Security software for every computer
We look after your computers
We block attacks, keep every machine up to date, and back up your files. Install the app once — most problems get fixed before you hear about them.
Built and staffed in the United States
How it works
Three steps, then it runs itself
No server to set up and nothing to check every morning.
Install the app
A few minutes per computer. It works on Windows, Mac, and Linux.
We keep an eye on things
Threats, updates, disk space, and backups — checked around the clock.
You are never stuck
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
One app on every computer, quietly doing the work.
We keep your files safe
If ransomware strikes, we restore your files to the way they were.
Explore Secure Cloud
We keep scam emails out
Fake invoices and phishing links are caught before you see them.
Explore Email Security
We block dangerous sites
Fake shops, fake logins, and infected pages never open.
We keep everything updated
Apps stay current and your computer stays tidy automatically.
We show our work
Every fix records what changed, when, and on which computer.
Why it works better
Not the antivirus you grew up with
Older tools only recognize threats someone has already cataloged, and they still need a person to clean up. Ours watches how software behaves and acts on its own.
The old way
- Matches a list of threats already known
- Brand-new attacks get through until the list catches up
- Tells you something is wrong, then waits for you
- A separate tool for updates, and another for backups
CloudCastle
- Watches how programs behave, so new attacks stand out
- Stops ransomware while it runs and puts your files back
- Fixes what it can itself, and writes down what it changed
- Updates, backups, and security in one app
Who it's for
Three ways to use one app
What changes is who's in charge of the screen.
Managed for you
Want CloudCastle to manage your systems?
You do not have to run any of this yourself. An American technician can watch your computers for you and handle whatever the AI cannot finish — the machine that needs rebuilding, the fix that needs a judgment call, the person who wants someone to talk to.
An add-on to any plan, quoted separately — or we introduce you to a partner provider who can take you on. Worked 10 AM–6 PM Central, Monday through Friday. Help with CloudCastle itself is always included.
Start with the computers you already have
Home plans start with a free 14-day trial. Business and providers start with a quick call.