When a client first reaches out to my team as a Stacker supplier, there’s one question that consistently rises to the top of their list, even before they ask about our pricing or implementation timelines: Does Stacker support data encryption? I get it—if you’re building internal tools, client-facing databases, or operational workflows with Stacker, your data isn’t just lines of code or random numbers. It’s the raw material that keeps your business running: customer contact info, financial records, product inventory details, proprietary project roadmaps. The last thing you want is for that sensitive data to slip into the wrong hands, or for a breach to derail months of trust you’ve built with your users. Over the five years I’ve worked with our clients on Stacker deployments, I’ve sat through dozens of demos where stakeholders lean in, notebooks open, waiting for a clear answer to that exact question. Today, I want to break that down, not as a sales pitch (well, not only as one) but as someone who’s walked with clients through encrypting customer data in Stacker instances, troubleshooting access controls, and adjusting workflows to keep both speed and security at the forefront. Stacker
Let’s start with the basics that you won’t find buried deep in a generic product spec sheet. When we talk about data encryption in tools like Stacker, there are two core layers that matter: data in transit and data at rest. Most people learn about these two terms early in their security training, but the way they apply to low-code tools like Stacker is what trips a lot of folks up. Data in transit is the data moving between your team’s devices, Stacker’s servers, third-party integrations like Salesforce or QuickBooks, and the end-users accessing your Stacker apps. Data at rest is the data sitting stored on Stacker’s servers, not actively moving between systems.
For data in transit, Stacker uses industry-standard Transport Layer Security (TLS) 1.3 by default, no extra setup required. What does that mean for your team? Every time you log into your Stacker workspace, every time you pull a new record from your integrated database, every time a user submits a form in your public Stacker app, that data is wrapped in an encrypted tunnel that can’t be read or altered by anyone snooping on public networks—like a coffee shop Wi-Fi, or an unsecured office network. I remember a client last year, a small e-commerce brand based in Portland, who initially thought they needed to purchase an add-on SSL certificate for their Stacker subdomain. They’d worked with another low-code tool before that required separate SSL setup, so they expected the same. Once we showed them that Stacker’s default TLS 1.3 covered that entire layer, they were able to skip that extra step and get their product inventory app live in half the time they’d budgeted. That’s the kind of real, actionable detail I wish more security guides emphasized—it’s not just that Stacker uses TLS 1.3, it’s that it requires it, by design, so you don’t have to manually turn it on or configure it for basic use.
Now, the part that most clients are actually asking about when they follow up: data at rest. This is where Stacker’s approach gets more specific, and where our team works closely with clients to align their encryption needs with their industry regulations—whether that’s GDPR for EU users, HIPAA for healthcare providers, PCI DSS for brands handling credit card data, or just the internal security policies of a larger enterprise. By default, Stacker encrypts all data at rest using AES-256, the same encryption standard used by governments and global financial institutions to protect classified and sensitive information. That’s not a buzzword we throw around casually; AES-256 is the gold standard for at-rest encryption, and Stacker’s default use of it means you don’t have to opt into a paid plan or jump through hoops to get that baseline security.
But here’s the nuance that separates Stacker from a lot of other low-code tools: client-managed encryption keys. For clients handling highly sensitive data, like patient health information or proprietary trade secrets, Stacker offers the option to bring your own encryption key (BYOK) and store that key in your own cloud key management system (KMS)—think AWS KMS, Google Cloud KMS, or Azure Key Vault. I can’t overstate how important this is for organizations in regulated industries. A few months back, we worked with a regional dental clinic that needed to build a patient appointment tracker and medical notes database in Stacker. They were required by HIPAA to retain exclusive control over the encryption keys used to protect patient records, because if Stacker (as the tool provider) held the keys, that would put the clinic at risk of a compliance violation. We walked them through the BYOK setup process, which took less than two business days of their IT team’s time, and once it was configured, their compliance auditor signed off on the data security layer within a week. That’s the kind of flexible, compliant encryption that makes Stacker a go-to for regulated small and mid-sized businesses, not just startups or unregulated teams.
But encryption isn’t just about keys and standards—it’s about how that encryption works alongside access controls, because the most powerful encryption in the world is useless if someone who shouldn’t have access to your data can just click “view” and bypass it. Stacker’s role-based access controls (RBAC) integrate directly with its encryption framework, meaning that encrypted data is only decrypted for users who have explicit permission to view it. For example, if you build a Stacker app for your sales team that includes client financial records, you can set it so only the sales director (and no one else) can view the full payment history for a high-value client. That data remains encrypted on Stacker’s servers, and only decrypts when that director logs in to their workspace and navigates to that specific client’s record. I’ve seen clients use this combination of encryption and RBAC to build apps that replace legacy systems they’d previously been hesitant to move to the cloud, because they could map every security control exactly to their team’s roles and policies.
