The Comodo Internet Security Insider’s Guide
Everything we know about Comodo Internet Security in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Comodo Internet Security
The Insider’s Guide
Windows antivirus and firewall that sandboxes unknown files
Every plan, grade, refund rule and rival among antivirus apps, read from Comodo Internet Security’s own pages.
Made by Comodo · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Comodo Internet Security’s own pages, its app-store listings and our grades. Every fact in it is on Comodo Internet Security’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.6
GPA, above 41 of the 56 other antivirus apps we grade
Comodo Internet Security is a consumer security suite for Windows that combines an antivirus scanner, a firewall and an auto sandbox that runs unknown files in an isolated environment. A free edition and a paid Complete edition are listed. Comodo's main site now leads with website security and business products, and its consumer pages look older than the rest of the site.
To get you started, here are 9 things to know about Comodo Internet Security, taken from its own pages and our grades.
You install it and it runs, with nothing to set up.
- 1
Best for free Windows antivirus with a firewall
Comodo offers a free Internet Security edition for Windows and a $29.99-a-year Complete one.
- 2
What it costs
Paid plans start at Free edition; paid Complete edition $29.99 per year for 1 PC.
- 3
There is a free plan
A free Comodo Internet Security edition is offered for Windows.
- 4
It runs on Windows
Windows.
- 5
Antivirus and spyware scanning
Scans for existing malware and spyware in the registry and on disks.
- 6
Auto sandbox
Unknown files can only run in a virtual environment, so they cannot change Windows or user data.
- 7
Firewall
A two-way firewall with a memory firewall to block software that tries to hijack other processes.
- 8
A 2.6 GPA, above 41 of 56
That is against the other antivirus apps we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace Comodo Internet Security you would be making an engine that recognises new malware as it appears. That is not a weekend's work, with an AI app builder or without one.
Comodo Internet Security at a glance
- Pricing
- Free plan, from Free edition; paid Complete edition $29.99 per year for 1 PC
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Windows
- Made by
- Comodo
- Category
- Antivirus & Malware Protection
- Our grade
- 2.6 GPA, good
The report card
Best for free Windows antivirus with a firewall
Comodo offers a free Internet Security edition for Windows and a $29.99-a-year Complete one. The consumer pages mention Windows 10, 8 and 7 and look dated, and the homepage leads with business products.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | A free edition exists, and Complete is $29.99 a year, about $2.50 a month, against $4.50 for the middle of antivirus tools. |
| Free plan and trial | B | A free Internet Security edition for Windows with no time limit on record, though Complete adds more. |
| Features | C | Antivirus and spyware scanning, an auto sandbox, a firewall, secure shopping and online backup. The pages look dated and cite Windows 10, 8 and 7. |
| Ease of use | B | No store rating on record. You install it and it runs, with nothing to set up. |
| Platforms and integrations | D | Windows only, with no Mac, phone or Linux version listed. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Comodo Internet Security is for
- Fits if you want a free antivirus and firewall on a Windows PC
- Works for a home user who wants a sandbox for unknown files
Who it is not for
- Skip it if you use a Mac, phone or Linux, as it's Windows only
- Watch out: the pages list Windows 10, 8 and 7 and look dated, so check current support before buying
- Watch out: the homepage leads with website and enterprise products, with consumer security further down
- Watch out: the virus-free guarantee covers up to $500 in repair costs for US customers only
Good to know
Good for
- Windows users who want a sandbox-based approach alongside a free edition
- Households that need three licenses at a low yearly price
Worth knowing
- The consumer pages list compatibility with Windows 10, 8 and 7 and appear dated; check current support before buying.
- Comodo's homepage lists Antivirus, Firewall and Internet Security under Consumer Security but leads with website and enterprise products.
- The page says the virus-free guarantee covers up to $500 in repair costs for US customers.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$29.99/yr
To start. There is a free plan too
Comodo Internet Security has a free plan. Paid plans start at Free edition; paid Complete edition $29.99 per year for 1 PC.
A free Internet Security edition for Windows with no time limit on record, though Complete adds more.
Free Internet Security
$0
The free Windows edition of Comodo Internet Security.
Internet Security Complete
$29.99
per year for 1 PC
Antivirus, firewall, auto sandbox, 50GB of online backup and a virus-free guarantee. Three licenses cost $39.99 a year.
The free plan
A free Comodo Internet Security edition is offered for Windows.
Read from comodo.com on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Windows
Windows antivirus and firewall that sandboxes unknown files. Here is what it does, as its own site describes it, and what it covers: file sync, malware protection.
Antivirus and spyware scanning, an auto sandbox, a firewall, secure shopping and online backup.
- Antivirus and spyware scanning
- Scans for existing malware and spyware in the registry and on disks.
- Auto sandbox
- Unknown files can only run in a virtual environment, so they cannot change Windows or user data.
- Firewall
- A two-way firewall with a memory firewall to block software that tries to hijack other processes.
- Secure shopping
- Runs the browser inside a secure container for banking and shopping.
