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Bitdefender Antivirus Free for Windows
Antivirus protection for Windows. Absolutely free.
Choose the only free antivirus software that keeps your computer running clean, fast & virus-free while shielding you from the latest e-threats.
FREE DOWNLOAD FOR WINDOWS
Free antivirus protection that stops even the fastest-evolving attacks
Runs silently in the background and stays out of your way
Impossibly light on CPU (will not slow down your computer)
Live customer support included (unlike other free antivirus software)
Free download for Android
Free download for macOS
If someone says it's impossible to get a good service for free, they probably haven't heard about Bitdefender.
Cybernews.com (rated Bitdefender #1 out of 19 antivirus apps in 2022)
Free Antivirus Built with Award-Winning Technologies
With AI-driven threats evolving at a breakneck pace, you need a free antivirus that adapts at lightspeed
Computer viruses are now more sophisticated and harder to detect. Today’s e-threats - from Zeus P2P to Clop Ransomware - go straight for your wallet and are smarter than ever at evading detection, scaling across networks, and changing in response to thwarted attacks.
Bitdefender Antivirus Free for Windows keeps you safe, even against today’s constantly changing e-threats
By learning and monitoring the unique pattern of daily activity on your PC, Bitdefender Antivirus Free is able to instantly detect and isolate suspicious changes in real-time, no matter the source.
So you are shielded from known and emerging threats, including:
Ransomware
Financial extortion attacks that freeze PCs are on the rise, attacking everyone from individuals to global enterprises.
Cryptojacking
With cryptocurrency soaring in popularity, hijacking PC resources to mine for coins has become an all-too-common hazard.
AI-powered “spearphishing”
AIs like GPT-3 are now being exploited to write shockingly personalized emails that can dupe just about anyone.
“Zero-day” exploits
Every software update comes with flaws that need fixing. Until they’re detected, hackers use them as infection points.
Rootkits & Trojans
Notoriously hard to detect, these attack your PC’s central nervous system and use its credentials to steal & impersonate you.
Malicious websites & files
Malware can be embedded into almost anything you click on, including “next-gen” financial assets like NFTs.
Browse, click and download with confidence with Bitdefender Antivirus Free for Windows
FREE DOWNLOAD FOR WINDOWS
Free download for Android
Free download for macOS
Choose the free antivirus software that is both powerful and lightweight
Many free antivirus solutions are as intrusive and resource-heavy as the viruses they’re supposed to stop. Only Bitdefender Antivirus Free is designed from the ground up to keep you safe without disrupting your workflow and focus.
Keeps you informed without bothering you
Unlike other products, Bitdefender Antivirus Free is a non-intrusive software that only alerts you about threats when necessary.
Daily virus scans that don’t hold you hostage
Worried about painfully slow scans that drag your system to a halt? Don’t be. Bitdefender’s customizable virus scans catch every threat without negative impact on performance.
Won’t interfere with your other apps
Some antivirus tools are so intrusive they can feel like a virus. Bitdefender’s features stay tightly contained in one app, so they’re out of sight until you actually want to see them.
100% free antivirus protection
Get an antivirus that is totally free, no hidden costs, no trials required. Simply download and install the product by creating a Bitdefender Central account.
And if you want encrypted privacy on top of a clean PC
You’re in luck: Bitdefender Total Security comes with SafePay and a built-in VPN (as well as a host of additional security features), so you can browse, shop and bank online from anywhere with a 100% encrypted, anonymous connection.
Upgrade and secure all your devices with additional layers of security:
Bitdefender Antivirus Free
1 device
Bitdefender Total Security
5 devices
Old Price $
$
For the first year
Buy Now
See Terms of Use below.
Protects your Windows PC
Offers the most advanced security standards for Windows, macOS, Android and iOS devices
Secures your files from encryption by ransomware
Prevents unauthorized webcam & microphone access
Keeps your network safe from hackers
Includes Bitdefender VPN
Lets you access your devices remotely in case of loss or theft
Cleans & speeds up your devices
Old Price $
$
For the first year
Buy Now
See Terms of Use below.