Wait, but let’s address a common concern I hear from clients who are considering moving sensitive internal data to Stacker: what about data shared via public Stacker links? A lot of teams build public-facing forms or data portals with Stacker, and they worry that if someone gets hold of a public link, they’ll be able to access unencrypted sensitive data. Here, too, Stacker has tailored encryption controls. Public links to Stacker records or forms can be password-protected by the workspace owner, meaning anyone accessing the link has to enter a unique password before they can view or submit data. For even higher sensitivity, you can restrict public link access to specific email domains, so only users with a company email from your client’s domain can view the shared data. The data itself remains encrypted at rest, even when being accessed via a password-protected public link—so if a link is accidentally shared, or a password is guessed, the attacker would still need the underlying encryption key to actually read the raw data. That’s a layer of safety that a lot of teams don’t realize Stacker offers until we walk through it in a test environment.
Of course, no security discussion is complete without talking about third-party integrations, because most Stacker apps aren’t isolated—they connect to tools like HubSpot, Stripe, Airtable, or QuickBooks, and clients want to know if data shared between Stacker and those tools remains encrypted. Stacker encrypts all data in transit to and from integrated tools, using TLS 1.3, and also adheres to the data encryption requirements of those third-party platforms. For example, if you connect your Stacker app to Stripe to process customer payments, the credit card data that flows between the two tools is encrypted in transit, and Stacker never stores full credit card numbers on its own servers— it only pulls the necessary metadata to sync payments, keeping sensitive financial data separate from your Stacker workspace’s core data. We’ve had multiple clients in the e-commerce space highlight this as a key factor in switching from more expensive, rigid custom-built tools; Stacker’s integration encryption eliminates the need for custom middleware that would add security gaps and slow down their workflows.
Now, I’d be remiss if I didn’t acknowledge that no tool is 100% impenetrable, and encryption is only one piece of a comprehensive data security strategy. Stacker, like any cloud-based tool, undergoes regular third-party security audits, publishes transparency reports, and has a dedicated security team that monitors for potential vulnerabilities. But as a supplier that works directly with clients to implement Stacker security, I can tell you that the encryption framework is one of the most well-documented, user-friendly parts of the platform. Unlike some enterprise tools that require a team of security engineers just to configure encryption, Stacker’s encryption controls are built into the workspace settings, with clear, plain-language guides for non-technical teams to follow. We don’t lock encryption features behind a $10,000 enterprise plan, either—basic AES-256 encryption at rest is available on all paid Stacker plans, and BYOK is available on mid-tier and enterprise plans, which is a big deal for small to mid-sized businesses that can’t afford six-figure custom security solutions.
I want to circle back to that initial question, because I’ve talked around it a lot, and I think the answer is more nuanced than a simple “yes” or “no.” Stacker does support data encryption, and it does so at every critical layer: data in transit with mandatory TLS 1.3, data at rest with default AES-256, flexible client-managed keys for regulated industries, and encryption integrated with role-based access controls to prevent unauthorized access. What Stacker doesn’t do is force a one-size-fits-all encryption model—we work with each client to align Stacker’s encryption setup with their specific needs, whether that’s a local café tracking customer loyalty data or a healthcare clinic handling sensitive patient records.
If you’re evaluating Stacker for your business and have more specific questions about encryption—like how it applies to your industry’s compliance rules, how to set up BYOK, or how to test encryption for your specific workflow—our team is here to walk through it with you. We can set up a custom demo, share client case studies from businesses similar to yours, and work with you to map out a Stacker deployment that keeps your data secure without sacrificing the speed and ease that makes low-code tools valuable. There’s no pressure, no hard sell—just a conversation about what your business needs to keep its data safe, and how Stacker can meet that need.
If you’re ready to talk through your Stacker implementation and encryption requirements, reach out to our team to connect with a procurement specialist to discuss your project.
Diesel Forklift References
- Stacker Security Documentation: Data Encryption at Rest, Stacker Inc.
- Transport Layer Security (TLS) 1.3 Protocol Specification, Internet Engineering Task Force (IETF)
- AES Encryption Standard (FIPS 197), National Institute of Standards and Technology (NIST)
- HIPAA Security Rule: Technical Safeguards for Electronic Protected Health Information (ePHI), U.S. Department of Health and Human Services (HHS)
- PCI DSS v4.0: Requirement 3 – Protect Stored Account Data, Payment Card Industry Security Standards Council (PCI SSC)
Huazheng Heavy Industry Machinery Equipment Co., Ltd.
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