Comodo Internet Security vs IObit Malware Fighter (2026): which should you pick?
As of Nov 13, 2026, Comodo Internet Security grades higher than IObit Malware Fighter: 2.6 against 2.4 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Comodo Internet Security grades higher on value for money. They get the same grade on the free plan, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Comodo Internet Security
Windows antivirus and firewall that sandboxes unknown files
IObit Malware Fighter
Windows anti-malware with a free edition and a paid Pro edition
Which one is for you
Pick Comodo Internet Security if
- 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
Look elsewhere if
- 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
Pick IObit Malware Fighter if
- Fits if you want a free Windows scanner you can upgrade later
- Works for one to three PCs on a low yearly price
Look elsewhere if
- Skip it if you use a Mac or a phone, as only Windows is covered
- Not for you if you want ransomware defence without paying, because it is a Pro feature
- Watch out: Pro prices are shown as 50% to 56% off with no end date, and no renewal price is stated
- Tight if you have more than 3 PCs: Pro is sold for 1, 2 or 3 only
How we grade them
| 2.6GPAComodo Internet SecurityGood | 2.4GPAIObit Malware FighterFair | |
|---|---|---|
| Value for money | AA free edition exists, and Complete is $29.99 a year, about $2.50 a month, against $4.50 for the middle of antivirus tools. | BPro is $19.95 a year for 1 PC, about $1.66 a month, inside the cheapest quarter, and the free edition costs nothing. The sale price has no end date shown and no renewal price is given. |
| Free plan and trial | BA free Internet Security edition for Windows with no time limit on record, though Complete adds more. | BA free edition with basic antivirus and basic real-time protection, with a smaller malware database than Pro. |
| Features | CAntivirus and spyware scanning, an auto sandbox, a firewall, secure shopping and online backup. The pages look dated and cite Windows 10, 8 and 7. | CScanning and real-time protection, with ransomware defence and scam blocking in Pro only. The free edition is a basic one. |
| Ease of use | BNo store rating on record. You install it and it runs, with nothing to set up. | BNo store rating on record, but it is a Windows program you install and run with little setup. |
| Platforms and integrations | DWindows only, with no Mac, phone or Linux version listed. | DWindows only: the page lists Windows 11, 10, 8 and 7 and no Mac or phone app. |
| Best for | free Windows antivirus with a firewall | Windows PCs that want a free scanner with a paid upgrade |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Comodo Internet Security and IObit Malware Fighter. How we grade
Where they differ
- Comodo Internet Security also covers file sync.
- IObit Malware Fighter also covers ad and tracker blocking.
At a glance
| Comodo Internet Security | IObit Malware Fighter | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | Free edition; paid Complete edition $29.99 per year for 1 PC | $19.95 per year for 1 PC (sale price shown, $39.95 crossed out; renewal price not stated) |
| Free plan | A free Comodo Internet Security edition is offered for Windows. | IObit Malware Fighter 14 Free: basic antivirus protection, quick threat detection, basic privacy protection and basic real-time protection. |
| Free trial | None listed | None listed |
| Windows | ||
| Made by | Comodo | IObit |
| Price read from | comodo.com | iobit.com |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Comodo Internet Security
- 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.
IObit Malware Fighter
- Windows only: the product page lists Windows 11, 10, 8 and 7 and no Mac version.
- The Pro prices on the page are shown as discounts of 50% to 56% with no end date, and no renewal price is stated.
- Pro licenses are sold for 1, 2 or 3 PCs only; no larger tier is shown.
- The vendor offers a 60-day money-back guarantee on Pro.
Key features
Comodo Internet Security
- 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.
IObit Malware Fighter
- Malware scanning
- Smart Scan checks critical areas, Full Scan covers all disks, and Custom Scan checks a file or folder you pick.
- Ransomware defense
- On Pro, Ransomware Shield watches for unauthorized file encryption and SafeBox password-protects chosen documents.
- Web and download protection
- Surfing Protection blocks phishing and fake sites, and Download Protection scans downloaded files and email attachments.
- Privacy tools
- Anti-Tracking clears tracking cookies, Homepage Advisor flags changes to your homepage and search engine, and Browser Password Guard protects stored browser passwords.
- Bitdefender engine on Pro
- Pro adds the Bitdefender antivirus engine to IObit's own, and the page lists a larger malware database than the free edition.
- AI Script Guard
- New in version 14: the vendor says it predicts and stops suspicious script activity, including from AI agents.
Plans
Comodo Internet Security
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.
IObit Malware Fighter
Free$0
Basic antivirus and basic real-time protection, with a smaller malware database than Pro.
Pro, 1 PC$19.95
per year for 1 PC, sale price shown, renewal price not stated
Pro with Bitdefender real-time protection, ransomware defense and scam blocking. Shown as 50% off a crossed-out $39.95 with no end date on the page.
Pro, 2 PCs$22.95
per year for 2 PCs, sale price shown, renewal price not stated
Same Pro features for 2 PCs, shown as 51% off a crossed-out $46.95; adds sharing with family members.
Pro, 3 PCs$23.99
per year for 3 PCs, sale price shown, renewal price not stated
Same Pro features for 3 PCs, shown as 56% off a crossed-out $54.95.
Common questions
Which is cheaper, Comodo Internet Security or IObit Malware Fighter?
As of Nov 13, 2026, Comodo Internet Security starts at Free edition; paid Complete edition $29.99 per year for 1 PC, and IObit Malware Fighter starts at $19.95 per year for 1 PC (sale price shown, $39.95 crossed out; renewal price not stated).
Which has a free plan, Comodo Internet Security or IObit Malware Fighter?
As of Nov 13, 2026, both Comodo Internet Security and IObit Malware Fighter have a free plan.
More comparisons
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- IObit Malware Fighter vs Avira
- IObit Malware Fighter vs Zemana AntiMalware
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.