Browse, click and download with confidence with Bitdefender Antivirus Free for Windows
FREE DOWNLOAD FOR WINDOWS
Free download for Android
Free download for macOS
System Requirements
Select
Windows
macOS
iOS
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Standard
Premium
Bitdefender Antivirus Free for Windows
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 with old-generation CPUs
SOFTWARE REQUIREMENTS
Internet Explorer version 11
Bitdefender Central
SOFTWARE REQUIREMENTS
Supported browsers:
Chrome 56 and later
Firefox 52 and later
Microsoft Edge
FREQUENTLY ASKED QUESTIONS
Is there a 100% free antivirus?
This is a product that is totally free, no hidden costs, no trials required. Bitdefender Antivirus Free for Windows offers you award-winning antivirus protection that’s light on your system and keeps you safe from viruses and e-threats.
How long can I use Bitdefender Antivirus Free on my Windows device?
With Bitdefender Antivirus Free for Windows you have permanent access to award-winning technologies that keep you safe from viruses and cyber threats. No need to worry about availability, you will be able to use the free antivirus protection without any validity due date.
Simply download and install free protection for your PC running any version of Windows (including Windows 10 and Windows 11) and enjoy a worry-free experience while gaming or browsing the Internet.
How can I check my computer for viruses?
Unexpected pop-ups, unfamiliar apps running in the background, slowdowns, and random sounds are some signs that your laptop or PC might be compromised. If you experience any of these, the best way to check your device for viruses is to use a dedicated antivirus for Windows.
Download Bitdefender Free Antivirus for Windows and benefit from real time protection for your laptop or PC. This free antivirus includes a powerful virus scanner which instantly detects and blocks viruses and e-threats on your Windows devices. If you need to make sure that your device is safe, the virus cleaner module will keep any threat at distance at all times.
How do I switch from the previous free product to the new Bitdefender Antivirus Free for Windows?
You can easily install the new Bitdefender Antivirus Free for Windows. Download and run the installation file, as the installation process will be seamless. Don’t worry, we will guide you through every step.
How does Bitdefender Antivirus Free for Windows protect me against viruses and cyber threats?
Bitdefender Antivirus Free for Windows uses the same Bitdefender technologies considered the best in the industry, as proven by the last decade of independent test scores.
Easy to install and use, Bitdefender Antivirus Free reacts instantly to cyber threats with no compromise to your computer’s performance.
What type of devices and operating systems does Bitdefender Antivirus Free cover?
Bitdefender Antivirus Free is a free antivirus software especially designed to protect your Windows PC. Quick to install and light on computer resources, it is good for gaming, image and video editing, and resource-intensive applications.
Why do I need Bitdefender Antivirus Free on Windows 11?
Windows 11 lets you run the antivirus program of your choosing, and Bitdefender Antivirus Free for Windows is the perfectly optimized option if you need a powerful antivirus software loaded only with the bare-bones protection features that every computer needs.
How does Bitdefender Antivirus Free for Windows compare to other Bitdefender security products?
Bitdefender Antivirus Free for Windows is a free antivirus software especially designed to protect Windows computers.
Need protection on more 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. Bitdefender Total Security also includes a basic VPN with up to 200 MB per day of encrypted traffic for your 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 Antivirus Free download?
No, Bitdefender Antivirus Free for Windows does not include the VPN service that comes with other Bitdefender products.
If you need a secure VPN, Bitdefender Total Security comes with a basic version of Bitdefender VPN that includes a generous amount of traffic (6 GB monthly), free of charge.
If you need unlimited traffic, add Bitdefender Premium VPN to your Bitdefender subscription.
I changed my computer. How do I reinstall Bitdefender Antivirus Free?
Log in to your Bitdefender Central account, go to My Devices and start installing Bitdefender on your new device.
Didn't find what you were looking for?
Log in to your Bitdefender account at Bitdefender Central to find out more about your Bitdefender products (video tutorials included).
Helpful articles are also available in Bitdefender Support Center.
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.
Affirmative consent
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: cancel@bitdefender.com;You may obtain a refund by contacting refunds@bitdefender.com 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.
