E-commerce is one of the fastest growing sectors of the economy, but its foundation is extremely fragile. It is based entirely on trust. Every day, millions of customers entrust online stores with their most valuable data: payment card numbers, addresses, personal information. They do so in the belief that this information will be safe. It only takes one high-profile security incident, one data leak, for this trust, built up over years, to lie in ruins, and with it - the entire reputation and future of the business.
That’s why e-commerce stores, regardless of their size, are one of the most lucrative and most frequently attacked targets in cyberspace. For cybercriminals, an e-commerce platform is a treasure trove ready to be plundered. In the competitive world of online commerce, where customers have thousands of alternatives to choose from, cyber security is no longer a technical detail or cost that can be optimized. It has become an absolute foundation of credibility, a key element in building loyalty and one of the most important investments in a brand’s long-term success.
Shortcuts
- Why are online stores such an attractive target for cybercriminals?
- What are the most dangerous and common attack vectors against e-commerce platforms?
- What are magecart (online skimming) attacks and how do they steal payment card data?
- How do attackers take over customer accounts (account takeover) and how do you protect yourself from this?
- What is the importance of PCI DSS compliance for any online store?
- How does nFlo help online stores build comprehensive security?
Why are online stores such an attractive target for cybercriminals?
E-commerce platforms are on the target of hackers for several key reasons that make them ideal targets: high value and relatively easy to attack.
Direct access to payment data: This is the main motivation. Online stores are where credit card data is entered and processed. For criminals, the ability to capture this data “on the fly” or steal it from a database is a simple route to immediate monetization on the black market.
Huge personal databases: In addition to payment data, stores collect huge amounts of customers’ personal information: names, addresses, phone numbers, purchase histories. This data is a valuable commodity that can be used for identity theft, targeted phishing attacks and other scams.
Technological complexity and a large attack surface: A modern e-commerce platform is a complex ecosystem, consisting of the store platform itself (e.g. Magento, WooCommerce, PrestaShop), dozens of plug-ins and third-party integrations (payment systems, courier companies, marketing tools). Each of these elements is a potential attack vector, and keeping them all updated and secure is a huge challenge.
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What are the most dangerous and common attack vectors against e-commerce platforms?
The e-commerce threat landscape is very diverse, but several types of attacks are particularly common and destructive.
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Web application attacks (according to OWASP Top 10): Vulnerabilities such as SQL Injection, Cross-Site Scripting (XSS) or access control flaws can allow an attacker to take control of a store, steal an entire database or modify product prices.
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Online skimming (Magecart attacks): One of the most dangerous e-commerce-specific attacks, which involves injecting malicious JavaScript code into a payment page to steal card data in real time.
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Account takeover (ATO): Attackers, using leaked passwords, take control of customer accounts to place fraudulent orders, steal loyalty points or personal information.
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Distributed Denial of Service (DDoS) attacks: Massive attacks designed to overload a store’s servers and shut it down, leading to direct financial and reputational damage. Often combined with an attempt to extort a ransom.
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Transaction Fraud (Fraud): Using stolen credit cards to place orders, which generates costs for the store in the form of so-called “chargebacks.”
What are magecart (online skimming) attacks and how do they steal payment card data?
Magecart attacks, also known as e-skimming or online skimming, are one of the most insidious and damaging forms of attack targeting online stores. Named after one of the first groups to popularize the technique, it works as the digital equivalent of a physical skimmer installed on an ATM machine.
The attack starts with the hacker finding a vulnerability in the e-commerce platform (e.g. in an unpatched plugin) that allows him to inject a few lines of malicious JavaScript code into the store’s source code. Crucially, this code is injected most often into the shopping cart or order finalization (checkout) page - that is, exactly where the customer enters their personal and payment card information.
When the customer enters his card number, its expiration date and CVV code in the form, a malicious script, running in the background in his browser, captures this data in real time and silently sends it to a server controlled by the attackers. From the perspective of the customer and the store owner, everything looks normal - the payment goes through successfully. But at the same moment, the card data is stolen. Detecting such an attack is extremely difficult, because it leaves no traces in the server logs, and the malicious code can be perfectly hidden.
