The Best Computer Security Software of 2021

Headquartered in the Czech Republic, Avast Software develops cybersecurity software using modern technologies. The company offers Avast Business Antivirus as a comprehensive solution for businesses’ computer security needs. Features include:

• Enterprise-grade threat protection
• Cloud management console for up to 100 devices
• Threat analysis using next-gen AI and behavior-based machine learning

The stand-alone antivirus program can be purchased for small teams (up to 10 devices), while the management console add-on is recommended for larger teams. The software package also includes a VPN, a webcam shield, and a browser cleanup tool.

Business Antivirus plans start at $29.59 per year per device. Avast offers a free 30-day trial as well as a money-back guarantee.

Founded in 2001, Bitdefender is a Romanian company specializing in cybersecurity and antivirus software. The Internet Security software package includes:

• Real-time protection against online threats
• Firewall and traffic filtering
• Webcam and microphone protection

Bitdefender Internet Security protects against malware, spyware, and adware. It's designed to work with Windows 10 PCs and native Windows security features.

Bitdefender Internet Security starts at $19.99 for a single device the first year, with a subsequent renewal fee of $59.99.

Moscow-based Kaspersky Lab is a multinational antivirus and cybersecurity provider. The Kaspersky Security Cloud software suite offers:

• Cloud-based protection with mobile and remote capabilities
• Privacy and data protection tools
• Real-time monitoring of public databases for data leaks

Users can access six premium products and apps with a single account, including antivirus, anti-malware, anti-ransomware, and mobile security. The package also includes privacy features, such as a VPN, password manager, parental controls, and data leak detection.

Kaspersky offers two plans: Personal and Family. Personal allows three or five devices under one account and starts at $53.99 and $59.99 per year, respectively; Family allows 10 user accounts across a maximum of 10 devices, starting at $89.99 per year. A free 30-day trial is available for both plans.

A specialized unit of parent company Symantec, Norton provides digital security products and services. A Norton 360 Deluxe subscription includes:

• Real-time threat protection
• 100% Virus Protection Promise
• No-log VPN

Norton 360 Deluxe offers both offline and online protection against viruses, spyware, malware, and ransomware for up to five devices. The Smart Firewall feature monitors user activity and filters suspicious traffic to secure personal files and financial information.

The 360 Deluxe subscription costs $39.99 for the first year, and there are two other plans offered, Norton 360 Standard and Norton 360 with Lifelock Select, for $29.99 and $95.88, respectively. A free 7-day trial is available for all plans.

Webroot is a Colorado-based cybersecurity company providing internet security software. The company’s SecureAnywhere Internet Security Plus package features:

• Cloud-based threat detection
• Accelerated device scans and updates
• Password management powered by LastPass

Internet Security Plus secures devices and their network connections against viruses, malware, ransomware, and phishing scams.

Plans start at $44.99 per year for three devices or $69.99 per year for five devices. Webroot offers a 14-day free trial.