
Why is B2B Ecommerce Security Important?
Laura
Buzin

As more B2B businesses embrace ecommerce, the risks of doing business online continue to grow just as fast as the opportunities.
Malicious actors aren’t just targeting the big names anymore; they’re zeroing in on small and mid-size businesses (SMBs), especially those sitting on valuable customer and transaction data. In fact, ITRC’s 2024 Consumer & Business Impact Report shows that 81% of small businesses have been victims of a security breach, data breach, or both.
That’s why you can’t afford to treat ecommerce security as a second thought. It’s a fundamental part of building a trusted, resilient, and profitable online business.
In this guide, we’ll break down what B2B ecommerce security means, why it matters for your business, the most common threats to watch out for, and what you can do to safeguard your online store.
The Basics of B2B Ecommerce Security
B2B ecommerce security refers to the actions B2B businesses take to keep their online transactions and customer data confidential, integral, and authentic.
Key aspects of B2B ecommerce website security often include:
- Privacy/confidentiality: Ensuring customer and business data is kept safe from unauthorized access.
- Integrity: Preventing attackers from altering information — like changing prices or account balances — and avoiding mistakes caused by manual data handling.
- Authentication: Verifying that users are who they claim to be and that your website is legitimate.
- Non-repudiation: Providing proof of transactions so that no party can later deny it. Digital signatures and detailed transaction logs ensure that when an order or payment is made, both the buyer and seller have evidence of the exchange.
Why is Security Important in Ecommerce?
Ecommerce security is important for B2B businesses because it keeps customer data safe, prevents financial loss, helps you stay compliant, and builds trust with clients. Let’s look at each of these benefits in detail:
Protecting Your Bottom Line
A single breach can cost your business tremendously. IBM reports that the average cost of a data breach reached $4.88 million in 2024. Whether it’s direct financial theft or the cost of remediation, cyber attacks put your revenue and even company survival at risk.
Maintaining Customer Trust and Loyalty
Your customers trust you with their sensitive information. If that trust is broken, they may take their business elsewhere.
Research by Vercara shows that 75% of consumers would stop purchasing from a brand after a cybersecurity incident, and B2B buyers are no different. In fact, trust is particularly hard to recover in B2B relationships, where long-term contracts and reputations are on the line.
Avoiding Legal and Compliance Issues
B2B ecommerce businesses handle large volumes of personal and payment data, especially when dealing with recurring invoices or purchase orders. That comes with serious regulatory obligations.
Companies must comply with standards like the Payment Card Industry Data Security Standard (PCI DSS) for credit card details and possibly privacy laws for customer data. Failure to do so can result in hefty fines and legal liabilities.
Ensuring Business Continuity
Cyberattacks can disrupt your operations. For instance, a Distributed Denial-of-Service (DDoS) attack could crash your ecommerce business for hours or days, resulting in lost sales and frustrated clients.
Depending on your software setup, a security incident might even halt your fulfillment or production workflows, disrupting entire supply chains and damaging your business reputation.
Common Security Threats for B2B Ecommerce
Here are some of the most common security threats B2B ecommerce businesses face:
Financial Fraud and Payment Scams
This includes credit card schemes like “carding” (testing stolen card numbers at your checkout).
Fraudsters often try to use stolen credit cards to place orders, leading to chargebacks that cost you money. They may also attempt fake refund requests or abuse promotional codes meant for legitimate business clients.
For B2B companies processing high-value orders, even a few successful fraud attempts can be devastating. Not to mention the financial toll investigating and disputing these fraudulent claims can have on your business.
Phishing Attacks
Phishing involves tricking people into divulging confidential information (like passwords and credit card numbers) by posing as a trustworthy entity.
For example, an attacker might send your customers an email that looks like it’s from your company, asking them to “verify their account” on a fake login page that records their password. Or, a scammer could target your employees with a fake ERP login alert to steal their credentials.
Compromised accounts on both ends (business owners and customers) can have devastating consequences, including:
- Unauthorized orders
- Loss of sensitive data or client information
- Damaged reputation (e.g., when clients receive emails that seem to be from your company but aren’t)
Malware and E-skimming
Malware is malicious software that can infect your website or the devices of people using your website.
One especially nasty tactic is e-skimming. Malicious hackers inject malware into your site that lurks on checkout pages and captures payment data in real time as customers enter it.
This can result in:
- Stolen customer payment data that creates liability and compliance issues
- Mandatory breach notifications and potential regulatory fines
- Website downtime while cleaning infected systems
SQL Injections and Cross-Site Scripting (XSS)
These are types of web application attacks in which malicious actors manipulate your website’s code to gain access or cause damage.
In an SQL injection, an attacker inserts malicious SQL queries via form fields or URLs, potentially retrieving or tampering with data in your database (like customer information or order records).
Cross-site scripting (XSS) involves injecting malicious code into webpages that executes in users’ browsers, potentially compromising their data on the website.
B2B relationships are built on trust and reliability. If your customers’ data is compromised through SQL injections, XSS attacks, or data breaches, you risk losing not just individual accounts but entire corporate partnerships.
Distributed Denial-of-Service (DDoS) Attacks
In a DDoS attack, cybercriminals flood your website with an overwhelming amount of traffic (often via networks of infected computers called botnets). The goal is to crash your site or slow it to a crawl, making it impossible for real customers to access it.
Attackers sometimes use DDoS as a smokescreen while attempting other intrusions or for extortion (demanding money to stop the attack).
This downtime can damage long-term relationships and contracts for B2B companies where clients depend on your services for their operations.
