We build software that's secure by design.
Thin Oxygen is a small, senior software firm. We build secure custom software, support the messaging systems teams rely on, and take phishing off your plate entirely — remediation and simulation, fully managed.
Software we've built and stand behind.
The tools we build become products that ship on their own. Two are live today — managed anti-phishing for Microsoft 365, and an operational-intelligence platform for public-safety agencies — both built security-first, on the same foundations as our client work.
PhishVector
Two jobs, one product. PhishVector clears malicious email across your Microsoft 365 tenant, and runs the phishing-simulation drills that keep your people sharp. It runs on our cloud and connects to your Microsoft 365 through a secure app registration — nothing to install or host on your side. Let us operate it for you, or drive it yourself from the console. Built for MSPs and MSSPs too.
Hoozin RAID
Hoozin RAID replaces fragmented communication systems with a single secure platform for fusion centers, public-safety agencies and emergency management. A classified intel feed with source tracking and geolocation mapping, role-based communities for inter-agency collaboration, and automated daily briefings — reachable from web, iOS and Android, in a dedicated environment per customer.
We build around how your team actually operates.
No off-the-shelf compromises and no bloated rollouts. We work directly with you, ship software that fits your workflows, and stay on to keep it running.
Assess
We start on your terms — learning your workflows, your constraints, and how sensitive your data really is.
Build
We design and build software around the way your team works — not the other way around. Practical, focused, tested.
Secure
Encryption, hardened auth, least-privilege access and audit trails are built in from day one — never bolted on later.
Support
We stay on. Azure-hosted, monitored and maintained, with a direct line to the people who built it.
A short list, done properly.
We're a software company, not a reseller. We take on work where security actually matters — and we don't pad the list with things we don't do well.
Secure Software Development
Custom applications and platforms, built security-first and AI-accelerated — on Microsoft 365 and Azure, with hardened auth and audit built in.
- Custom web & cloud apps
- Passkeys / FIDO2, MFA
- Least-privilege & audit trails
- AI-accelerated delivery
Messaging & Communications Support
We build and support the secure messaging systems teams rely on — encrypted real-time chat, calling, and the plumbing behind them.
- Encrypted messaging + calling
- Real-time infrastructure
- Integration & delivery support
- Reliability & monitoring
Managed Phishing Remediation
When a malicious email lands, we find every copy across your Microsoft 365 tenant and remove it. It runs on our cloud and connects to yours through a secure app registration — nothing to install or host. Let us operate it, or drive it yourself.
- Fully managed service
- Connects to your M365 — no install
- Tenant-wide discovery & purge
- Approval-gated, fully audited
Phishing Simulation Campaigns
Realistic phishing drills, injected straight into inboxes — no spam-filter fighting. Track who opens, clicks and reports, then watch your phish-prone rate fall over time.
- Ready-made lure templates
- Inbox-injected delivery
- Open / click / report tracking
- Repeat-offender scoreboard
A small firm that takes security seriously.
Thin Oxygen is a senior software company out of Avon Lake, Ohio. We build secure custom software, support the messaging systems teams depend on, and clean up phishing threats when they get through.
We keep the list short on purpose. We'd rather do a few things properly than everything adequately — which means security isn't an afterthought here, it's the way we build from the first line of code.
Secure by construction, not by audit.
The same principles run through everything we ship. Security isn't a feature we bolt on at the end — it's the shape of the system.
Auditable by default
Every sensitive action is logged and traceable. When something matters, there's a record — not a shrug.
Passwordless & phishing-resistant
FIDO2 passkeys, TOTP MFA, and device-integrity checks as defaults, not upsells.
Least-privilege everywhere
Access is scoped tight and data is isolated by design. No shared blast radius when something goes wrong.
We stay on
We don't ship and vanish. Azure-hosted, monitored and maintained, with a direct line to the people who built it.
Have something that needs building securely?
Tell us what you're working on — custom software, messaging, or a phishing problem. We'll tell you straight whether we can help.