Kaspersky 21.26.4.406

Kaspersky 21.26.4.406

Kaspersky Lab  ❘ Commercial
Windows Android iOS
Latest Version
21.26.4.406
Safe to install

Kaspersky: Comprehensive cybersecurity protection for your devices.

Human-built. AI-enhanced.
Minh Ong

Kaspersky provides a wide range of security features to safeguard your devices from online threats.
2025 Editor's Rating

Kaspersky antivirus and security suite overview

Kaspersky provides layered cybersecurity for Windows, macOS, Android and iOS with a focus on malware detection, real-time protection and privacy tools. The product line ranges from a free antivirus offering to feature-rich premium suites that bundle a secure VPN, password manager, parental controls and safe-browsing protections designed for home users and small businesses.

Core protection features

  • Real-time antivirus and anti-malware engine with cloud-assisted scanning and heuristic analysis to catch known and emerging threats.
  • On-demand and scheduled scans (quick, full, custom) plus a quarantine area for suspicious files.
  • Web and email protection that blocks malicious links, phishing pages and dangerous downloads before they reach the device.
  • Safe Money/secure payment tools that isolate online banking and shopping sessions to reduce fraud risk.
  • Ransomware protection and file rollback features to guard critical data against encryption-based attacks.

Mobile apps and VPN

Kaspersky’s Android and iOS apps offer antivirus scanning (Android), app and web protection, anti-phishing and theft-prevention tools for mobile devices. The company also includes a VPN: a limited free tier suitable for occasional encrypted browsing and a premium unlimited option bundled with higher-tier subscriptions. The VPN is useful for public Wi‑Fi protection and basic privacy needs.

Detection performance and independent testing

Kaspersky consistently performs highly in independent lab tests from AV‑Test and AV‑Comparatives, showing near‑top malware detection rates and low false positives. Its multi-engine approach, threat intelligence updates and machine learning components provide strong protection against zero‑day exploits and new malware variants.

User interface and experience

  • Desktop and mobile interfaces are clean and easy to navigate, with a central dashboard that highlights real-time security status, recent scan results and available updates.
  • Advanced users can customize scan profiles, exclusions and protection levels while casual users benefit from sensible defaults and one‑click actions.
  • Help texts, walkthroughs and in‑app prompts guide configuration of VPN, parental controls and secure payment features.

Performance impact and system requirements

Kaspersky is optimized to minimize CPU and disk load during background scans and updates. On modern hardware the impact is typically low; lightweight modes further reduce resource use for older or less powerful machines. Supported platforms include Windows 10/11, current macOS releases, Android and iOS, with regular updates to maintain compatibility.

Additional security tools

  • Password Manager for secure credential storage and autofill.
  • Parental controls to manage screen time, block inappropriate content and monitor children’s online activity.
  • Privacy protection tools to disable webcam/microphone access and clean tracking data.
  • Vulnerability scanner and system cleanup utilities to identify outdated software and optimize performance.

Free options, trial and subscription plans

Kaspersky offers a free antivirus edition for basic protection and trial periods for premium suites. Paid tiers extend protection across multiple devices, add an unlimited VPN, advanced privacy controls and premium customer support. Pricing is tiered for single-device, multi-device and family plans with discounts for annual billing.

Installation, updates and support

  1. Download installers or apps directly from Kaspersky’s official site, Google Play or the App Store for verified builds.
  2. Setup is straightforward: install, run an initial update and perform a first scan; mobile apps request standard permissions for web and app protection.
  3. Automatic updates deliver signature and engine improvements; customers can also enable automatic program updates to get new features sooner.
  4. Support channels include knowledgebase articles, FAQs, community forums and paid options for chat, phone and email assistance.

Data protection and compliance

Kaspersky states compliance with international data protection standards and provides transparency about data handling practices. For regulated environments, enterprise-grade products include additional management and reporting controls to help meet organizational policies.

Who benefits most from Kaspersky

  • Users seeking high detection rates and proven performance in independent tests.
  • Families who want device-wide protection plus parental controls and password management.
  • Anyone who travels or uses public Wi‑Fi and needs a bundled VPN for basic privacy.
  • Small businesses that require multi‑device licensing and centralized management options.

Overview

Kaspersky is a Commercial software in the category Security developed by Kaspersky Lab.

The users of our client application UpdateStar have checked Kaspersky for updates 6,409 times during the last month.

The latest version of Kaspersky is 21.26.4.406, released on 08/20/2026. It was initially added to our database on 07/08/2008. The most prevalent version is 21.26.4.406, which is used by 71% of all installations.

Kaspersky runs on the following operating systems: Windows/Android/iOS.

Kaspersky has not been rated by our users yet.

Pros

  • Comprehensive protection against malware and viruses
  • Strong firewall protection
  • User-friendly interface
  • Variety of additional security features like VPN and password manager
  • Regular updates to maintain security effectiveness

Cons

  • Can be resource-intensive and slow down system performance
  • High subscription cost compared to some competing products
  • Controversy surrounding alleged ties to Russian government may raise security concerns for some users

FAQ

What is Aurora Live Skin?

Aurora Live Skin is a custom skin designed to enhance the visual appearance of Kaspersky Internet Security. It is created by a team of independent designers and is not an official product of Kaspersky Lab.

How do I install Aurora Live Skin?

To install Aurora Live Skin, download the skin file from the official website and follow the instructions provided. It should be a straightforward process that doesn't require any advanced technical knowledge.

Can Aurora Live Skin cause any issues with Kaspersky Internet Security?

Aurora Live Skin is designed to work seamlessly with Kaspersky Internet Security. However, it's always a good idea to keep your antivirus software up to date and to avoid installing unknown files from untrusted sources.

Is Aurora Live Skin available for free?

Yes, Aurora Live Skin is available for free. You can download it from the official website or from other reputable sources.

Is Aurora Live Skin compatible with all versions of Kaspersky Internet Security?

Aurora Live Skin is compatible with most versions of Kaspersky Internet Security. However, if you encounter any issues, you should check the compatibility information provided on the official website or contact the support team for assistance.

Is Aurora Live Skin customizable?

Yes, Aurora Live Skin is highly customizable. You can modify the skin file to change the color scheme, fonts, and other visual elements to suit your preferences.

Can I use Aurora Live Skin with other antivirus software?

Aurora Live Skin is specifically designed to work with Kaspersky Internet Security. It may not work correctly or may cause compatibility issues with other antivirus software.

How do I uninstall Aurora Live Skin?

To uninstall Aurora Live Skin, simply remove the skin file from your computer. If you encounter any issues or need assistance with the removal process, you can contact the support team for assistance.

How do I report an issue or suggest a feature for Aurora Live Skin?

You can contact the support team for Aurora Live Skin via email or social media to report issues or suggest new features. The team is always happy to receive feedback and improve the product.

Is it safe to use third-party skins with my antivirus software?

It's generally safe to use trusted third-party skins with your antivirus software, but you should always exercise caution and only download files from reputable websites. Malicious files and software can be disguised as skins, so it's important to maintain basic cybersecurity hygiene practices at all times.


Minh Ong

Minh Ong

I'm Minh, a software engineer and author with a passion for exploring and writing about the latest in software and technology. With my experience in software development and a specialization in software updates and content creation, I bring a deep understanding of the tech landscape to my reviews and articles. My focus is on providing you with comprehensive insights into general software topics and the latest industry news.

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6,409 users of UpdateStar had Kaspersky installed last month.

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