Brute Force and Credential Stuffing
Brute force means systematically guessing usernames or passwords (often using automated scripts) until the attacker gets in.
Credential stuffing is when attackers take leaked username or password combinations from other breaches and try them on your site, betting that some people reuse their passwords.
In addition to dealing with potential unauthorized access to high-value business accounts, credential stuffing and brute force attacks can overwhelm your authentication systems and customer support teams.
When legitimate business users can’t access their accounts or receive support, it disrupts their procurement processes and creates friction in the buying experience.
Man-in-the-Middle (MITM) Attacks
In a MITM attack, someone intercepts the communication between a user and your website, eavesdropping or even altering the data in transit. This could happen if a customer is on an insecure Wi-Fi network or your site doesn’t enforce HTTPS.
For B2B ecommerce businesses, this can result in:
- Intercepted sensitive business communications and pricing data
- Compromised customer login credentials
- Loss of competitive advantage if proprietary information is stolen
Insider Threats
Not all threats come from the outside. Employees, contractors, or partners with access to your systems can also pose risks.
Sometimes it’s malicious; an unhappy employee might steal data or sabotage systems. Other times, it’s accidental, like an employee clicking a phishing link or misconfiguring something in a way that creates a security gap.
This is a stand-out issue in B2B businesses since employees often have access to sensitive customer data, pricing information, and business intelligence that competitors would find valuable.
To prevent this, implement good internal policies and the principle of least privilege (give each user the minimum access necessary to perform their role).
How to Secure Your B2B Ecommerce Store from Cyber Attacks
While cybersecurity threats can be intimidating, there are proven strategies to improve your ecommerce security. Here are some of them:
1. Choose a Secure, ERP-Integrated Ecommerce Platform
Look for solutions that offer PCI-compliant hosting, encryption, and robust access controls out of the box.
k-ecommerce’s ERP-integrated ecommerce solution has an extensive range of security features built in to keep your B2B ecommerce store safe. It provides enterprise-grade hosting in a PCI DSS Level 1 certified environment, so your site and payment data are hosted with the highest security standards.
It also eliminates many risky third-party plugins by offering embedded payment gateways, shipping calculators, and tax services natively. This all-in-one approach means fewer weak points for attackers to target.
2. Use a PCI-Compliant Payment Solution
Digital payments are the lifeblood of B2B ecommerce, but also one of the biggest targets for attackers. Use a payment gateway or integrated payment solution that is already PCI Level 1 certified and handles the heavy lifting of security.
For instance, k-ecommerce’s ERP-integrated payment solution (KIP) processes transactions in a PCI Level 1 certified cloud environment, meaning it adheres to the highest security standards for payment data.
3. Use Strong Authentication and Access Controls
Multi-factor authentication (MFA) should be enabled wherever possible for your admin or back-end accounts and offered to clients for their accounts. MFA adds an extra verification step (like an SMS code or authenticator app) on top of passwords, making it much harder for attackers to misuse stolen passwords.
In addition, ensure all user passwords are long and complex. Implement account lockout policies to thwart brute force attacks (e.g., lock an account after five failed login attempts, requiring manual reset).
Within your admin dashboard or ERP, use role-based access control. By limiting privileges, you minimize damage if one account is compromised.
4. Keep Software Up to Date and Perform Regular Patches
Many attacks (like SQL injection or malware exploits) prey on software vulnerabilities that have already been discovered and fixed in newer updates.
To close those gaps, you need to keep your systems updated. This includes your B2B ecommerce platform, CMS, plugins, ERP connectors, server operating systems, and other software in your stack.
Also, enable automatic updates where possible. Otherwise, set a frequent schedule (e.g., weekly) to check for patches and apply them.
5. Secure Your Website Connection (SSL) and Network
Always use HTTPS for your website as it encrypts data in transit, and also because modern browsers actively flag websites without it as “Not Secure”.
Beyond that, consider using a content delivery network (CDN) or security service that provides a Web Application Firewall and DDoS mitigation. These services filter out malicious traffic and absorb large traffic floods in a DDoS attack, keeping your website responsive.
6. Implement Monitoring and Incident Response Plans
Set up security monitoring on your website. This could be as simple as using activity logging and reviewing those logs for strange or suspicious activity, or as advanced as real-time intrusion detection systems.
Equally important, have an incident response plan. Know what to do if a breach or attack is detected. This can include steps like:
- Isolating the affected systems
- Bringing in an IT/security team (or external experts)
- Contacting any required authorities or regulators (especially if customer data is compromised)
- Informing customers if necessary
7. Educate Your Team and Customers
Conduct training for your staff about common threats. Teach them how to recognize phishing emails or suspicious links, how to use secure passwords, and the importance of following security protocols.
For customers, provide gentle guidance too. For example, you might include a note about good security hygiene in transactional emails or on your login page (e.g., “Always use a strong password” or “We will never ask for your password via email”).
Internally, make sure your IT team stays up to date on the latest security patches, cybersecurity news, and best practices.
Final Thoughts: B2B Ecommerce Security for Online Businesses
B2B ecommerce has opened tremendous opportunities for SMBs to expand their reach and grow their revenue. But with the grand frontier comes the responsibility to protect your business and customers from cyber threats.
By leveraging the right tools and best practices, you can significantly bolster your ecommerce security.
k-ecommerce’s ERP-integrated ecommerce solution and ERP-integrated payment portal are designed with security in mind at every level. The platform offers PCI Level 1 certified hosting and payment processing, and AVS/CV2 for credit card validation to protect you from fraud and other cyber threats.
Contact us today to learn how we can help secure your B2B ecommerce business and fuel your growth.