Download your user guide.
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Bitdefender Unveils Newly Architected Antivirus Free for Windows
efender Unveils Newly Architected Antivirus Free for Windows CompanyBlog
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Bitdefender Unveils Newly Architected Antivirus Free for Windows
Silviu STAHIE
March 17, 2022
Promo Protect all your devices, without slowing them down. Free 30-day trial This week Bitdefender released a brand new, re-architected free antivirus product -- Bitdefender Antivirus Free for Windows. The new version offers enhanced features, functionality, and improved user experience in comparison to the previous free version, including, malware protection, and custom scanning scheduling options. Additionally, the new free version offers email protection for Outlook and Thunderbird, providing an extra layer of protection against malware. There is also an exploit detection feature that informs users if they are vulnerable or at higher risk for compromise.In December 2021, Bitdefender announced the end-of-life for its previous free antivirus solution that resided on a legacy technology platform. The new Bitdefender Antivirus Free for Windows has been re-engineered from the ground up to detect and block the latest threats targeting today’s modern environments.In a recent survey of 10,000 consumers across the globe, Bitdefender found that the majority of consumers are highly exposed to threats. When analyzing all respondent behaviors, from password reuse, to the number of online accounts and services, to sharing of account details and lack of security services on their devices, just 11 percent of respondents could be described as “secure” in terms of their cybersecurity practices.“The attack surface continues to grow with an increasing number of devices used by consumers at home and on the go that need basic protection,” said Ciprian Istrate, vice president, Bitdefender Consumer Solutions. “We completely redesigned Bitdefender Antivirus Free for Windows to provide a powerful first line of defense against modern threats that is also intuitive and easy to use. While our new free version doesn’t include many important features for complete security protection, it helps stop attacks at the door while giving users a good way to test out Bitdefender technology finding out first hand why we continuously lead independent tests for threat detection.”To try Bitdefender Antivirus Free for Windows today and experience award-winning cybersecurity technology visit: https://www.bitdefender.com/solutions/free.html. tags Product Updates