How do attackers take over customer accounts (account takeover) and how do you protect yourself from this?
Account takeover (ATO) is an attack in which a cybercriminal gains unauthorized access to a legitimate user’s account. In e-commerce, the goal is to use the account’s stored data (often including payment card details) to place fraudulent orders, steal loyalty points or obtain personal information for further attacks.
The most common method of ATO is so-called credential stuffing. Attackers use huge databases of logins and passwords leaked from other sites, and use automated bots to try to log in with the same credentials in your store. Since many users use the same passwords in many places, this method is extremely effective.
Defense against ATO requires a multi-layered approach:
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User education: Customers should be actively encouraged to use unique, strong passwords.
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Implement multi-factor authentication (MFA): Offering customers the ability to secure their accounts with a second layer (such as a code from an app or SMS) is an absolute necessity today.
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Monitor suspicious logins: Implement systems that can detect and block mass automated login attempts from unusual locations.
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Anomaly detection: Anti-fraud systems should analyze login behavior, alerting you, for example, if you suddenly change your delivery address and try to place a large order.
Key threats to e-commerce and key defense mechanisms
| Threat | How does it work? | A key method of protection |
|---|---|---|
| Skimming online (Magecart) | Malicious JavaScript code on the payment page captures card data in real time. | Regular vulnerability scanning, WAF with XSS protection, file integrity monitoring, PCI DSS compliance. |
| Account takeover (ATO) | Attackers use stolen passwords (credential stuffing) to log into customer accounts. | Implementation of multi-factor authentication (MFA), monitoring of login attempts, anti-fraud systems. |
| Attacks on the application (according to OWASP) | Exploiting vulnerabilities, such as SQL Injection or XSS, to steal data or take control of the store. | Secure Software Development Cycle (SSDLC), Web Application Firewall (WAF), regular penetration testing. |
| DDoS attacks | Overloading the store’s servers to disable it and/or extort ransomware. | Use DDoS protection services (provided by hosting or specialized companies, such as Cloudflare). |
What is the importance of PCI DSS compliance for any online store?
PCI DSS (Payment Card Industry Data Security Standard) is a global security standard that is mandatory for any company that accepts card payments. Its purpose is to protect cardholder data. Even if you use a third-party payment provider (like Stripe, PayU) and your card data never touches your servers, you still have some responsibility for ensuring the security of the transaction (such as securing the page where the payment form is located).
PCI DSS compliance is not just a formal requirement - it’s a ready-made, battle-tested recipe for implementing fundamental security features in an online store. The standard’s requirements, such as the need for a firewall, the use of strong encryption, regular vulnerability scanning, access management and log monitoring, directly address most of the most common e-commerce attack vectors.
Version 4.0 of the standard introduces additional requirements that are extremely important for e-commerce, such as the obligation to manage all JavaScript on payment pages, a direct response to the threat of Magecart attacks. Treating PCI DSS compliance as a roadmap for building security is one of the smartest investments a store owner can make.
How does nFlo help online stores build comprehensive security?
At nFlo, we have experience in securing e-commerce platforms, from small stores based on popular engines to large, dedicated B2B and B2C platforms. We understand the unique challenges of this industry and know that security must go hand in hand with performance and a positive customer experience.
Our key service is specialized penetration testing of e-commerce platforms. Our team of ethical hackers simulates real-world attack scenarios, looking for vulnerabilities from the OWASP Top 10 list, flaws in business logic (e.g., the possibility of price manipulation), and verifying resistance to Magecart or account takeover attacks. We provide a detailed report with specific, implementable recommendations.
We support our customers in achieving and maintaining compliance with the PCI DSS standard by conducting readiness audits and helping to implement the required technical and procedural controls. We also offer deployment and management services for application firewalls (WAFs), which provide real-time protection against the most common attacks on web applications. In the event of a suspected intrusion, our Incident Response team is ready to act immediately to stop the attack, analyze its source and safely restore store operations, minimizing financial and image damage.
Related Terms
Learn key terms related to this article in our cybersecurity glossary:
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- Cybersecurity Incident Management — Cybersecurity incident management is the process of identifying, analyzing,…
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- Firewall — A firewall, also known as a network firewall or security barrier, is a security…
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