such as social security numbers or corporate account information. In response, institutions can take preventative measures, such as increased monitoring, temporarily blocking cards, or requesting new access credentials. 

Such care is essential because criminals often act quickly, taking advantage of loopholes to make transfers, request loans, or make improper purchases in the company's name.

7. Consult specialized legal advice

Legal support must assess whether there has been a violation of the LGPD and provide guidance on:

• formal notification to the ANPD;
• right to compensation for material or moral damages;
• procedures for communicating to affected data subjects.

After an incident, closely monitoring financial transactions and digital access becomes essential. Monitoring should include internal systems, bank accounts, corporate cards, and even platforms used by employees. Early identification of suspicious activity, such as logging in at unusual times or unrecognized transactions, allows for quick action to block fraud attempts. 

Security auditing and reporting tools can be valuable allies, providing real-time alerts. This constant monitoring reduces impacts and prevents new attacks from worsening existing damage.

Companies that adopt digital signature with certificate ICP-Brazil have more legal certainty in cases of dispute over document authenticity.

Best practices to prevent new incidents

Prevention is the most effective way to deal with leaked documents. It is recommended:

• access control: apply the principle of least privilege, ensuring that each employee only accesses what is necessary;
• information security policies: formalize procedures for the use, storage and disposal of data;
• periodic trainings: train teams to identify phishing attempts and apply security measures;
• secure electronic signature: to protect the integrity of contracts;
• regular backups: stored in a secure and encrypted location.

Tools that can help

There are solutions on the market that add layers of security to document management. These include:

• platforms electronic document management with permission control;
• systems digital signature integrated with ICP-Brasil certification;
• solutions with advanced encryption e transaction log for audit.

The choice must consider cost-benefit, usability and compliance with legal requirements.

So, have leaked documents This is a situation that requires a swift, organized, and legally sound response. From identifying the source of the problem to communicating with authorities and data subjects, each step influences the company's ability to mitigate harm and maintain market trust.

Prevention, internal incident response protocols and use of secure technologies, such as reliable electronic signature, are pillars to protect critical information.

If your company wants to combine security, cost reduction and ease of use, Meet ZapSign and discover how to simplify subscription processes with technology that adapts to your needs.