Author Silviu STAHIE Silviu is a seasoned writer who followed the technology world for almost two decades, covering topics ranging from software to hardware and everything in between.
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【电子前哨】比特梵德已经恢复免费版服务 - 知乎
【电子前哨】比特梵德已经恢复免费版服务 - 知乎首发于电子前哨切换模式写文章登录/注册【电子前哨】比特梵德已经恢复免费版服务摩茲拉東方Project 愛好者2021年12月，知名防毒软件开发商比特梵德（Bitdefender）宣布将于31日结束免费版本，他们会继续继续为免费版使用者提供技术支持，直到2022年6月30日[1]。但是这并非终结，比特梵德在三个月后（2022年3月）宣布已经推出一款全新的免费防毒产品。根据官方网站的信息，新版本增强使用者体验和提供更多功能，包括增加漏洞检测功能、为Outlook和Thunderbird提供电子邮件保护，这些是旧版本所不具备的[2]。参考^Bitdefender Free will be retired on December 31, 2021 - gHacks Tech News https://www.ghacks.net/2021/12/10/bitdefender-free-will-be-retired-on-december-31-2021/^Bitdefender Unveils Newly Architected Antivirus Free for Windows https://www.bitdefender.com/blog/hotforsecurity/bitdefender-unveils-newly-architected-antivirus-free-for-windows发布于 2022-03-18 20:21计算机网络网络安全杀毒软件赞同 3添加评论分享喜欢收藏申请转载文章被以下专栏收录电
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比特梵德VS卡巴斯基（均为免费版，样本扫描测试）_哔哩哔哩_bilibili
比特梵德VS卡巴斯基（均为免费版，样本扫描测试）_哔哩哔哩_bilibili 首页番剧直播游戏中心会员购漫画赛事投稿比特梵德VS卡巴斯基（均为免费版，样本扫描测试）
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另外视频右侧为KSC，在大部分地区已经代替KFA。
切除原视频内含的广告环节，不可抗力。
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卡巴斯基、诺顿和 Bitdefender 那个更推荐中国用户？ - 知乎
卡巴斯基、诺顿和 Bitdefender 那个更推荐中国用户？ - 知乎首页知乎知学堂发现等你来答切换模式登录/注册卡巴斯基（Kaspersky）杀毒软件360 杀毒诺顿杀毒软件BitDefender卡巴斯基、诺顿和 Bitdefender 那个更推荐中国用户？卡巴斯基、诺顿和 Bitdefender 是国际上最最出名的三大杀毒软件，常年霸占各大杀软评测前三。 那么这些软件，那个更推荐中国用户使用呢？显示全部 关注者59被浏览236,993关注问题写回答邀请回答好问题 93 条评论分享9 个回答默认排序ShuiAndy 关注谢邀。我觉得对比诺顿和卡巴斯基，不带Bitdefender不太好。诺顿，卡巴，Bitdefender 作为常年霸占各大杀软评测前三的杀毒软件，在各个方面基本没有差距，但是还是有细微的差别的。Bitdefender：优点：各大杀软评测里，无论是查杀率、性能、误报率基本都是第一，不是第一也是第一梯队。无敌强的ATD主动防御，有一套本地程序评分机制，对各个程序的日常操作进行打分，如有持续异常行为，直接干掉。无数次主动防御测试里ATD妥妥的都是第一名，并跟第二名拉开了半个档次。在2019版更是加上了回滚。以前BD的主防虽然强无敌，但是由于没有回滚，万一被过掉了文件基本就被加密了。而前几天刚刚发布的2019版终于正式发布了回滚的功能，算是补齐了最后一块短板。ATD主防，天下第一。优秀的系统资源占用。BD在各项杀软性能测试里一直强于卡巴和诺顿，处于第一梯队。相比卡巴和诺顿，BD才是真正的安静。AutoPilot 功能打开之后，遇到病毒连个提示窗口都没有就杀掉了，真正做到全自动处理。而这个功能在2019版是默认开启的。缺点：没有进入中国市场，目前的中文版不被官方承认，升级就覆盖掉了。当然，更新也是个问题。虽然误报率极低，一直处在世界前列，但对中国特色程序表现并不算很友好。