Bitdefender Internet Security

Protection for Windows

Download free 30-day trial

Best security against all Internet threats on Windows PCs

Choose the best-rated Internet security suite to protect your Windows PC against all online threats.

Choose Your Plan

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  • Unbeatable threat detection to keep all Internet threats away
  • Privacy firewall to block intrusions and filter your network traffic
  • Webcam and microphone protection to prevent eavesdropping
  • Secure VPN for complete online privacy, 200 MB/day/device[$IMPROVED$]

Get the best Internet security for Windows

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1-Year Plan

Number of devices

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Buy Now

GST included
See Terms of Use below.

2-Years Plan

Number of devices

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{PriceCondition, For the first 2 years}

Buy Now

GST included
See Terms of Use below.

3-Years Plan

Number of devices

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{PriceCondition, For the first 3 years}

Buy Now

GST included
See Terms of Use below.

Others follow. We lead the way.

PC Mag, January 24, 2024

PC Mag, January 3, 2024

AV Comparatives, January 2024

PC Mag, December 2023

AV-Test, March 2024

How Bitdefender compares to other cybersecurity brands

Best Protection

Best Protection against e-Threats (On a scale of 0 to 6, with 6 as the highest level of protection)

  • Bitdefender
  • 5.95
  • Norton
  • 5.88
  • McAfee
  • 5.40

Overall Score. January 2011 - December 2023. Source AV

Best Performance

Lighest Impact on Performance (On a scale of 0 to 6, with 6 as the lightest level of impact)

  • Bitdefender
  • 5.86
  • Norton
  • 5.57
  • McAfee
  • 5.48

Overall Score. January 2011 - December 2023. Source AV

Bitdefender. Choose What The Experts Use.

You get the most innovative technologies that predict, prevent, detect and remediate even the latest cyber-threats, anywhere in the world.

Best security against all Internet threats on Windows PCs

Bitdefender Internet Security has won the Product of The Year award from AV-Comparatives. It protects Windows PCs against all types of online threats, and includes Bitdefender VPN and Bitdefender Safepay for your privacy and secure online banking.


Bitdefender`s mobile security app keeps your Android device safe from all new and existing online threats.

Complete Real-Time Data Protection [$IMPROVED$]

Absolute power in the most efficient Internet security suite available today. Bitdefender Internet Security works against all e-threats, from viruses, worms and Trojans, to ransomware, zero-day exploits, rootkits and spyware. Your data and privacy are safe.

Network Threat Prevention

Bitdefender Internet Security stops attacks before they even begin. The new cyber threat intelligence technologies included can analyze and identify suspicious network-level activities, and block sophisticated exploits, malware and botnet-related URLs, and brute force attacks.

Advanced Threat Defense

Bitdefender Internet Security uses a technique called behavioral detection to closely monitor active apps. The moment it detects anything suspicious, it takes instant action to prevent infections.

Multi-Layer Ransomware Protection

Bitdefender’s multi-layered approach against ransomware includes a data-protection layer that safeguards your documents, pictures, videos and music against all kinds of ransomware attacks. It works with the Advanced Threat Defense module to protect your most important files from encryption by ransomware.

Vulnerability Assessment [$IMPROVED$]

Scan for security holes and vulnerabilities with just one click. Bitdefender Internet Security checks your PC for outdated and vulnerable software, missing Windows security patches and potentially unsafe system settings, then indicates the best fix.

Web Attack Prevention

Our web-filtering technology ensures that you never land on a harmful website. Find out whether your search results are safe to access before you actually click on a link. Bitdefender Internet Security also blocks all known infected links.


Online scams are on the rise, but our advanced anti-phishing protection easily keeps you out of danger. Bitdefender Internet Security sniffs and blocks websites that masquerade as trustworthy in order to steal financial data such as passwords or credit card numbers.


Our advanced filtering system warns you whenever you visit websites that may try to scam you.


Filters irrelevant messages in your Inbox. It’s available for local email clients (Microsoft Outlook, Thunderbird).

Rescue Environment

Some sophisticated malware, like rootkits, need to be removed before Windows starts. When Bitdefender Internet Security detects such threats, it reboots the computer in Rescue Environment for clean-up and restoration.


Bitdefender Mobile Security for Android reacts instantly to online threats without compromising your system’s performance.


Bitdefender Autopilot is designed to act as a Security Advisor and give you deeper insights into your security posture. Its smart capabilities mean that it can recommend security actions in the context of your system needs and usage patterns.

Bitdefender Photon™

This innovative, exclusive technology helps Bitdefender Internet Security adapt to your system’s hardware and software configuration to save computing resources and improve speed and performance.

