Bitdefender vs Kaspersky: Lab Test Results and Full Comparison
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Bitdefender and Kaspersky are widely regarded as two of the most technically capable antivirus engines in the world. Both consistently earn top scores from every major independent testing lab. On raw detection capability, the margin between them is razor-thin. This comparison examines the lab data, feature differences, and the geopolitical concerns that influence many buyers' decisions.
📊 How We Compared
Every product here was compared on vendor documentation, published pricing, and documented specifications, with published independent lab results referenced where the category has them.
Editor’s take: Both engines sit near the top of the published lab tables, so detection is not what separates them. Kaspersky's difficulty is jurisdiction and procurement policy rather than technology — many corporate buyers simply cannot deploy it. For that reason alone, Bitdefender is the safer default.
Editor's Take
On published detection numbers these two are close enough that the lab scores will not make your decision for you. What actually separates them for most buyers is trust posture — where the vendor is headquartered, who audits it, and whether your own threat model cares. If the numbers are a tie, buy on governance and system impact rather than on percentage points.
AV-Test Institute Results
The AV-Test Institute in Germany evaluates antivirus products across three categories: protection, performance, and usability. Each category carries a maximum of 6 points, for a total of 18 points.
In AV-TEST's June 2026 Windows 11 round, both Bitdefender and Kaspersky scored 6/6 in all three categories — protection, performance and usability — for the maximum 18/18. One caveat worth knowing: AV-TEST's scale saturates at the top. Eight of the sixteen products in that round earned a perfect 18, so a 6/6 certifies competence rather than separating the leaders. Where these two actually differ is the AV-Comparatives result below.
AV-Comparatives Results
AV-Comparatives runs several test categories throughout the year. In the Real-World Protection Test, which simulates actual browsing encounters with malware, Bitdefender blocked 99.5% of threats. Kaspersky blocked 99.8%, with both products earning the highest ADVANCED+ rating.
In the False Alarm Test (AV-Comparatives, February–May 2026), Kaspersky produced 3 false positives and Bitdefender produced 5 — both low in absolute terms, and a difference small enough that it is unlikely to matter in daily use. In the Performance Test, which measures system impact during daily tasks, both products scored in the top tier, but Bitdefender had a slight edge with a 3% system slowdown compared to Kaspersky's 5%.
SE Labs Results
SE Labs takes a different testing approach, using real-world attack scenarios and grading products on their ability to detect, block, and neutralize threats. Both Bitdefender and Kaspersky earned the AAA rating, which is SE Labs' highest distinction.
SE Labs' endpoint testing has rated both products at its top AAA level in recent rounds; we could not verify the per-round percentages at the source, so we are not quoting them here. The difference between the two is small in practice, but Kaspersky's slightly faster detection in attack scenarios is notable.
Lab Score Summary
| Test Category | Bitdefender | Kaspersky | Winner |
|---|---|---|---|
| AV-Test Protection | 6/6 | 6/6 | Tie |
| AV-Test Performance | 6/6 | 6/6 | Tie |
| AV-Test Usability | 6/6 | 6/6 | Tie |
| AV-Comparatives Real-World | 99.5% blocked | 99.8% blocked | Kaspersky |
| AV-Comparatives False Alarms | 5 false positives | 3 false positives | Kaspersky |
| AV-Comparatives Performance | 3% slowdown | 5% slowdown | Bitdefender |
| SE Labs rating | AAA | AAA | Tie |
| SE Labs overall blocking | 97% outright | 98% outright | Kaspersky |
Feature Comparison
Bitdefender Total Security includes a ransomware shield, VPN (200MB/day on the free tier), password manager, parental controls, web filtering, and a webcam protection module. Its standout feature is the multi-layer ransomware defense that uses behavioral analysis to detect encryption activity before files are locked.
Kaspersky Internet Security offers similar protections, including its own ransomware defense, web camera protection, and payment protection for online banking. Kaspersky's Safe Money feature creates a secure browser environment for financial transactions, which is particularly well-implemented. Kaspersky also includes a free VPN with 200MB to 300MB daily depending on region.
Both products offer cross-platform support. Bitdefender covers Windows, macOS, Android, and iOS. Kaspersky covers the same platforms but with stronger macOS support through Kaspersky Internet Security for Mac, which includes a dedicated network attack blocker.
Pricing
Bitdefender Total Security costs $59.99 for the first year (5 devices) and renews at $109.99 annually. Outside the US, Kaspersky Internet Security costs $39.99 for the first year (3 devices) and renews at $79.99 per year; it is not available for purchase in the United States. Kaspersky's per-device pricing is slightly less favorable when you account for the lower device limit, but the renewal price is $10 cheaper.
Pricing note: the figures in this guide are the vendors' published list prices as of September 2026, with Bitdefender and Kaspersky figures re-checked on 23 October 2026. This page covers Bitdefender vs Kaspersky. Vendors change pricing without notice, so treat these numbers as a starting point and confirm current pricing with the vendor before you buy.
