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Comodo Internet Security

comodo.com

Free plan WindowsiOSAndroidBrowser extension
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Spec score 9.3 #1 of 30 in Computer Security

What it is

Comodo Internet Security is a Windows security suite that combines antivirus protection, a packet-filtering firewall, host intrusion prevention, and automatic isolation for unknown files. Its Auto Sandbox runs unfamiliar files in a separate environment. The firewall can block unauthorized inbound and outbound connections, manage which programs can access the internet, and hide computer ports. Secure Shopping isolates browser sessions and includes keylogger prevention, screen-capture blocking, and SSL certificate inspection; it can also run applications such as email clients, password managers, spreadsheets, and VPN clients in that environment. The product describes cloud antivirus scanning, behavior analysis, and whitelisting, alongside malicious-website filtering with custom block lists. Comodo lists a free plan and paid plans from $29.99/yr. Its guide lists Windows 10, 8, and 7, and says versions 12.0.0.6882 and later do not support Windows XP or Vista. Support resources include Comodo Support, an online help guide, and a user forum.

Spec sheet

What it does
Comodo Internet Security combines antivirus, packet-filtering firewall, host intrusion prevention and automatic sandboxing for layered computer protection.Read 14 Oct 2026 · comodo.com
Purpose
Comodo Internet Security combines antivirus protection, a packet-filtering firewall, host intrusion prevention, and automatic sandboxing of unknown files.Read 28 Sep 2026 · comodo.com
Free plan
YesRead 20 Sep 2026 · comodo.com
Paid from
29.99Read 20 Sep 2026 · comodo.com
Support
The product page directs users to submit technical questions through Comodo Support and links to an online help guide and user forum.Read 28 Sep 2026 · comodo.com
Headquarters
Bloomfield, New Jersey, United StatesRead 28 Sep 2026 · comodo.com
Founded
1998Read 28 Sep 2026 · comodo.com
Android features
The Android app advertises real-time and scheduled scans, phishing and Wi-Fi checks, VPN, mobile firewall, app lock and identity-theft monitoring.Read 14 Oct 2026 · play.google.com
Anti-rootkit
The anti-rootkit scanner looks for and removes rootkits.Read 14 Oct 2026 · comodo.com
Anti-spyware
The anti-spyware module detects and removes spyware infections.Read 14 Oct 2026 · comodo.com
Antivirus
The antivirus component searches for and removes existing malware.Read 14 Oct 2026 · comodo.com
Auto sandbox
Unknown programs can be run in an isolated environment separated from the main system.Read 14 Oct 2026 · comodo.com
Behavior analysis
Cloud behavior analysis is marketed for detecting previously unseen zero-day malware.Read 14 Oct 2026 · comodo.com
Bot protection
Bot protection is intended to stop malware from enrolling the computer in a botnet.Read 14 Oct 2026 · comodo.com
Cloud features
The product page describes cloud antivirus scanning, cloud-based behavior analysis, and cloud-based whitelisting.Read 28 Sep 2026 · comodo.com
Cloud scanning
Cloud antivirus can identify malicious files even when local virus definitions are out of date.Read 14 Oct 2026 · comodo.com
Company facts
LinkedIn describes Comodo Security Solutions as privately held, founded in 2005, headquartered in Iasi, Romania, with 51–200 employees.Read 14 Oct 2026 · linkedin.com
Company footprint
LinkedIn says Comodo reports more than 55 million endpoint installations and offices in the United States, United Kingdom, China, India, Romania and Ukraine.Read 14 Oct 2026 · linkedin.com
Defense+
Defense+ protects critical system files and blocks malware before installation.Read 14 Oct 2026 · comodo.com
Developer APIs
The maker site links separate Valkyrie developer pages for APIs and plugins, but does not document a public Comodo Internet Security API or SDK on the product page.Read 14 Oct 2026 · comodo.com
Firewall
The firewall can block unauthorized inbound and outbound connections, control which programs access the internet, and stealth computer ports.Read 28 Sep 2026 · comodo.com
Firewall controls
The firewall can block inbound and outbound connections, hide ports, set per-application rules and keep activity logs.Read 14 Oct 2026 · comodo.com
Installation dependency
Comodo advises removing other antivirus and firewall products before installing CIS to avoid conflicts.Read 14 Oct 2026 · help.comodo.com
iOS features
The iPhone app lists VPN, call blocking, file vault, identity-theft monitoring, Wi-Fi filtering and safe browsing.Read 14 Oct 2026 · apps.apple.com
Licence
The CIS EULA grants royalty-free commercial and personal use but retains ownership with Comodo, so CIS is proprietary rather than open source.Read 14 Oct 2026 · comodo.com
Limit: Android downloads
A Google Play reviewer praised the app but said it lacked a scanner for downloads before installation.Read 14 Oct 2026 · play.google.com
Limit: billing and refunds
Trustpilot complaints repeatedly allege unwanted renewals, refund delays and poor customer-service handling.Read 14 Oct 2026 · trustpilot.com
Limit: independent testing
TechRadar says AV-Comparatives had not tested Comodo and described its AV-Test result as unexceptional versus stronger competitors.Read 14 Oct 2026 · techradar.com
Limit: interface and installation
TrustRadius reviewers repeatedly describe the interface as difficult and installation as slow.Read 14 Oct 2026 · trustradius.com
Limit: Kill Switch vulnerability
On September 28, 2026 Comodo warned users not to use Kill Switch, removed affected CCE downloads and planned installers without the vulnerable component.Read 14 Oct 2026 · forums.comodo.com
Limit: support and containment
TrustRadius reviewers report weak support and difficult whitelisting, including false positives for common applications.Read 14 Oct 2026 · trustradius.com
Maker and founding
Comodo's company profile says it was established in 1998.Read 28 Sep 2026 · comodo.com
Memory firewall
The memory firewall is designed to defend against buffer-overflow attacks.Read 14 Oct 2026 · comodo.com
News: 2027 release
A July 23, 2026 forum announcement introduced CIS 2027 version 12.4.0.8170 with HIPS renamed EDR and fixes for update checks and installer naming.Read 14 Oct 2026 · forums.comodo.com
Operating system limit
The Comodo guide lists Windows 10, Windows 8, and Windows 7, and says CIS 12.0.0.6882 and later does not support Windows XP or Vista.Read 28 Sep 2026 · help.comodo.com
Other uses
Secure Shopping can also run applications such as Outlook, Thunderbird, Sage, password managers, Excel, FTP clients, and VPN clients inside its isolated environment.Read 28 Sep 2026 · comodo.com
Paid support features
The page says CIS Pro adds GeekBuddy support and a virus-free guarantee covering repair costs up to $500 if Comodo support cannot restore an infected PC.Read 28 Sep 2026 · comodo.com
Parental controls
YesRead 20 Sep 2026 · comodo.com
Praise: GetApp users
GetApp users rate activity tracking, alerts and application security highly, with 75% of reviews marked positive.Read 14 Oct 2026 · getapp.com
Praise: malware detection
TrustRadius reviewers repeatedly praise fast scanning, malware detection and extensive configuration options.Read 14 Oct 2026 · trustradius.com
Protection scope
complete securityRead 20 Sep 2026 · comodo.com
Rating on Apple App Store
3.1 out of 5 from 51 ratingsRead 14 Oct 2026 · apps.apple.com
Rating on GetApp
4.8 out of 5 from 4 reviewsRead 14 Oct 2026 · getapp.com
Rating on Google Play
3.7 out of 5 from 57.6K reviewsRead 14 Oct 2026 · play.google.com
Rating on TechRadar testing
AV-Test's August 2019 test gave Comodo 6/6 protection, 5.5/6 performance and 5.5/6 usability.Read 14 Oct 2026 · techradar.com
Rating on Trustpilot
1.2 out of 5 from 172 reviewsRead 14 Oct 2026 · trustpilot.com
Rating on TrustRadius
7.2 out of 10 from 23 reviewsRead 14 Oct 2026 · trustradius.com
Secure shopping
Secure Shopping isolates browser sessions and includes keylogger, screenshot, remote-takeover and fake-certificate protections.Read 14 Oct 2026 · comodo.com
Support and documentation
Comodo provides ticket support, an online help guide and a user forum for product questions.Read 14 Oct 2026 · comodo.com
Supported platforms
WindowsRead 20 Sep 2026 · comodo.com
System requirements
The published CIS 12.2 guide lists Windows 10, Windows 8/8.1 and Windows IoT, with 512 MB RAM, 1 GB disk space, SSE2 CPU and Internet Explorer 11 or later.Read 14 Oct 2026 · help.comodo.com
Unknown file isolation
Auto Sandbox runs unknown files in an isolated environment so they cannot damage the computer.Read 28 Sep 2026 · comodo.com
Web filtering
Malicious Website Filtering blocks dangerous websites and supports custom block lists for family members.Read 28 Sep 2026 · comodo.com
Website filtering
Malicious-site filtering blocks dangerous websites and supports custom family block lists.Read 14 Oct 2026 · comodo.com