Global Protective Network

Most heavy scanning takes place in the cloud, so there is virtually zero impact on your local resources. This means your system’s speed and performance remain unaffected. And your files are always completely private: Bitdefender does not scan the actual contents of your files, and never uploads or stores them in the cloud.

Game, Movie and Work Modes

Bitdefender Internet Security detects when you play, work or watch a movie, so it knows not to bother you with unnecessary requests. Depending on what you are doing, Bitdefender temporarily halts pop-ups, adjusts visual settings, and pauses unimportant background activities so you can enjoy your device to the max.

Battery Mode

This useful, intelligent feature saves battery life for laptops and tablets by temporarily tweaking system settings such as display, system cooling, system updates and Bluetooth connectivity.


Bitdefender’s mobile security app takes care of your online privacy and personal information.

Bitdefender [$IMPROVED$]

With Bitdefender VPN, you can stop worrying about privacy on the web. It protects your online presence by encrypting all Internet traffic. Bitdefender Mobile Security for Android includes up to 200 MB per day of encrypted traffic for your Android device.


The Anti-tracker extension blocks trackers that collect your data, and it allows you to view and manage this information on each website you visit. It keeps your browsing data private and enhances performance by loading webpages faster.

Microphone Monitor

Regain control over your own devices with Microphone Monitor. Use it and you can see what apps have access to your device’s microphone and when.

Webcam Protection

Protect your privacy and prevent webcam leaks. Webcam Protection notifies you when apps try to access your webcam, and lets you block unauthorized access.

Safe Online Banking

Bank and shop from a unique, dedicated browser that secures your transactions to prevent fraud. Bitdefender Safepay can now also automatically fill out credit card details in billing fields.

Parental Control

Parental Control offers digital help to parents and extra online safety to children. Filter out inappropriate content and manage your child's internet time with customizable daily limits, structured routines like Focus time, Family time and Bedtime. Enjoy a streamlined experience with unified reporting and easier management across all devices, providing you with a better overview of your child’s online activities.

Privacy Firewall

With Bitdefender Internet Security, you get a powerful layer of network protection, so your personal information stays safe from hackers and data snoops.

Wi-Fi Security Advisor

Assess the security of your Wi-Fi network and router, no matter where you connect.

Social Network Protection

Stay safe from malicious links and any online threats your friends unwittingly pass on to you via social networks.

File Shredder

Use this tool when you wish to delete a file for good and leave no traces that it ever existed on your PC.

Compare Bitdefender Products

Compare our award-winning products and get the best real-world protection, so you can keep doing the things that matter while we handle security.

Bitdefender Total Security

5 Devices

{Price-Comparison, tsmd, 5u-1y, For the first year}

Total Security

GST included

See Terms of use below.

Bitdefender Internet Security

3 Devices

{Price-Comparison, is, 3u-1y, For the first year}

Buy Now

GST included

See Terms of Use below.

Bitdefender Antivirus Plus

3 Devices

{Price-Comparison, av, 3u-1y, For the first year}

Antivirus Plus

GST included

See Terms of Use below.

Protection for every OS: Windows, macOS, Android and iOS
Device Optimizer
Privacy Firewall
Parental Control
Protection against malware, spyware, adware
Multi-Layer Ransomware Protection

System Requirements



Operating System: Windows 7 with Service Pack 1, Windows 8.1, Windows 10 and Windows 11

Memory (RAM): 2 GB

Available free hard disk space: 2.5 GB free space

*System performance may be affected on devices that have old generation CPUs


Internet Explorer version 11

Bitdefender Central


Supported browsers:

Chrome 56 and later

Firefox 52 and later

Microsoft Edge

? User guide

Frequently asked questions

How does Bitdefender Internet Security protect me against cyber threats?

Bitdefender Internet Security provides the best protection in the industry, as proven by the last 10 years of independent test scores.

Bitdefender Internet Security has won the Product of The Year award from AV-Comparatives.

You get a wealth of advanced security and privacy features for Windows - plus many bonus features, including secure VPN, Firewall and Parental Control.

Does Bitdefender Internet Security protect me against ransomware?

Bitdefender Internet Security offers unbeatable ransomware protection that keeps your documents, pictures and videos safe from all known and emerging cyber threats.

This security solution can identify even the latest ransomware families through the use of multiple layers of protection.

What type of devices and operating systems does Bitdefender Internet Security cover?

Bitdefender Internet Security is a security software designed especially for Windows PCs.

Why do I need Bitdefender Internet Security on Windows 10?

