Protection and support for Home and Business
Security for what matters. Tools for getting help.
Explore Email Security, Antivirus, and Tech Support for the inboxes and computers in your agreed service scope.
Unmeasured: customer protection, repair outcomes and support response times. Launch approval remains pending. Capability disclosures.
What CloudCastle is
Security and maintenance software for your computers
CloudCastle is a subscription service for households and businesses. Choose the services you need, then connect inboxes or install our app on the computers you own. Detection, maintenance and remote-support mechanisms are described below; they are not promises of prevention or automatic recovery.
If you sign in with Google or Microsoft, we use that access to confirm your identity and authenticate your account. We process your name and email address. Connecting Email Security separately enables mailbox-content processing. The current data-handling disclosures and unresolved verification limits are described in our Privacy Policy, and the rules of the service in our Terms of Service.
How it works
Three steps to an agreed scope
Deployment and ongoing operation require verification and oversight.
Install the app
Unmeasured: installed-artifact compatibility on Windows and Linux. macOS Beta: no verified Developer ID/notarization claim; Gatekeeper, user-approved TCC permissions and physical Intel/Apple Silicon/Rosetta capability checks are required. No OS parity is claimed.
We keep an eye on things
Code-verified: endpoint health and update reporting mechanisms. Continuous field coverage is unmeasured.
Request help
Questions about the app are always free. Want a technician to fix the computer itself? Add that on.
What we do
What we watch for you
Code-verified mechanisms, not measured protection or repair outcomes. Enabled features depend on platform, policy and permissions.
Endpoint threat analysis
Behavior rules and file checks produce evidence for policy-gated response. Prevention of damage is unmeasured.
Explore Advanced EDR
Email risk analysis
Gateway and post-delivery mailbox mechanisms exist in code. Customer mail-flow acceptance and protection outcomes are unmeasured.
Explore Email Security
Website risk filtering
Policy-controlled network filtering is optional. It does not guarantee that malicious pages cannot open.
Maintenance tools
Allowlisted maintenance actions are subject to governance. Automatic repair and update success are unmeasured.
We show our work
Work-order and action-report mechanisms record changes. Complete field audit coverage remains unmeasured.
Email security
Email analysis with explicit limits
Invoice fraud, impersonation and QR-code lures are inputs for the email analysis pipeline. Detection is not guaranteed. The mode connected to your mail determines the exposure window.
- Code-verified: SMTP gateway filtering mechanisms; not a customer pre-delivery outcome claim
- Code-verified: connected-mailbox scanning and quarantine mechanisms operate after delivery
- Code-verified: identity, intent, QR, URL and attachment analysis paths
- Code-verified: click-time checks for rewritten links when URL defense is enabled
- Code-verified: quarantine review and release mechanisms; customer reversibility remains unmeasured
Observed configuration, 10 September 2026: the owned cloudcastle.ai domain is enabled in gateway mode. This does not prove external SMTP delivery, real customer acceptance or authorization to launch gateway service.
How the design differs
Not the antivirus you grew up with
Signature matching and behavior analysis answer different questions. CloudCastle combines these mechanisms; comparative efficacy is unmeasured.
Signature matching alone
- Compares evidence with known signatures
- Depends on the signatures and evidence available
- Detection does not itself establish remediation
- Maintenance and support are separate concerns
CloudCastle
- Code-verified: behavior rules alongside file analysis
- Code-verified: ransomware canary and policy-gated response paths
- Code-verified: governed maintenance and action reporting
- Unmeasured: prevention, automatic recovery and support response times
Who it's for
Two ways to use one app
Choose Home or Business, then pick the same three services.
Tech Support
A route to request computer help
Tech Support includes a remote-support workflow for enrolled endpoints within the agreed scope. Staff availability and response times remain unmeasured; this is not an around-the-clock support commitment.
Choose Tech Support on its own or alongside Email Security and Antivirus. Remote access requires consent; the code-level consent controls still need installed-endpoint field verification.
Start with the computers you already have
Home and Business accounts both start online. Choose any combination of Email Security, Antivirus, and Tech Support.