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Kaspersky® Anti-Ransomware Tool

Don’t get locked out of your files

Kaspersky Anti-Ransomware is your free digital hostage negotiator, offering strong protection from ransomware and cryptolockers for desktops, laptops and servers.
  • Lightweight installation that works with your current security software
  • Solutions for both home and business
  • Available as a free, standalone program or a comprehensive, integrated tool offered with our premium security plans
Man looks into the laptop

The new, improved Kaspersky Anti-Ransomware Tool!

This lightweight tool offers complete ransomware protection by using cloud-assisted behavior detection to block ransomware and crypto-malware immediately. And because it's GDPR ready, you can trust that your data is processed and protected responsibly.

Crypto-miners detection

In addition to ransomware, Kaspersky Anti-Ransomware Tool can detect and block adware, pornware and riskware objects including crypto-mining software.

Works with most security software

It doesn't matter which software you use. Kaspersky Anti-Ransomware Tool is compatible with most cybersecurity solutions.

Ransomware scanning

The Anti-Ransomware Tool automatically scans and monitors files on your computer to proactively identify and neutralize threats.

See Kaspersky Anti-Ransomware Tool in action!

Use this interactive version of Kaspersky Anti-Ransomware Tool to explore its feature and see how it keeps your system protected from hackers trying to lock you out of your own computer.

Free Ransomware Defense

The essential elements of Kaspersky Anti-Ransomware Tool are also available as a free, standalone program that protects you from being locked out of your computer.

Anti-Ransomware Tool
For Home
Covers up to 5 devices per account. Completely free to download and use.
Anti-Ransomware Tool
For Business
Protects up to 50 devices with email reporting. Completely free to download and use.

The Premium solution is the ideal choice

Our top-tier plans include built-in ransomware protection and other essential features

Kaspersky Premium offers Complete Online Protection

Besides Anti-Ransomware, you get complete protection for your devices, privacy, and identity
  • Antivirus, Anti-hacking, and Threats Removal
    Multilayered protection designed to prevent and neutralize malware, ransomware, unauthorized access, and hijacking
  • Performance optimization
    Efficient tools to help you boost the speed of your devices and manage your storage space
  • Privacy protection
    Advanced features like Private Browsing, Online Payment Protection, and Stalkerware Detection keep you from being tracked online

The Premium Ransomware Solution

Our Anti-Ransomware Tool, providing advanced protection for your systems and files, is built into our top-tier cybersecurity plans. So if you want the best defense against ransomware, you’ll want the best internet security suites on the market today.

For Home
Offers the ultimate in privacy protection with a built-in Kaspersky Anti Ransomware Tool plus a secure Password Manager and superfast VPN.
Kaspersky Endpoint Security Cloud
Endpoint Security Cloud
For Business
A cybersecurity suite with Advanced Ransomware Protection plus web and email protection with an intuitive cloud-based console.

How Kaspersky Anti-Ransomware Tool works

Kaspersky Anti-Ransomware Tool protects from ransomware at any stage of the attack from delivery to execution using technologies in the multi-layered protection stack

Industry Awards

Your best choice for cybersecurity

Keep yourself safe from online threats with our premium products for home and business

Kaspersky Endpoint Security Cloud for business
An easy-to-use, always up-to-date security suite to protect your business against known and emerging cyberthreats with a collection of next-generation features
Kaspersky® Anti-Ransomware Tool for business
A free tool to help prevent you from being locked out of your own files and devices

System Requirements

Technical Requirements

  • Windows 7 – 11
  • Windows Server 2008 R2 - 2022
  • Intel Pentium III CPU 1 GHz for 32-bit and 64-bit systems or a compatible equivalent
  • Memory:
    - For 32-bit operating systems: 1 GB
    - For 64-bit operating systems: 2 GB
  • Disk Space: 350 MB of free space on the hard drive
  • Internet connection to update the databases and application modules


  • Kaspersky Anti-Ransomware Tool is compatible with all security software
  • Kaspersky Anti-Ransomware Tool functionality is included in all Kaspersky paid endpoint solutions so it is not required to install it alongside (such installation will be prevented to avoid application overhead)