Bitdefender Antivirus 2026 Review: AV-TEST 18/18 Points, Scam Copilot, and Product Comparison

9 min Reading Time

Last updated: March 2026 | Originally published: 2021

Bitdefender has once again earned the top score of 18 out of 18 points in the December 2025 AV-TEST lab evaluation – achieving 100% detection with minimal system impact. The Romanian vendor goes beyond traditional antivirus protection with its new Scam Copilot and AI-powered fraud detection. SecurityToday has analyzed Bitdefender’s current product lineup and explains which version suits whom.

TL;DR

AV-TEST December 2025: Bitdefender Total Security scores 18/18 points – 100% protection efficacy, minimal system impact, zero false positives (AV-TEST Institute).
AV-Comparatives Advanced Threat Protection 2025: Bitdefender blocks all 15 targeted attacks – perfect result, Gold Award (AV-Comparatives).
Scam Copilot, launched in 2025: AI-powered real-time fraud detection across email, SMS, WhatsApp, Telegram, and Discord (Bitdefender).
BSI Situation Report 2025: Approximately 280,000 new malware variants detected daily in Germany; 119 new vulnerabilities disclosed per day (BSI).
Internet Security discontinued – Total Security is now the entry-level cross-platform protection package, starting at around €40 for the first year.

Why Antivirus 2026 Looks Nothing Like 2021

When SecurityToday tested Bitdefender Antivirus Free Edition in 2021, the focus was on classic signature-based detection and scan speed. Five years later, the threat landscape has fundamentally shifted. AI-generated phishing emails now constitute the vast majority of malicious email campaigns, according to industry analyses. Fileless attacks via PowerShell and “Living-off-the-Land” techniques bypass traditional scanners. Social engineering over messaging apps complements email as a primary attack vector.

Bitdefender responded with an architectural overhaul: alongside classic signature- and behavior-based protection, it now deploys machine-learning models for unknown threats, cloud-based anomaly detection, and the new Scam Copilot – a dedicated AI-powered anti-fraud layer.

18/18

Points in the AV-TEST December 2025 lab test – top score in all three categories

Source: AV-TEST Institute, Magdeburg

AV-TEST December 2025: Detailed Lab Results

The Magdeburg-based AV-TEST Institute evaluated Bitdefender Total Security 27.0 on Windows 11 Pro. Summary of results:

Category	Points	Details
Protection	6.0 / 6.0	100% detection in both real-world and reference-set tests
Performance	6.0 / 6.0	Minimal system slowdown (1-22%, depending on scenario)
Usability	6.0 / 6.0	Zero false positives with legitimate software

Over a six-month endurance test (March-August 2025), Bitdefender consistently scored 18/18 points – without a single error. AV-TEST awarded Bitdefender four awards in 2025, including the “Windows Best Protection Award” for both consumer and business products.

AV-Comparatives: Gold for Targeted Attacks

Even more telling than standard malware tests are AV-Comparatives’ Advanced Threat Protection (ATP) evaluations. These simulate multi-stage, targeted attacks – far closer to real-world threats than simple signature detection.

Result: In the 2025 ATP test, Bitdefender blocked all 15 attack scenarios completely. Gold Award. Its pre-execution detection rate stood at 87% – a market-leading figure. That means most attacks are identified before they ever run.

“In the Real-World Protection Test (July-October 2025), Bitdefender achieved a 99.1% protection rate with only four false positives – the combination of high detection accuracy and low false-positive frequency is the true hallmark of quality.”
– AV-Comparatives Summary Report 2025

The 2026 Product Lineup: What Costs What?

Bitdefender has streamlined its product portfolio. Internet Security has been discontinued – and the Free Edition has also been retired. Total Security is now the baseline for multi-platform protection.

Product	Platforms	Core Features
Antivirus Plus	Windows only	Core protection, ransomware protection, anti-phishing
Total Security	Windows, macOS, Android, iOS	Firewall, Device Optimizer, Parental Controls
Premium Security	All platforms	Scam Copilot, unlimited VPN, email protection
Ultimate Security	All platforms	Dark Web Monitoring, Identity Protection Score

Introductory prices for the first year typically sit 40-50% below renewal rates. Check current DACH-market pricing directly on bitdefender.de – prices change frequently.

Scam Copilot: Deep Dive into the AI Fraud Shield

The most significant innovation since our last review: Bitdefender’s Scam Copilot analyzes incoming messages across all major channels – email (Gmail and Outlook), SMS, WhatsApp, Facebook Messenger, Telegram, Discord, and push notifications. The system relies on deep-learning models that assess content patterns, metadata, and sender behavior.

