Official and Trusted Cybersecurity Antivirus Solutions

1. Microsoft Defender Antivirus (Windows Security) – [USA / Global]
Used by: U.S. federal agencies and several European government offices.

Features:

Integrated with Windows operating systems.

Offers enterprise-level threat detection in Microsoft Defender for Endpoint.

Free and regularly updated.

Why it's trusted: It minimizes third-party data sharing and is supported directly by Microsoft, aligning with public sector privacy standards.

2. Kaspersky Endpoint Security – [Russia, globally used but restricted in some countries]
Used by: Previously used in various governments, especially in Eastern Europe and Asia.

Security concerns:

Banned or restricted in the U.S., EU, and NATO-related countries due to geopolitical risks and allegations of government ties.

Note: Despite its strong detection capabilities, its Russian origin raises concerns in Western security policies.

3. ESET Endpoint Security – [Slovakia / EU]
Used by: Some European governments, particularly in the EU.

Features:

Strong threat detection and low system resource usage.

Transparent data handling policies.

Privacy: Compliant with EU’s GDPR regulations, making it favorable for public institutions.

4. Bitdefender GravityZone – [Romania / Global]
Used by: Public institutions in Europe, especially for large-scale networks.

Strengths:

Advanced AI-based threat protection.

Endpoint Risk Management.

Compliance: Frequently passes independent audits and is suitable for regulated industries.

5. Trellix (formerly McAfee Enterprise) – [USA]
Used by: Some U.S. government and defense agencies.

Specialization:

Tailored for enterprise/government networks.

Advanced threat hunting, zero-day detection.

Bonus: Offers FedRAMP-compliant solutions for U.S. government use.

6. Qihoo 360 Total Security – [China]
Used by: Some Chinese government institutions.

Controversy: Not recommended outside of China due to concerns over data privacy and control.

General Advice on Choosing Official Antivirus for Government Use:
Prefer tools that are:

GDPR or FedRAMP compliant

From countries aligned with your national security policies

Transparent in data collection and usage

Avoid software banned or restricted in your jurisdiction.