Windows 10 lets you run the security program of your choosing, and Bitdefender Internet Security is the perfect option if you need the best protection available today.

How does Bitdefender Internet Security compare to other Bitdefender security products?

Bitdefender Internet Security is a security software designed especially for Windows PCs.

Need security for all operating systems? Bitdefender Total Security offers cross-platform protection that covers Windows PCs, Macs, Smartphones and Tablets running Android or iOS for up to 10 devices.

Need more devices? Bitdefender Family Pack includes Bitdefender Total Security for up to 15 devices.

Need unlimited VPN traffic? Bitdefender Premium Security includes Bitdefender Total Security, Bitdefender Premium VPN for Unlimited Traffic & Premium Support.

Do I get a VPN with my Bitdefender Internet Security subscription?

Bitdefender Internet Security comes with a basic version of Bitdefender VPN that includes a generous amount of traffic (200 MB/ day, a total of 6GB/ month), free of charge.

If you need unlimited traffic, add Bitdefender Premium VPN to your Bitdefender subscription.

Can I try Bitdefender Internet Security before buying?

You can always try before you buy. Download your free 30-day full trial version of Bitdefender Internet Security and test the complete package, no credit card required.

How do I activate Bitdefender Internet Security?

Just go to your email after your purchase and follow the steps to create a Bitdefender Central Account and activate your subscription. Once your subscription is active in your Bitdefender Account, you can start installing & protecting your devices.

I changed my computer. How do I reinstall Bitdefender Internet Security?

Log in to your Bitdefender Central account, go to My Devices and start installing Bitdefender on your new device. If the old computer is no longer in use, you will not need an additional slot on your subscription.

Do I have to renew Bitdefender Internet Security?

To help you stay protected, Bitdefender Internet Security can be purchased as a subscription that will automatically renew if you enrolled at the time of purchase.

You can check and modify the status any time in your Central Account (My Subscriptions -> My Payments) if you activated the subscription on the same email address used for purchase.

If you purchased Bitdefender Internet Security, you can choose to renew early or purchase for another year (or upgrade) close to the expiration date, depending on the time left on your subscription.

In any case, starting 30 days before your expiration date, you will receive emails informing you that your subscription is about to expire and describing the next steps.

I have not received the activation code. What should I do?

Confirmation emails are typically received shortly after an order is placed. Make sure you also check your Promotions and Spam folders if your email client categorizes emails automatically. For more information, check this Support article.

More helpful articles and video tutorials are also available in Bitdefender Support Center.

Bitdefender Central

Security everywhere you go

All you need to know about Bitdefender Central

  • Activate Bitdefender protection on your devices
  • Manage from your browser on iOS or Android phone
  • Scan your network from Bitdefender Central mobile app
  • Get security updates 24/7
  • Get direct access to our support team

Sign In

Create Account

Download the Mobile App

Terms of use

Auto renewal terms

  • Your subscription automatically begins at the purchase date;
  • By subscribing, you are purchasing a recurring subscription which will automatically renew;
  • The Bitdefender Auto Renewal Plan is designed to save you time, effort, and minimize your vulnerability risk by extending your subscription automatically before you run out of protection.

Here is what the Bitdefender Auto Renewal Plan means for you

  • Continuous protection so that you never have to worry about your subscription running out before you renew manually;
  • Free upgrades whenever a new version of Bitdefender comes out;
  • Peace of mind that your devices are always protected;
  • Save time while we are taking care of the automatic renewal process;
  • Opt out at any time so that you are always in control of your renewal options;
  • 24/7 security all-subscription long without interruption;
  • The price offered is valid for the first year of subscription. After that, your subscription will be billed at the applicable renewal price which may be higher than the initial purchase price;
  • If a discount is presented, it describes the difference between the first term and renewal term subscription prices (e.g., first year price vs. each year thereafter). The prices are subject to change, but Bitdefender will send a prior notification by email, before the automatic renewal takes place. You will receive an email notification before you will be billed, along with information regarding pricing and the extension of your subscription duration.
  • Your subscription automatically begins at the purchase date;
  • By subscribing, you are purchasing a recurring subscription which will automatically renew.

How to cancel + email address cancelation support

  • You may cancel your automatically subscription from Bitdefender Central or by contacting Customer Support at: [email protected];
  • You may obtain a refund by contacting [email protected] within 30 days of your initial purchase or of the automatic renewal date.

Your subscription may include product, service and/or protection updates and features that may be added, modified or removed subject to Bitdefender Subscription Agreement and Terms and Conditions for Home Users and Privacy Notice.