Bitdefender Total Security or Windows Security?

Do you need Bitdefender Total Security or is Windows Security enough? The protection built into Windows 10 and 11 with Microsoft Defender Antivirus, firewall and SmartScreen is free, active immediately and achieved the maximum score for protection in the test by the AV-TEST institute from July and August 2026. For a single Windows PC used with care, it is sufficient. Bitdefender Total Security is worthwhile if you also want to protect Mac, Android and iPhone or need the additional features: password manager, protected browser for banking, webcam protection and a small VPN allowance.

Quick decision

Your situation	Recommendation
One Windows PC, updates run automatically, you already use a password manager	Windows Security is enough
Family with a Windows PC, Mac, Android phones and iPhones	Bitdefender Total Security covers all four platforms
Children are to get time limits and content filters, across devices	not with our offer: Bitdefender provides parental controls only in the “Family” plan, which we do not carry
You want to do online banking in an isolated browser	Bitdefender Total Security (Safepay)
You are looking for a VPN for daily streaming	neither of the two; the included VPN is limited to 200 MB per day
Company network with central management	neither; there are business solutions for that

What Windows Security already includes

Windows Security is the app in which Windows 10 and 11 bundle their protection features. It is part of the operating system and cannot be uninstalled.

Area of the app	Content
Virus & threat protection	Microsoft Defender Antivirus with real-time protection, manual and quick scan, ransomware protection with controlled folder access
Account protection	settings for sign-in and account
Firewall & network protection	Windows Firewall for inbound and outbound connections
App & browser control	SmartScreen and exploit protection; on Windows 11 additionally Smart App Control
Device security	protection features built into the hardware
Device performance & health	notes on drivers, storage space and Windows Update
Family options	access to Microsoft’s family safety features

The protection is built into Windows, active from the first start and costs nothing extra.

What Bitdefender Total Security adds

According to the vendor, Bitdefender Total Security includes:

Area	Features according to Bitdefender
Platforms	Windows, macOS, Android, iOS
Malware	real-time protection, behavior-based detection (Advanced Threat Defense), multi-layer ransomware protection, rescue environment for persistent malware
Network and web	network attack defense, web filter, phishing and fraud protection, firewall, Wi-Fi security advisor
Email	spam filter for local mail programs such as Outlook and Thunderbird
Privacy	VPN with 200 MB per day and device, password manager, anti-tracker, webcam protection, microphone monitor
Banking	Safepay, an isolated browser for payments
Family	parental controls with content filter, time limits and location display, but only in the “Family” plan
Device	anti-theft for Windows notebooks and tablets, vulnerability scan, file shredder, one-click optimization

Bitdefender lists data breach detection only for Android and iOS. The vendor’s site currently shows two plans: “Individual” (1 account, 5 devices) and “Family” (5 accounts, 25 devices). According to Bitdefender, parental controls are available only as part of the family subscription. We do not carry the “Family” plan; our variants therefore do not include parental controls. What counts for your purchase is the number of devices and the term on the product page.

Direct comparison

Feature	Windows Security	Bitdefender Total Security
Cost	included in Windows	subscription per term and number of devices
Real-time virus protection	Yes	Yes
Ransomware protection	Yes (controlled folder access)	Yes (multi-layer)
Firewall	Yes	Yes
Protection against phishing and malicious sites	Yes (SmartScreen)	Yes (web filter, fraud protection)
Protection for macOS, Android, iOS	No	Yes
Password manager	No	Yes
VPN	No	200 MB per day and device
Parental controls	access through Family options	only in the “Family” plan, which we do not carry
Isolated browser for banking	No	Yes (Safepay)
Webcam and microphone protection	No	Yes
Spam filter for local mail programs	No	Yes
Account with the vendor required	No	Yes (Bitdefender Central)

“No” in the left column means: not part of the Windows Security app. According to Microsoft, subscribers to Microsoft 365 Family or Personal additionally receive the Microsoft Defender app for Windows, Mac, iOS and Android.

What independent tests say

According to its own information, the AV-TEST institute tested 15 protection programs for private Windows users with default settings in July and August 2026. At most 6 points are possible per category, 18 in total.

