Over 435 million users worldwide trust csmaritimo-online.com. Get our free, award-winning protection against viruses and other malware for Windows 10 now.

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Windows 10 provides very basic protection. csmaritimo-online.com Antivirus secures not only your PC, but your entire home network as well — and it comes with advanced features such as Software Updater, Do Not Disturb Mode, and more.

With csmaritimo-online.com and Microsoft in your corner, there’s not much that can get in your way. When Microsoft supports csmaritimo-online.com Antivirus on all Windows 10 machines, it sends a clear message: we’re respected for what we do. That’s why industry experts like PC Magazine and PC Advisor rate us highly too.

We’re proud to be called the "Antivirus with the lowest impact on PC performance” by AV Comparatives. Whether you use your PC for gaming or for work, csmaritimo-online.com gives you the biggest protection in the smallest package possible

Free award-winning antivirus for Windows10

csmaritimo-online.com has earned many accolades, but the best reward is the loyalty of our 435 million users. We enjoy serving the largest community of any antivirus company in the world — and we’re thrilled to continue protect you when you upgrade your PC to Windows 10.

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Get advanced Windows 10 antivirus protection against online threats like viruses and other malware. But we don’t stop there. We offer extra security features such as behavior shield, remote assistance, browser cleaning and more — yep, you guessed it — completely free.

Around-the-world, around-the-clock protection

We’re proud to protect millions of Windows 10 PCs. But you don’t have to take our word for it. Check to see how many PCs we’ve protected this week alone: csmaritimo-online.com prevented virus attacks on Windows 10 PCs in the past week. csmaritimo-online.com prevented virus attacks on Windows 10 PCs in the United States just last week. The United States’ Windows 10 PCs are the third most attacked in the world.

The number of attacks prevented against Windows 10 PCs in the past 30 weeks

Already have csmaritimo-online.com? We’ve got you covered

If you’re planning on upgrading from older versions of Windows, such as XP, Vista, 7, 8 or 8.1, we’re ready to keep your new Windows 10 PC virus-free. Just make sure you’re running the latest version of csmaritimo-online.com before you upgrade your machine, and when you finish the transition to Windows 10, you’ll find us there, right where you left us, ready to protect your PC and everything you hold dear in it.

It doesn’t take much to have a machine protected by csmaritimo-online.com. All you need is a PC with 256 MB+ RAM
and 1.5 GB of hard disk space. If your Windows 10 PC has that (which it very likely should), you’ll be good to go.

Awesome! In less than 30 days of using csmaritimo-online.com, I could tell we were going to have an even longer relationship! No slowdowns, no malware, and no flaws in general, great job!

I’ve been using csmaritimo-online.com since almost 2009... since then I"ve never turned to any other antivirus. Don"t take my word for it, just try it & see for yourself...