Kaspersky Anti-Ransomware Tool
Kaspersky Anti-Ransomware Tool is a free Windows utility for protecting desktops, laptops and servers against ransomware and cryptolocker threats.
What Kaspersky Anti-Ransomware Tool is
Kaspersky Anti-Ransomware Tool is a free Windows utility for protecting desktops, laptops and servers against ransomware and cryptolocker threats. It uses cloud-assisted behavior detection to identify and block ransomware and crypto-malware, while automatically scanning and monitoring files for threats. It can also detect and block adware, pornware, riskware and crypto-mining software. Its protection stack is designed to cover threats from delivery through execution. Kaspersky says the tool works alongside current security software and is compatible with most cybersecurity solutions. The Home plan is free to download and use for up to five devices per account; the Business plan is free to download and use for up to 50 devices and includes email reporting. Supported systems are Windows 7–11 and Windows Server 2008 R2–2022. Requirements include a 1 GHz Intel Pentium III or compatible CPU, 350 MB of disk space, and an internet connection for updates, plus 1 GB memory on 32-bit systems or 2 GB on 64-bit systems. Installing it alongside Kaspersky paid endpoint products is prevented.
Good
- Free to download and use.
- Uses cloud-assisted behavior detection.
- Also blocks adware, pornware, riskware and crypto-mining software.
- Works alongside most cybersecurity solutions.
- Supports Windows 7–11 and Windows Server 2008 R2–2022.
Watch out
- Windows is the only listed platform.
- Internet access is required for updates.
- Cannot be installed alongside Kaspersky paid endpoint products.
Who it suits
It suits Windows users who want a free tool focused on ransomware and related threats. The Home plan covers up to five devices per account, while Business covers up to 50 devices and includes email reporting.
Verdict
Kaspersky Anti-Ransomware Tool offers focused Windows protection at no cost, with separate Home and Business device limits. Check the supported Windows versions and system requirements before installing.
Plans and prices
From Kaspersky Anti-Ransomware Tool's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Kaspersky Anti-Ransomware Tool for Business | Free | Up to 50 devices · email reporting · completely free to download and use |
| Kaspersky Anti-Ransomware Tool for Home | Free | Up to 5 devices per account · completely free to download and use |
The facts
Each one read from Kaspersky Anti-Ransomware Tool's own pages, with the date it was checked.
What it does
- Additional detections
- It can also detect and block adware, pornware, riskware, and crypto-mining software.checked 4 Oct 2026
- Automatic monitoring
- It automatically scans and monitors computer files to identify and neutralize threats.checked 4 Oct 2026
- Compatibility
- Kaspersky says the lightweight tool works alongside current security software and is compatible with most cybersecurity solutions.checked 4 Oct 2026
- Detection
- It uses cloud-assisted behavior detection to identify and block ransomware and crypto-malware.checked 4 Oct 2026
- Paid endpoint products
- The tool’s functionality is included in Kaspersky paid endpoint solutions, and installing it alongside them is prevented to avoid application overhead.checked 4 Oct 2026
- Privacy
- The product page describes the tool as GDPR ready and says data is processed and protected responsibly.checked 4 Oct 2026
- Protection stages
- The tool is designed to protect against ransomware from delivery through execution using a multilayered protection stack.checked 4 Oct 2026
- Purpose
- The tool provides ransomware and cryptolocker protection for desktops, laptops, and servers.checked 4 Oct 2026
- Requirements
- The listed requirements include a 1 GHz Intel Pentium III or compatible CPU, 1 GB memory for 32-bit or 2 GB for 64-bit systems, 350 MB disk space, and an internet connection for updates.checked 4 Oct 2026
The company
- Company
- Kaspersky describes itself as a global cybersecurity and digital privacy company founded in 1997.checked 4 Oct 2026
- Founded
- 1997checked 28 Sep 2026
- Headquarters address
- Kaspersky’s privacy policy identifies AO Kaspersky Lab at 39A Leningradskoe Shosse, Moscow, Russian Federation.checked 4 Oct 2026
Where it runs
- Windows support
- The listed operating systems are Windows 7–11 and Windows Server 2008 R2–2022.checked 4 Oct 2026
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