- Online backup
- Complete includes 50GB of backup space, with upgrades available.
Where it runs
- Windows
What it works with
Its own pages name no integrations.
Comodo Internet Security is made by Comodo.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
41/56
Other antivirus apps it is graded above
Comodo Internet Security's GPA of 2.6 is higher than 41 of the 56 other antivirus apps we grade, and level with 8.
It stands best on value for money (A, above 54 of 56) and worst on platforms and integrations (D, above 0).
Each grade against the category
Every bar is all 57 antivirus apps we grade, cut by the letter each got. Comodo Internet Security’s own letter is outlined.
- AValue for moneyAbove 54 of 56
- BFree plan and trialAbove 47 of 56
- CFeaturesAbove 7 of 56
- BEase of useAbove 23 of 56
- DPlatforms and integrationsAbove 0 of 56
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace Comodo Internet Security you would be making an engine that recognises new malware as it appears. That is not a weekend's work, with an AI app builder or without one.
It is one of the better ones too: its GPA of 2.6 is higher than 41 of the 56 other antivirus apps we grade.
What you could not
- An engine that recognises new malware as it appears.
- Files kept in step across devices without losing one.
- A real app for Windows. Something home-made would be a web page.
What this rests on. Comodo Internet Security’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Avast, AVG, Avira, Malwarebytes and Sophos Home
The 5 tools Comodo Internet Security is most often weighed against, with where each one differs from it.
- 3.0GPA
Avast
Free plan · from $77.99/yr
Free antivirus for PC, Mac and phones, with paid Premium and Ultimate.
- Only Avast lists macOS, Android and iOS apps.
- Only Avast lists a browser extension.
- Comodo Internet Security also covers file sync.
- 2.8GPA
AVG
Free plan · from $79.99/yr
Free antivirus for Windows, with paid Internet Security and Ultimate.
- Only AVG lists macOS, Android and iOS apps.
- Only AVG lists a browser extension.
- Comodo Internet Security also covers file sync.
- 2.4GPA
Avira
Free plan
Free antivirus suite with a VPN, PC cleaner and password manager.
- Only Avira lists Android and iOS apps.
- Comodo Internet Security also covers file sync.
- Avira also covers password manager, vPN and ad and tracker blocking.
- 2.2GPA
Malwarebytes
Free plan · from $59.99/yr
Malware scanner and real-time protection, with VPN and ID plans.
- Only Malwarebytes lists macOS, Android and iOS apps.
- Only Malwarebytes lists a browser extension.
- Comodo Internet Security also covers file sync.
- 2.4GPA
Sophos Home
Free trial · from $59.99/yr
Business-grade antivirus for up to 10 Windows PCs and Macs.
- Comodo Internet Security has a free plan. Sophos Home does not, though it has a free trial.
- Only Sophos Home lists macOS, Android and iOS apps.
- Comodo Internet Security also covers file sync.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
10
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Comodo Internet Security free?
Comodo Internet Security has a free plan. A free Comodo Internet Security edition is offered for Windows.
How much does Comodo Internet Security cost?
Comodo Internet Security lists 2 plans. Free Internet Security: $0.
What platforms does Comodo Internet Security work on?
Comodo Internet Security is available on Windows.
Does Comodo Internet Security have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. Comodo Internet Security is listed for Windows.
Does Comodo Internet Security have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. Comodo Internet Security is listed for Windows.
Is Comodo Internet Security open source?
Comodo Internet Security is not described as open source on its own site, as read on Nov 12, 2026.
Who makes Comodo Internet Security?
Comodo Internet Security is made by Comodo.
What are the alternatives to Comodo Internet Security?
The closest alternatives to Comodo Internet Security in our directory are Avast, AVG, Avira, Malwarebytes and Sophos Home.
How does Comodo Internet Security compare with other antivirus apps?
Comodo Internet Security's GPA of 2.6 is higher than 41 of the 56 other antivirus apps we grade, and level with 8.
Could I make my own version of Comodo Internet Security?
To replace Comodo Internet Security you would be making an engine that recognises new malware as it appears.
Where this guide comes from
The prices, plans, platforms and features were read from Comodo Internet Security’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from Comodo's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Comodo. Prices change, so check comodo.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Comodo Internet Security, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/comodo-antivirus
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Comodo Internet Security: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/comodo-antivirus
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See our other guides
The best-graded antivirus apps after Comodo Internet Security, each with an Insider's Guide of its own.
- Antivirus & Malware Protection Insider's GuideEvery one of the 57 antivirus apps we grade, compared
- Avast Insider's GuideFree antivirus for PC, Mac and phones, with paid Premium and Ultimate3.0 GPA
- AVG Insider's GuideFree antivirus for Windows, with paid Internet Security and Ultimate2.8 GPA
- Bitdefender Insider's GuideAntivirus suites for computers and phones, with a free Windows tier2.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Comodo Internet Security’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Comodo Internet Security is a trademark of its owner, and this guide is not made, paid for or approved by Comodo. Prices and plans change: check comodo.com before you buy.