缓存标题：Download Security Software for Windows, Mac, Android & iOS | Avira Antivirus
缓存内容：Big savings. Strong online security: 43% off Avira Prime >Skip to Main ContentProducts & ServicesBlogSupportEnglishMy AccountAward-winning cybersecurity, powered by 1 clickIntroducing Avira Free Security for WindowsProtects you from scams, identity theft, and financial lossSecures your online activities with free VPNSpeeds up and cleans your PC for peak productivityAvira™. We've got cybersecurity covered.™Free downloadFree downloadFree downloadFree downloadFree forever. We don't sell your data."SPECTACULAR"Rating: 5 starsRATED 5/5 BY THE EDITORAward-winning technology that helps protect millions of users.Best usabilityAnti-PhisingMalware ProtectionReal-Word ProtectionPerformancePlay with soundIntroducing Avira Free Security Get all the security, privacy, and performance essentials for free ANTIVIRUS PROTECTIONBlocks all online threats, including malicious websites, ransomware, and spyware.FREE VPNSecures and anonymizes your online activities (browsing, chats, emails, etc.). 500 MB/month limit.SPEED BOOSTERImproves your PC's performance, speeds you up and accelerates your system startsIDENTITY PROTECTIONOur Password Manager secures your online accounts with strong, unique passwords you don't need to remember.ANTI-SCAM PROTECTIONProtects you from phishing attacks on social networks and in your inbox, including COVID-19 scamsFIREWALLWalls off sensitive access points to your device, keeping hackers at baySOFTWARE UPDATESHelps you patch vulnerabilities by updating apps and drivers - delivering better security and performance.PC CLEANERWipes your digital traces from browsers and apps - and helps prevent Windows from tracking you12Enhance your PC's performanceAvira Free Security provides real-time protection with very low memory usage. Thanks to its low system footprint and integrated performance optimization features, it keeps your device running smooth and fast. Storage optimizer & duplicate file finderBattery saver & startup optimizerSoftware & driver updaterStay safe online: shop, bank, and browse with confidenceAvira Free Security includes tools that help you stay safe online. Generate unhackable passwords and log in automatically to your accounts with our password manager extension. Shop securely, block phishing sites, and find the best deals with our Safe Shopping extension. Password ManagerSafe ShoppingFree VPNWhat the reviews say about us"A great security software that will protect you from major threats with little use of system resources. It also has many more features than some of its competitors: besides being a reliable antivirus it protects your privacy thanks to its free VPN and has a tool that helps you keep your PC clean of unnecessary files. If you're looking for an all-in-one solution that offers you protection, privacy and smoother computer use, Avira Free Security is an excellent choice."Rated 5/5 by the editorAvira free security is the latest evolution of the modern antivirus solution. In its basic form, it brings forth one of the best antivirus engines, a VPN, and a lot of other efficient goodies that will have a big impact on protecting your privacy and even ensure that your computer is running as it should." Rated 5/5 by the Editor. Read the full review>"Avira aims to protect the online world by providing security expertise and advanced antivirus software to more than 500 million customers. The company’s people-first philosophy is built on a foundation of credibility and transparency, ensuring that ethics guide all decision-making."Rated 5/5 by the editor. Read the full review> 123Secure all your devices with AviraAvira provides free cross-platform solutions for PCs, laptops, and mobile devices.Free Antivirus for Windows Free Antivirus for Mac Free Antivirus for Android Free MobileSecurity for iOS LOOKING FOR AN ALL-IN-ONE SOLUTION?Discover Avira PrimeProtect up to 25 devices with one subscriptionFree essentials or ultimate protection?AVIRA FREE SECURITYFree antivirus, VPN, and more. For 1 PC or Mac.Download for freeDownload for freeDownload for freeDownload for free All our free features, including:AntivirusVPN (500 MB/month)Password ManagerUpdate scannerAVIRA PRIMEUnlimited access to all our premium services.HK$921.99 / Year(-43%)Automatically renews at HK$921.99 / year, unless the renewal is cancelled. Price subject to change.Subscription details below.*Buy PrimeHK$525.99 / First YearAutomatically renews at HK$921.99 / year, unless the renewal is cancelled. Savings compared to the renewal price. Subscription details below.* All our premium features, including:Advanced protectionUnlimited VPNAutomatic cleaning & updatesSecure passwordsPremium mobile appsReal-time data breach alertsMaximized gaming performanceLearn more about cyber safetyFrom the blogPharming: How to protect yourself from internet scamsIf your WhatsApp account’s been hacked, here’s how to get it backThe definitive guide to keyloggers: Protect yourself!Ransomware: When blackmail goes digitalVisit our blogEverything you need for a secure digital lifeFree downloadFree downloadFree downloadFree downloadBoost security and performance, on all common operating systemsFree optimizer and free security software for more cyber protection, online privacy, and performanceAt Avira, we believe that everyone should enjoy a safer and more private digital life—anytime, anywhere. That's why we provide free software for your online security and privacy, plus performance enhancement—for Windows, Mac, Android, and iOs devices. Our Avira Free Antivirus is a great place to start if it’s just free software security you’re after: It offers cloud-based, real-time protection to help block a huge range of online threats and malware, including the latest viruses, Trojans, and ransomware.If you love surfing online, consider this free, discreet add-on that helps secure your browsing and can protect your privacy: Avira Browser Safety (for Opera, Firefox, and Microsoft Edge) was designed to shield you from dangerous and phishing websites, malicious advertisements, and online tracking. It highlights infected sites in your search results, so you’re forewarned. Plus, its anti-tracking capabilities can help prevent ad networks from monitoring your online activities. It also helps stop potentially