Plans and prices

Premium Price not published Antivirus · Firewall · Security features and updates Read 20 Sep 2026 · help.comodo.com
Pro $39.99 a year billed annually GeekBuddy expert support · Virus Free Guarantee Read 20 Sep 2026 · help.comodo.com
Complete $89.99 a year billed annually 50GB online storage · 10GB/month TrustConnect Read 20 Sep 2026 · help.comodo.com
Comodo Internet Security Premium Free Core security features; Windows PC Read 28 Sep 2026 · help.comodo.com
Comodo Internet Security Premium $29.99 a year $29.99 per year full security features · one PC Read 14 Oct 2026 · comodo.com
Comodo Internet Security Pro (1 device) $29.99 a year $29.99 for 12 months 1 device Read 28 Sep 2026 · accounts.comodo.com
Comodo Internet Security Pro $39.99 a year $39.99 per year three licenses · GeekBuddy support · $500 virus-free guarantee Read 14 Oct 2026 · comodo.com
Comodo Internet Security Pro (3 devices) $39.99 a year $39.99 for 12 months 3 devices Read 28 Sep 2026 · accounts.comodo.com

Every Comodo Internet Security plan and price →

Strong points and limits

Strong points

  • Automatically isolates unknown files.
  • Firewall controls inbound, outbound, and program connections.
  • Secure Shopping includes keylogger and screen-capture protections.
  • Free plan covers core security features.

Limits

  • Available for Windows only.
  • Windows XP and Vista are unsupported by newer versions.
  • Paid plans start at $29.99/yr.

Who it suits

It suits Windows users looking for antivirus, firewall, and file-isolation features in one product. Families may also find the custom website block lists relevant.

Verdict

Comodo combines several security functions, including file sandboxing, firewall controls, and an isolated shopping session. Check the Windows version limits and plan details before choosing it.

Where Specifiction places it

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