云信誉相对卡巴和诺顿差一些，导致2019新加的防勒索功能误报很高，希望是暂时的。ATC是强无敌，但如果评分机制有问题而产生误报，则株连九族杀无赦。部分用户出现了“腾讯一个游戏组件误报，直接杀腾讯全家”的令人哭笑不得的行为。虽然不卡系统，但是内存占有率奇高。本人32G内存，BD主程序能占300M~600M。虽然内存是拿来用的，但是看起来也是闹得慌。卡巴斯基：优点：BD在各大杀软评测里常年第一，那常年第二的就是卡巴斯基了。卡巴的主动防御虽然没有BD那么智能那么变态，但是它有自己的变态之处：回滚。在各种防勒索测试之中，卡巴在主动防御被过掉之后，绝大多数情况下也会靠其强大的回滚机制把被加密的文件还原回来，主动防御并没有差BD多少，加上非常好的云信誉系统，综合起来仍然是最好的主动防御之一。仍然是极其优秀的系统资源占用，现在的卡巴已经基本摘掉了“卡巴死机”的帽子了。顺带说一句，Windows Defender系统性能占用极差。。卡巴斯基进入中国也有一定年头了，本地化做的不错，对待国内不太干净的程序也算好，国内用户实际使用来讲算是这三个里面误报最少的了。缺点：卡巴斯基虽然性能一直在改进，但是程序的稳定性一直是个问题，虽然不影响使用，但是各种奇葩的小毛病有些时候真的是令人哭笑不得。比如前段日子的2019a版，更新的时候会卡在98%不动，打开一下Edge浏览器就好了（无语），不知道刚刚推送的2019b版修复了没。据说卡巴国内代理商今年卖的key只能激活五次，重装也算？真不知道他们在想什么。对某些人不算缺点的缺点，都2019版了UI竟然是32位的，任务管理器里看着真是尴尬。诺顿:这个优缺点得一起说。也就是诺顿令人纠结的“万物杀“。只看结果的话，诺顿在各大杀软评测里总是拿不到第一梯队的分数。但问题却不在于它的性能和查杀率有多差，而是在于它误报率高于行业平均水平，并且部分主动防御是交给用户判断的。事实上，加上用户判断的那0.5%，诺顿在av-comparatives的查杀率一直是100%，这点没有任何其他杀软能做到，包括BD和卡巴。但问题就是在于这0.5%的用户判断率和1%左右的误报率给它拉低了分数。也正因如此，虽然某些测评诺顿表现一般，但是没人能说它不是跟卡巴、BD一同坐在第一梯队的杀毒软件。优点：主动防御方面，诺顿靠的是全方位、多层次的防护。从入侵防护、云信誉查询、行为检测、启发式扫描，诺顿都做到了顶级，唯一欠缺的是智能性（要知道当年诺顿可是靠着智能主防独步天下的，哎）。但是仍然是主动防御里跟BD卡巴属于第一梯队的。性能方面，诺顿在2007版就开始注重性能表现，自此以后系统资源占用都极其优秀。虽然AV-C最近性能评测一般，但是我自己用PC-Mark对比卡巴和BD却发现诺顿对分数影响竟然是最小的。程序稳定，UI流畅，卡巴和BD的UI都掉帧，难受。小bug基本没有。缺点：万物杀，我倒是没太遇到过，因为我目前Windows里没有盗版和破解软件，误报是有但是很少，国内普通用户我就没有发言权了。下载个程序右下角还得告诉你是安全的，多此一举，静默模式竟然还有时间限制。最后附上一些资料：AV-C上半年查杀率统计误报率性能表现以下是本人昨天使用PC-Mark实测的性能测试未安装杀软（关闭Windows Defender）Bitdefender 2019Kasperkey 2019aNorton 22.14.2.15编辑于 2018-07-19 22:20赞同 15656 条评论分享收藏喜欢收起我永远喜欢白雪 关注首先纠正一下题主在其他回答下的评论，号称世界上最大病毒库的是 bitdefender，卡巴斯基自己都没有说过有最大的病毒库。其次，杀毒软件不以病毒库大小论英雄，病毒库小可能正说明杀毒软件提取病毒特征的能力强，能用很小的病毒库对应大量的病毒。第三，360由于其巨大的装机量，在国内收集病毒的能力很强，以至于至少在国内，360可以与国际知名的杀毒软件一较高下。第四，在国内我认为卡巴斯基更适用，国内卡巴斯基误报控制比诺顿好很多，诺顿有一个“万物杀”的称号，在天朝大多数软件或多或少有点不那么正经的情况下，可能会烦死人。杀毒软件不止看查杀率，也看误报率，如果它把很多不是病毒的都当成病毒，那也就没有意义了。第五，我理解的题主所说的“诺顿”指的是 symantec 旗下的 norton，而不是 eset 的 nod32，因为经常有人混淆，特别提一下，诺顿是 norton 的官方中文名，而 nod32 没有官方翻译。编辑于 2018-07-18 21:29赞同 226 条评论分享收藏喜欢
【电子前哨】比特梵德即将停止提供免费版服务 - 知乎
【电子前哨】比特梵德即将停止提供免费版服务 - 知乎首发于电子前哨切换模式写文章登录/注册【电子前哨】比特梵德即将停止提供免费版服务摩茲拉東方Project 愛好者知名防毒软件开发商比特梵德（Bitdefender）宣布将于2021年12月31日结束免费版本，原因仅模糊提到免费版本不符合该公司的高标准要求，受影响的使用者可以通过特别折扣优惠进行升级。比特梵德承诺将继续为免费版使用者提供技术支持，直到2022年6月30日[1]。参考^Bitdefender Free will be retired on December 31, 2021 - gHacks Tech News https://www.ghacks.net/2021/12/10/bitdefender-free-will-be-retired-on-december-31-2021/发布于 2021-12-13 20:06杀毒软件计算机安全信息安全赞同 3添加评论分享喜欢收藏申请转载文章被以下专栏收录电