Strip away the product photography and the brand voice, and every design choice in an online store exists to do one thing: convince a stranger they can trust you with their money and their personal data before they ever receive anything in return. That trust is fragile, and a single breach can end it permanently. So before you build, it is worth understanding exactly what each major hosted platform does to protect transactions and customer data — and, just as important, where the real security risk actually lives (spoiler: it is rarely the platform itself).
BigCommerce, Volusion, and Shopify are all established hosted platforms, and the honest headline is that all three provide a strong, comparable security baseline. None of them is the weak link in a typical store. Here is what that baseline includes and how to think about the differences.
The shared baseline
- PCI DSS Level 1 compliance. This is the highest tier of the Payment Card Industry Data Security Standard, required of providers handling large transaction volumes. On a hosted platform, the vendor carries the heavy compliance burden — you inherit a compliant payment environment instead of building and auditing one yourself. (Note: an earlier version of this article referenced now-outdated specifics like a particular CDN vendor; the relevant point is durable — all three operate at PCI Level 1 and front the storefront with a content delivery network.)
- TLS/SSL everywhere. Modern stores serve every page over HTTPS, not just checkout. This encrypts data in transit and is also a baseline expectation for both shoppers and search engines.
- Managed infrastructure and patching. The vendor owns server hardening, vulnerability patching, automatic backups, and DDoS mitigation at the network edge — the unglamorous work that self-hosted stores routinely fall behind on.
- Access controls. Each platform offers staff roles and permissions; modern versions add two-factor authentication, which is the single highest-value control you can actually turn on yourself.
The practical takeaway: choosing between these three on security grounds alone is splitting hairs. The decision should be driven by features, ecosystem, and fit — security is table stakes all three meet.
Hosted versus self-hosted: where the real gap is
The meaningful security difference is not BigCommerce vs. Shopify vs. Volusion — it is hosted (SaaS) versus self-hosted/open-source. On a hosted platform, a vendor security team patches the platform for every store the moment a vulnerability is found, and there is someone to call when something goes wrong. On a self-hosted platform such as WooCommerce, OpenCart, or Adobe Commerce / Magento Open Source (the editions formerly called Magento Enterprise and Community before Adobe's 2018 acquisition; note the old "Enterprise/Community" naming in legacy articles is obsolete), security is your responsibility. The code and file structure are publicly known, which is fine — security through obscurity was never real security — but it means a known vulnerability is a known vulnerability for attackers too, and the only thing protecting you is how fast you patch.
Self-hosted is not inherently insecure; large, well-run stores operate safely on open-source platforms every day. But it is conditionally secure: it requires a developer or agency that reliably applies patches within days of release, hardens the server, manages backups, and monitors for intrusion. If that capacity does not exist, a hosted platform's managed security is not a limitation — it is the feature that prevents the breach you would otherwise eventually suffer.
The risk the platform cannot cover for you
Here is the part most platform-comparison articles omit: the majority of real-world store compromises do not exploit the platform's core code at all. They exploit the merchant. The common vectors are weak or reused admin passwords, no two-factor authentication, over-permissioned staff accounts that are never revoked, a vulnerable third-party app or theme you installed, and phishing that hands an attacker a valid login. PCI Level 1 infrastructure does nothing against an admin who reuses their password and gets phished. Your security checklist, on any platform, should be:
- Enforce two-factor authentication for every admin and staff account, without exception.
- Use unique, strong, password-manager-generated credentials — never reused.
- Apply least privilege: give each staff member only the access their role needs, and revoke access the day someone leaves.
- Vet third-party apps and themes; uninstall anything unused. Every add-on is attack surface you chose to add.
- On self-hosted platforms, define who owns patching and hold them to a documented cadence.
What "a security incident" actually costs
It is easy to treat platform security as abstract until you price the failure. A breach that exposes customer payment or personal data is not a one-line cleanup — it triggers, in rough order, emergency investigation and containment, notification obligations to affected customers and possibly regulators under laws like GDPR or state breach-notification statutes, potential card-brand penalties if PCI obligations were not met, and the slow, expensive erosion of customer trust that is the hardest cost to recover. For most small and mid-size stores, the reputational damage outlasts the technical and legal cost by years. This is the real reason the hosted-vs-self-hosted distinction matters more than the BigCommerce-vs-Shopify-vs-Volusion one: a hosted platform absorbs the categories of risk most likely to cause a catastrophic, public failure, while the residual risk it cannot absorb (your credentials, your staff, your add-ons) is exactly the part you can control cheaply with the checklist above. Security is not a feature you buy once; it is an operating posture you maintain — the platform handles the floor, you are responsible for not leaving the front door unlocked.
Frequently asked questions
Is one of the three platforms meaningfully more secure than the others? No. All three operate at PCI DSS Level 1 with managed infrastructure and a strong baseline. Decide on features and fit; treat security as a requirement all three satisfy.
Does PCI compliance mean my store cannot be hacked? No. It means the payment environment meets a standard. The most common breaches target merchant credentials and third-party add-ons, which compliance does not cover — that part is on you.
Is open source too risky for a small store? Not inherently, but only if someone reliably owns patching and hardening. Without that ownership, a managed hosted platform is the safer honest choice.
What is the single highest-impact thing I can do? Turn on two-factor authentication for every admin account today. It defeats the most common real-world attack at zero cost.
Choosing and securing a platform is a decision worth getting right the first time. If you want help evaluating platforms, hardening an existing store, or migrating to one that fits, our platform migration and development teams do exactly this — with SEO equity preserved through proper redirects on any move.