Download Free Cybersecurity Software

Cybercriminals and hackers seem to get more advanced every day. It’s not enough to just hope for the best — you need computer security software to help protect your devices and personal information. Avast One is an all-in-one solution with antivirus protection and an assortment of other essential cybersecurity tools. Download Avast One now to stay safer from hackers, scams, and other online threats.

Install free Avast One Mobile

Get it for Mac, PC, Android

Download Avast One

Get it for Android, iOS, Mac

Download free Avast One

Get it for iOS, Android, PC

Install free Avast One Mobile

Get it for PC, Mac, iOS

2025
Top Rated
Product

2026
Product
of the Year

Award-winning protection

Trusted by millions

30+ years of experience

Powerful threat protection

All your cybersecurity tools under one roof

Avast One combines advanced cybersecurity tools and essential protection features into a single app that helps keep your devices safer online. With Avast One, you can enjoy powerful antivirus protection, get anti-scam guidance, and receive alerts if your personal information is found leaked online. Download Avast One to help protect your digital life.

Install free Avast One Mobile

Get it for Mac, PC, Android

Download Avast One

Get it for Android, iOS, Mac

Download free Avast One

Get it for iOS, Android, PC

Install free Avast One Mobile

Get it for PC, Mac, iOS

Avast offers powerful cybersecurity features

Smart Scan

Quickly detect browser threats, outdated software, network issues, and files containing malicious code.

Hack Check

Monitor your personal information and find out if your login credentials have been exposed on the dark web.

Analyze files

Analyze and detect suspicious files and lock them out of your PC before they infect your device.

Behavior Shield

Monitor PC processes in real time for suspicious behavior that could indicate hacking or malware.

Monitor apps

Monitor your apps for suspicious behavior, and receive an alert if one starts behaving oddly.

Quarantine

Isolate potentially harmful files so they can’t access your data or system or inject malicious code.

Smart Scan

Quickly detect browser threats, outdated software, network issues, and files containing malicious code.

Hack Check

Monitor your personal information and find out if your login credentials have been exposed on the dark web.

Analyze files

Analyze and detect suspicious files and lock them out of your PC before they infect your device.

Behavior Shield

Monitor PC processes in real time for suspicious behavior that could indicate hacking or malware.

Monitor apps

Monitor your apps for suspicious behavior, and receive an alert if one starts behaving oddly.

Quarantine

Isolate potentially harmful files so they can’t access your data or system or inject malicious code.

Award-winning cybersecurity protection

Avast has a deep collection of awards from industry experts, and we’ve been consistently praised for providing top-notch internet security, antivirus, and privacy protection.

Avast’s shelves are stocked with awards in recognition of our industry-leading security software, including:

Performance Test 2025 AV-Comparatives: Advanced +

Home User Protection Test 2025 AV Test: Top Rated Product

Advanced In-the-Wild Malware Test 2025 AVLab: Product of the Year

VB100 2024 Virus Bulletin: A+

Advanced Threat Protection Test 2024 AV-Test: Advanced

Over 400 million users rely on our virus detector

But don’t just take our word for it.

Avast is fabulous! I have used you for probably 15 years and will never use other virus software!

Gina L.

Best service ever. I've never had better antivirus protection. I have been with them for many years, and I always refer them to anyone who asks.

Robin E.

Easy to use and effective. It's so easy to run the scans while I'm getting my coffee, and when I come back it's all done. Nice!

Roy F.

Get cybersecurity software for all your devices

We don’t just provide cybersecurity for PCs. Avast has powerful solutions to help keep your Mac and mobile devices safe, too.

MAC

Android

ios

Stay safer online with Avast One for Mac and help protect your Apple device against malware like ransomware and viruses.

You probably do everything on your phone from messaging to online shopping to banking. Avast One Mobile for Android helps protect all your online activity.

Avast One Mobile for iOS helps block threats like adware, Trojans, and spyware to help block scams and keep you safer online.

Go beyond simple antivirus with Avast

With Avast One you can experience peace of mind, joining hundreds of millions of others who trust Avast to protect their digital lives. Help keep your devices safe from advanced threats, and get protection against online scams. Download an award-winning cybersecurity app today.

Install free Avast One Mobile

Get it for Mac, PC, Android

Download Avast One

Get it for Android, iOS, Mac

Download free Avast One

Get it for iOS, Android, PC

Install free Avast One Mobile

Get it for PC, Mac, iOS

FAQs

What is cybersecurity?

Cybersecurity means keeping systems, networks, and devices safe by using advanced technologies and best practices that help identify malicious software, stop online attacks, and block other digital threats. Individuals and businesses use cybersecurity to help secure the integrity of their systems, protect their data, and prevent malicious actors from accessing sensitive information.

Do I need security software on my computer?

Yes, using security software is highly recommended. Cybersecurity tools are designed to help protect you from a range of online threats including:

Malware: Malicious software designed to harm or exploit a device or steal data.
Trojans: A malware program that comes wrapped and disguised as legitimate software.
Ransomware: Malware that encrypts files and demands a ransom to restore access.
Bots: Automated programs that covertly execute harmful activities on your device.
Phishing: Fraudulent attempts to obtain sensitive data by using fake messaging that appears to come from a trustworthy entity.

What types of cybersecurity are there?

Some of the most common types of cybersecurity include:

Network security: Protecting a computer network from unauthorized access.
Information security: Protecting data integrity and privacy in storage and transit.
User best practice/education: Educating users on how to avoid cyber threats.

What are the different types of cyber threats?

Some of the most common and dangerous cyber threats include:

Ransomware: Malware that locks your data and demands payment for release.
Phishing: An attempt to steal sensitive information or install malware through deceptive messages or websites.
Malware: Software designed to damage or gain unauthorized access to computer systems or devices.
Hacking: An unauthorized attempt by a hacker to access data or compromise a computer or network.
Data breach: Unauthorized access to confidential data.
Human error/insider threat: Risks posed by employees or users who unintentionally or deliberately compromise security.

What software do I need to protect my computer?

Cyber tools you need to help boost your online security include:

Antivirus: Detects and removes malware, such as viruses.
Firewall: Monitors and protects incoming and outgoing network traffic.
Web Shield: Blocks suspicious and harmful websites.
Behavior Shield: Monitors programs for unusual or suspicious activity.
VPN: Disguises your online activity and helps encrypt your connection.
Connection/Network advisor: Analyzes network security and advises on potential vulnerabilities.

In addition to computer security software, you can strengthen your privacy with Avast AntiTrack and use Avast Cleanup to streamline your PC and optimize performance.

What is the best computer security program?

When choosing personal cybersecurity software for your computer, go with a reputable program from a company with a proven track record of success. Avast offers comprehensive cybersecurity protection, is trusted by hundreds of millions of users worldwide, and has taken home an array of industry awards and accolades.

Download Free Cybersecurity Software

All your cybersecurity tools under one roof

All your cybersecurity tools under one roof

Avast offers powerful cybersecurity features

Award-winning cybersecurity protection

Over 400 million users rely on our virus detector

Gina L.

Robin E.

Roy F.

Get cybersecurity software for all your devices

Go beyond simple antivirus with Avast

FAQs

What is cybersecurity?

Do I need security software on my computer?

What types of cybersecurity are there?

What are the different types of cyber threats?

What software do I need to protect my computer?

What is the best computer security program?

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