Product	Protection	Performance	Usability
Bitdefender Total Security 27.0	6	6	6
Microsoft Defender Antivirus (Consumer) 4.18	6	5.5	6

Both reach the threshold of 17.5 points from which AV-TEST awards a product the “Top Product” rating. The difference is half a point in performance, i.e. in the impact on system speed. This is a snapshot from one test period; the values change from test to test. The decision therefore depends less on detection performance than on the feature set.

Do both run at the same time?

No, and that is intentional. If you install another antivirus program on Windows 10 or 11, Microsoft Defender Antivirus switches itself off automatically, according to Microsoft. Two real-time scanners therefore do not work against each other. The Windows Security app remains and shows the status of the installed program. If you uninstall Bitdefender or the subscription expires, you should check in Windows Security whether the built-in protection is active again.

System requirements of Bitdefender

Platform	Requirement according to Bitdefender
Windows	Windows 7 with Service Pack 1, 8.1, 10 or 11; 2 GB of memory; 2.5 GB of free disk space
macOS	macOS Big Sur (11.3) or later; 1 GB of free disk space
Android	Android 7 or later
iOS	iOS 14 or later

Typical cases

Single Windows 11 PC in a home office. Windows Update is running, you do not open unknown attachments and you back up your data regularly. Windows Security is enough. Rather invest the time in a backup and a password manager.

Family with five devices on four platforms. The built-in protection covers only the Windows computers. With Bitdefender Total Security you also protect the Mac, Android phone and iPhone and manage all devices in one account. Parental controls are not part of it; they are reserved for the “Family” plan.

Older computer with Windows 7 or 8.1. Bitdefender still supports these systems. That does not solve the actual problem: Windows itself no longer receives security updates there. The more sensible step is to switch to a supported Windows; see
Windows 10 end of support: what to do.

Small office with 8 PCs. Total Security is a product for private households. For an office, central management and reporting are what count; there are separate business products for that, at Microsoft for example Defender for Endpoint.

What no protection program replaces

Updates. Keep Windows, browsers and programs up to date. Whether your PC meets the requirements for Windows 11 is shown in Windows 11 system requirements.
Backup. A copy on a separate drive helps against ransomware and hard disk damage.
Caution with attachments and links. As typical routes for ransomware, Microsoft names unexpected file attachments, links in emails and messages, and fake websites.
Software from a reputable source. What to look out for when buying product keys is covered in the guide Recognizing reputable key shops.

At VivaKeys

You receive Bitdefender Total Security from us as an activation code for a selected number of devices and term. You redeem the code in your Bitdefender Central account: sign in, open “My Subscriptions”, select “Activate with code” and enter the code. More protection programs are in the
Antivirus & Security category.

If you prefer to stay with the built-in protection, you do not need to buy anything. You will find the other guides on servers and development through the overview
Licensing SQL Server: per core or server + CAL.

Frequently asked questions

What does Bitdefender Total Security include? Virus protection for Windows, macOS, Android and iOS, plus firewall, ransomware protection, phishing protection, password manager, the banking browser Safepay, webcam protection and a VPN with 200 MB per day and device. Parental controls are available only in the “Family” plan, which we do not carry.

Is the built-in virus protection of Windows 11 enough? For a single PC used with care, yes. In the AV-TEST test from July and August 2026, Microsoft Defender Antivirus achieved 6 out of 6 points for protection.

Do I have to turn off Windows Defender before I install Bitdefender? No. Microsoft Defender Antivirus switches itself off automatically as soon as another antivirus program is installed.

Is the VPN in Bitdefender Total Security unlimited? No. It includes 200 MB of encrypted traffic per day and device. That is enough for banking on hotel Wi-Fi, not for videos.

For how many devices is Bitdefender Total Security valid? That depends on the variant you buy. You select the number of devices and the term on the
product page.

How do I activate Bitdefender Total Security? Sign in at central.bitdefender.com or create an account. Under “My Subscriptions”, select activation with a code and enter the activation code.

Does Bitdefender slow down the PC? In the AV-TEST test mentioned, Bitdefender Total Security received 6 out of 6 points for performance, Microsoft Defender Antivirus 5.5.

Sources

Checked on 2026-11-10 against the publisher’s information:

Windows Security or Bitdefender Total Security?