Two features stand out: “Scam Wave Alerts” proactively warn users about regionally active scams before they become victims. And the built-in AI chatbot explains – in natural language – why a message was flagged as suspicious. This is especially helpful for less tech-savvy users.

Scam Copilot is included starting with Premium Security.

Bitdefender vs. the Competition: Where Does It Stand in 2025?

The antivirus market faces a unique quality paradox: top-tier vendors have become so effective that measurable differences are marginal. In AV-TEST’s December 2025 evaluation, Bitdefender, Kaspersky, Norton, F-Secure, and McAfee all earned the top score of 18/18.

Differences emerge only under targeted-attack conditions: In AV-Comparatives’ ATP test, only Bitdefender and ESET achieved a perfect 15/15. Norton and Kaspersky each blocked 13 of 15.

A relevant context for the DACH region: In 2022, the BSI (Federal Office for Information Security) issued a warning regarding Kaspersky products. In the U.S., sales have been banned since September 2024. Users currently relying on Kaspersky should monitor developments closely. Bitdefender, ESET, and Norton face no comparable restrictions.

Under the Hood: How Bitdefender Uses AI

Photon technology – deployed since 2013 and continuously refined – learns individual user behavior. Trusted, known-safe applications are classified as such and monitored less intensively. This explains Bitdefender’s consistently strong benchmark performance.

For unknown threats, Bitdefender employs layered machine-learning models: static code analysis, behavioral observation before and during execution, and cloud-based anomaly detection. Especially relevant for enterprises: command-line and PowerShell feature extraction detects fileless malware – attacks that evade traditional scanners.

Which Version Is Right for You?

Antivirus Plus suffices for users running Windows exclusively and who don’t require advanced identity protection. Its core protection engine is identical to those in higher-tier versions.

Total Security is ideal for households with multiple devices and operating systems. Its firewall and parental controls are robust and well-integrated.

Premium Security makes sense for users who communicate heavily online and will actively use Scam Copilot. The unlimited VPN is a welcome bonus.

Ultimate Security suits users who want dark web monitoring and proactive identity protection – valuable if you’ve already suffered a data breach or hold a high-exposure professional role.

Verdict: Technically Excellent – but No Longer Unique

Bitdefender delivers a technically flawless product in 2026: 18/18 from AV-TEST, Gold in AV-Comparatives’ ATP test, and powerful AI capabilities. Scam Copilot addresses a genuine, growing need – one traditional antivirus tools simply don’t cover.

However: Norton, ESET, and (with geopolitical caveats) Kaspersky deliver comparable protection. Differentiation now lies less in raw detection rates and more in value-added features and pricing. If you’re already using one of these top-tier vendors, there’s no urgent reason to switch. But if you’re new to premium antivirus – or upgrading from a weaker solution – Bitdefender remains an excellent choice.

Frequently Asked Questions

Is the Bitdefender Antivirus Free Edition still available?

No – Bitdefender has discontinued its free edition. The most affordable option is Antivirus Plus for Windows. For free basic protection, Microsoft Defender – built into Windows – delivers strong results in AV-TEST evaluations.

Is Windows Defender sufficient as antivirus protection?

Yes, for basic needs. Microsoft Defender regularly scores 17-18 out of 18 points in AV-TEST. The gap between it and Bitdefender isn’t primarily in detection rates – it’s in extras: VPN, password manager, Scam Copilot, dark web monitoring. If you don’t need those, Defender is perfectly capable.

How does Bitdefender compare to Norton and ESET?

All three earned the top AV-TEST score of 18/18 in December 2025. In AV-Comparatives’ ATP test, Bitdefender and ESET achieved perfect 15/15 results; Norton scored 13/15. Differences are marginal – all three belong to the elite tier.

Does Bitdefender slow down your computer?

Not measurably. In AV-TEST’s Performance test, Bitdefender earned 6/6 points, with system slowdown ranging from 1% to 22% depending on the scenario (web browsing, downloads, installations, file copying). Photon technology learns your system and reduces monitoring overhead for trusted, safe applications.

Is the upgrade to Premium Security worth the extra cost over Total Security?

It depends on usage. Scam Copilot protects across all messaging channels (WhatsApp, Telegram, Discord) and email accounts. If you receive many messages and aren’t always confident judging link legitimacy, it adds tangible value. The unlimited VPN eliminates the need for a separate subscription. For tech-literate users who confidently spot phishing themselves, Total Security remains fully adequate.