Comodo Internet Security

Comodo Internet Security is a Windows security suite that combines antivirus protection, a packet-filtering firewall, host intrusion prevention, and automatic sandboxing for unknown files. Auto Sandbox runs unfamiliar files in an isolated environment so they cannot damage the computer. Its firewall can block unauthorized inbound and outbound connections, control which programs access the internet, and stealth computer ports. Secure Shopping isolates a browser session and includes keylogger prevention, screen-capture blocking, and SSL certificate inspection. It can also run applications such as Outlook, password managers, Excel, and VPN clients in that isolated environment. The product page describes cloud antivirus scanning, behavior analysis, and whitelisting, as well as malicious website filtering with custom block lists. A free plan covers core security features; Comodo Internet Security Pro for one device costs $29.99 a year. The guide lists Windows 10, 8, and 7, and says version 12.0.0.6882 and later does not support Windows XP or Vista. Support resources include Comodo Support, an online help guide, and a user forum.

Comodo Internet Security combines file isolation, firewall controls, and browser-session protections for Windows. Check the listed operating-system support before choosing it, especially on older Windows versions.

Comodo Internet Security may suit Windows users looking for antivirus, firewall, and isolation tools. Its Secure Shopping feature also supports running selected applications in an isolated environment.

Comodo Internet Security is a Windows suite combining antivirus, firewall, and isolation tools. It suits people who want broad security controls without paying for the core edition, though its Windows support stops at Windows 10, 8, and 7.

Overview

Comodo brings antivirus protection, host intrusion prevention, a packet-filtering firewall, and automatic isolation of unknown files into one suite. Auto Sandbox runs unfamiliar files separately from the computer, a useful safeguard for people who handle unknown downloads. The trade-off is that remediation automation is manual, so users should not expect every cleanup step to happen on its own.

Cloud antivirus scanning, behavior analysis, and whitelisting complement the local protections. Malicious Website Filtering blocks dangerous sites and allows custom block lists for family members. These features give the free edition meaningful breadth beyond virus scanning, although the suite is for Windows rather than a multi-platform household.

Key features

• Firewall controls: The firewall can block unauthorized inbound and outbound connections, restrict internet access by program, and stealth ports. That level of control is valuable for users who want to manage network access; it also makes this more involved than a set-and-forget antivirus utility.
• Secure Shopping: An isolated browser session includes keylogger prevention, screen-capture blocking, and SSL certificate inspection. It can also isolate applications such as email clients, spreadsheets, password managers, FTP clients, and VPN clients, extending the feature beyond shopping. Users who want these applications in a protected environment may find it useful; it is not a substitute for support across other operating systems.
• Offline scans and quarantine: Offline scan modes, threat quarantine, and bootable rescue media support a response when a Windows PC needs attention. Remediation automation is manual, so users may need to take action rather than rely on automatic cleanup.
• Web filtering: Dangerous websites can be blocked, and custom lists can be set for family members. This is relevant to households that want site-level controls, but the product remains Windows-only.

Pricing

The freemium model starts with Comodo Internet Security Premium at no cost for core security features on a Windows PC. That is the strongest fit for users seeking antivirus, firewall, and sandbox protections without a subscription; it does not include the paid plans’ GeekBuddy support or virus-free guarantee.

Premium is also named as a plan with antivirus, firewall, and security features and updates, but no price is given for that plan. For a paid option, Comodo Internet Security Pro (1 device) costs $29.99 a year, billed $29.99 for 12 months, and covers one device. The 3-device Pro plan costs $39.99 a year, billed $39.99 for 12 months, and suits households or users with several PCs. Pro adds GeekBuddy expert support and a virus-free guarantee that covers repair costs up to $500 if Comodo support cannot restore an infected PC.

A separate Pro plan is priced at $39.99 a year, billed annually, with GeekBuddy support and the virus-free guarantee. Complete costs $89.99 a year, billed annually, and adds 50GB online storage and 10GB/month of TrustConnect. Complete is for buyers who want those services alongside security; the free edition and Pro plans do not include them in the stated plan features.

Platforms

Comodo Internet Security supports Windows. The guide names Windows 10, Windows 8, and Windows 7; CIS 12.0.0.6882 and later does not support Windows XP or Vista. For Windows 10, the stated requirements include 384 MB available RAM, 210 MB of disk space, an SSE2-capable CPU, and Internet Explorer 5.1 or later. Check compatibility before choosing it for an older PC.

Who it's for

This is a reasonable choice for Windows users who want a free security suite with more than antivirus scanning, especially those who value program-level firewall controls, unknown-file isolation, and custom website blocks. Pro makes more sense when expert support and the repair-cost guarantee justify paying; the multi-device Pro option is the better fit for three Windows devices. People using macOS, Linux, or mobile systems should look elsewhere, as should those who need supported Windows XP or Vista protection.

Pros and cons

• Pro: The free edition includes core security features for a Windows PC, so firewall and file-isolation tools are available without a paid plan.
• Pro: Secure Shopping combines browser isolation with keylogger prevention, screen-capture blocking, and certificate inspection.
• Pro: Firewall rules can control both network connections and individual programs, while website filtering supports custom family block lists.
• Con: Windows support is limited to Windows 10, 8, and 7 in the guide, excluding XP and Vista on current versions.
• Con: Remediation is manual, which leaves users with more responsibility when responding to threats.
• Con: Some plan names and paid offerings overlap, so buyers should match the device count and included services to their needs before paying.

Alternatives

For an endpoint-security choice with a free trial and support for Android, iOS, macOS, web, Windows, API, and self-hosted environments, consider WatchGuard FireCloud. Its 1–50 license plan is $97.75 a year, billed per user license, making it a paid option rather than a free-suite substitute.

ZoneAlarm Extreme Security NextGen is another paid alternative, with support for Android, iOS, macOS, and Windows and a five-device plan.

For broader software comparisons, browse Antivirus software, Firewall Management Software, or Malware Removal Software.

Verdict

Choose Comodo Internet Security if you want a no-cost Windows suite that combines antivirus with configurable firewall controls, automatic isolation, and protected browsing. Its strongest reason to choose it is the range of core protections in the free edition; look elsewhere if you need broader operating-system support or automated remediation.