Bitdefender offers a 30-day free trial and a 30-day money-back guarantee. Kaspersky offers a 30-day free trial and a 30-day money-back guarantee in most regions. Both products allow you to test before committing.
Kaspersky Geopolitical Concerns
Important context — and the position has tightened since: In March 2022, the US Federal Communications Commission (FCC) added Kaspersky to its "Covered List" of communications equipment and services that pose an unacceptable risk to national security. That listing on its own did not ban consumer use. The restrictions then became considerably broader: in 2024 the US Department of Commerce's Bureau of Industry and Security (BIS) prohibited Kaspersky from entering into new covered agreements with US persons from 20 July 2024, and from 29 September 2024 prohibited it from providing antivirus signature and codebase updates or operating Kaspersky Security Network (KSN) on US systems. Kaspersky has stated that it stopped selling and distributing its cybersecurity products in the United States and began winding down its US operations.
What this means if you are in the United States: a new Kaspersky consumer subscription is not a lawful purchase, and existing US installations no longer receive the signature updates that keep an antivirus effective against new threats. Most US customers were migrated to UltraAV (Pango Group). This is not a government-only restriction — it covers consumer purchases and updates. The prohibitions include narrow exceptions for threat intelligence, training and advisory services, which do not cover consumer antivirus software.
Outside the United States the product continues to be sold and supported, and its independent lab results remain among the strongest published. Any pricing figure on this page therefore applies to regions where the product is still sold and is not a US price.
The concern stems from Kaspersky's Russian headquarters and the 2017 Russian law that requires companies to cooperate with the FSB (Russia's federal security service). Kaspersky has repeatedly denied any inappropriate relationship with the Russian government and has taken steps to address concerns, including moving its data processing infrastructure to Zurich, Switzerland, and opening Transparency Centers where independent parties can review source code.
Despite these measures, some users and organizations remain cautious. If you work in a regulated industry, handle sensitive government data, or simply prefer to avoid products with any geopolitical question marks, Bitdefender provides equivalent protection without the associated concerns. Kaspersky has also faced restrictions in the UK and several European countries.
For users outside the affected regions who are comfortable with Kaspersky's transparency measures, the product itself is technically excellent. The geopolitical question is a personal decision that depends on your risk tolerance and professional context.
Bitdefender vs Kaspersky: pros and cons
Bitdefender Pros
- No geopolitical concerns
- Lower system impact (3% vs 5%)
- Slightly higher real-world detection
- Slightly higher real-world detection
- Clean, minimal interface
- Strong ransomware protection
- 5-device license standard
Bitdefender Cons
- Occasional false positives reported in published lab rounds
- VPN limited to 200MB/day on free tier
- Settings can be overwhelming for beginners
- Higher renewal price than Kaspersky
Kaspersky Pros
- 3 false positives in AV-Comparatives' February–May 2026 round
- Excellent Safe Money banking protection
- Strong macOS support
- Slightly faster attack blocking (SE Labs)
- Lower renewal price
Kaspersky Cons
- US FCC Covered List inclusion
- Restrictions in some countries
- Heavier system impact than Bitdefender
- Only 3 devices on standard plan
- Perception risk for some organizations
Bitdefender vs Kaspersky pricing
Bitdefender starts at $39.99/yr for the first year, covering 5 devices. After the first year, it renews at $109.99/yr. Outside the US, Kaspersky starts at $39.99/yr for 3 devices, renewing at $79.99/yr; it is not available for purchase in the United States.
Price alone does not tell the full story — consider what is included. Bitdefender includes 200MB/day (free); unlimited with Premium. Kaspersky includes 300MB/day (free).
Independent lab test results
| Test | Bitdefender | Kaspersky | Winner |
|---|---|---|---|
| AV-Test Protection (June 2026) | 6/6 | 6/6 | Tie |
| AV-Comparatives Detection | 99.5% | 99.8% | Bitdefender |
| System Impact | 3% | 5% | Bitdefender |
Who Should Choose Bitdefender
Best overall protection with lowest system impact. Its standout features include Ransomware behavioral shield, Time Machine protection (Mac).
Who Should Choose Kaspersky
Users in regions without geopolitical restrictions. Its standout features include Safe Money banking protection, 3 false positives in AV-Comparatives' February–May 2026 round. Geopolitical concerns restrict use in some markets
Verdict
On pure technical merit, Bitdefender and Kaspersky are nearly interchangeable. The lab scores are within a fraction of a percent of each other. If we set aside the geopolitical concerns, Kaspersky's slightly lower false-positive count (3 vs 5) and Safe Money feature give it a slight usability edge for some users.
However, the geopolitical reality cannot be ignored. Bitdefender offers equivalent protection with no associated national security concerns, making it the safer choice for most buyers, particularly those in the US, UK, and affected European markets. Kaspersky remains an excellent product for users in regions where it is not restricted and who are comfortable with the transparency measures the company has implemented.
