Black Friday: How to protect data and boost business cybersecurity

Black Friday is one of the main dates for retail, but it also increases the risks of cyber attacks. Learn how to protect your business and avoid losses!

In the second half of the year, one of the most anticipated events for various companies is the Black Friday. This event represents great opportunities and has already established itself as one of the main dates in the national retail calendar, generating billions of reais in sales.

In fact, according to the Exame Business column, in 2024, the total revenue during the promotional days was R$ 5.97 billion.

However, due to the increase in traffic and online transactions, Black Friday is also considered one of the most critical periods for cyberattacks. According to the G1 portal, in the 2024 edition, approximately 18 thousand fraud attempts were recorded, which could have resulted in losses of R$ 27.6 million if they had not been identified and blocked in time.

Therefore, it is essential to prioritize your company's security, preventing incidents and avoiding financial losses and damage to reputation. Understand how!

Main Risks on Black Friday

Companies and consumers often do not realize the risks they are exposed to during Black Friday. Some of these risks include:

Data Leakage

During this period, data traffic between companies and consumers increases—including sensitive information such as CPF, address, credit card, and login. Without adequate protection, this data can be intercepted by cybercriminals and sold on the dark web.

Ransomware Attacks

Ransomware is a type of malware that seizes a company's data or systems and demands payment to restore access. Companies that rely on online sales are especially vulnerable at this time, and any minute of instability can lead to significant losses.

System Downtime

During Black Friday, traffic on websites increases, and not all access is legitimate. Downtime occurs when systems go offline, preventing real users from accessing services.

A common example is the DDoS attack, which overloads servers with false access, causing loss of sales and customer frustration.

Payment Fraud

Scams such as card cloning, fake payment links, and Pix fraud are common during this period. Criminals create fake pages or intercept transactions to divert funds.

Website Forgery

Criminals take advantage of this period to create fake websites that mimic well-known stores and deceive consumers. This practice, known as phishing, aims to steal personal and financial data or induce payments on fraudulent pages, causing direct losses and affecting the reputation of legitimate brands.

To avoid such scenarios on Black Friday, it is essential for companies to adopt good security practices. Check out some of them!

Best Practices to Protect Data and Transactions

• End-to-end encryption;

• Strong authentication (MFA and Passwordless) for internal access;

• Implementation of Zero Trust;

• Continuous monitoring and incident response with SOC/NOC;

• Protection against phishing and social engineering for teams and clients;

• Regular updates to systems;

• Secure and frequent backups;

• Continuous training for employees;

• Clear and defined damage containment policies in case of attacks.

In addition to good practices, investing in cloud infrastructure is an effective way to reinforce digital security. The cloud offers scalability, high availability, advanced encryption, and continuous monitoring, essential resources for dealing with peaks in high demand and preventing attacks.

Having a specialized partner, such as Teltec Data, is crucial to ensure that your infrastructure is prepared not only for Black Friday but also to prevent and face critical moments. With expertise in cloud solutions and cybersecurity, Teltec Data provides support to protect data, maintain system availability, and ensure business continuity.

How is your company preparing for Black Friday? Talk to our specialists and find out how we can further enhance your cybersecurity!