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Anti-Ransomware Tool
Kaspersky®Anti-Ransomware Tool

Don’t get locked out of your files

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

The new, improved Kaspersky Anti-Ransomware Tool!

This lightweight ransomware protection 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.

Shared folders protection

Kaspersky Anti-Ransomware Tool is capable of blocking both local and remote attempts to encrypt user data.

Works with most security software

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

Crypto-miners detection

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

The Premium Ransomware Solution

Kaspersky Anti-Ransomware Tool, providing advanced protection to 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 Advanced Ransomware Protection, a secure Password Manager, and a superfast VPN.
Kaspersky Endpoint Security Cloud
Endpoint Security Cloud
For Business
A cybersecurity suite with Advanced Ransomware Protection in addition to web and email protection featuring an intuitive cloud-based console.

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
Provides essential Ransomware Protection, covering up to 5 devices per account, that’s completely free to download and use.
Anti-Ransomware Tool
For Business
Essential Ransomware Protection covering up to 50 devices with email reporting, that’s completely free to download and use.

How we secure you against Ransomware

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

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.

Industry Awards

User Reviews

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)