unwanted applications (PUAs) from hiding in your downloads—once inside your system, they could spy on you or display an annoying stream of ads. Google user and online shopping fan? We have something for you too. Avira Safe Shopping offers a price comparison tool so you can still grab a bargain and rest assured it’s from a trusted site.Avira Phantom VPN encrypts your data traffic, helps anonymize your online activities and lets you surf more securely, even on public Wi-Fi. VPNs create a virtual private ‘tunnel’ through which all your online data is passed, where it’s safer from prying eyes and cyber criminals.Now you know how to stay more secure and private online (for free!), but what about device performance? Avira offers numerous cleanup and optimization tools to help you speed up your machine and free up more storage space. Now how about freeing up your own mind from the hundreds of passwords its struggling to remember? Avira Password Manager creates and stores strong passwords for all your user accounts. For peace of mind that you’ve got all your (virtual) bases covered, there’s this: Avira Free Security contains the free Avira tools as a single, practical solution. With just a few clicks, you can check your devices for security, online privacy, and performance issues—and fix problems fast. Stronger security and revved-up performance with our premium solutionsOur free security software offers essential tools to help optimize and protect your digital life. For example, the free Antivirus for Mac and Windows uses the same powerful virus scanner as our premium version. However, our Pro versions unlock additional features and enhanced levels of protection, such as a VPN with unlimited data volumes (limited to 500 MB per month in the free version). With Avira Antivirus Pro for Windows and Mac, you get built-in web protection and advanced anti-ransomware. Plus, there are no ads.Avira System Speedup Pro for Windows offers a wider range of tune-up tools for more thorough and automatic cleaning and device acceleration. Avira Internet Security offers multiple premium products but has a few more things up its sleeve than its free cousin, Avira Free Security: In addition to the advanced protection features of Avira Antivirus Pro (such as download and email protection), it also includes Password Manager Pro which can alert you if your data has been leaked in a breach. Plus, there’s Software Updater Pro, which allows you to automatically update your programs and drivers. Explore the differences between the Free and Pro versions here.If you truly want all that Avira has to offer, there’s Avira Prime for the discerning, even more security-conscious user. It’s our most comprehensive offering and runs on up to five different devices. This premium all-in-one includes all our Pro features for more security, online privacy and performance. Security software excellence for your various devicesAvira's advanced security technology is based on over 35 years of research. The independent review panel, AV comparatives, continuously tests Avira. Key features are considered its outstanding user-friendliness and performance as well as the low system impact and high repair capabilities. Millions of satisfied customers worldwide choose our free security and optimization solutions for desktop computers and laptops, as well as smart browser extensions and useful apps for their smartphones and tablets. Join them!*Important Subscription, Pricing and Offer Details Contract Type: contract for a monthly or annual subscription, starting when the transaction is complete. Click here for our Terms of Sale. Set-up: to get the protection/service started, you must download and install on each device and/or complete set-up. Free Trial: payment method required if signing up for a free trial (credit/debit card or PayPal only). When the trial ends, the paid subscription starts and the first term is charged, unless cancelled before. Special offer(s) may expire. Renewal Cycle: automatically renews each month or each year after the initial term, unless the subscription renewal is cancelled before the day you are due to be charged in your account or by contacting us. Click here to learn how. Renewal Prices: may be higher than the price for the initial term and are subject to change. They are charged up to 35 days before the annual subscription is due to renew, and we send you a notification email with the renewal price before. They are charged up to 5 days before the monthly subscription is due to renew. Cancellation & Refund: you can cancel your contract and request a full refund within 60 days of purchase for annual subscriptions and within 14 days of purchase for monthly subscriptions. For each annual renewal or free trial with paid annual subscription, you can request a full refund within 60 days of being charged, and after the 60 days, a pro-rated refund of the days left in your renewed subscription term, beginning the month after you request the refund. For free trial with paid monthly subscription, you can request a full refund within 14 days of being charged. For details, visit our Cancellation & Refund Policy. To cancel your contract or request a refund, click here. Updates: your subscription may include product, service and/or protection updates, and features that may be added, modified, or removed, subject to the acceptance of the License & Services Agreement. Usage: for non-commercial household use only. If you have issues adding a device, please contact us.SUPPORTGet HelpDownloadsAvira BlogAvira CommunityVirus LabSecurity WordbookProduct LifecycleAvira VDF UpdateVoluntary agreementAvira Protection CloudABOUTAbout AviraAwards and CertificationsCareersReferencesContactPressThreat LandscapeMobile banking malware infographicBeta testPARTNERS & FOR BUSINESSOEMAffiliate PartnersAvira Prime - BusinessFEATURESAntivirAdware RemovalAntivirus for SamsungAntivirus for Windows 8Antivirus for Windows 10Antivirus for Windows 11PACKAGESCompare products & servicesAvira PrimeAvira Internet SecurityAvira Free SecurityAvira Prime Mobile for iOSAvira Prime Mobile for AndroidStudent DiscountSenior Discount (+55 Years)DEVICE SECURITYAntivirusWindows AntivirusMac AntivirusAndroid AntivirusiOS AntivirusAntivirus ProSoftware UpdaterAvira Browser SafetyMalware ProtectionPhishing ProtectionRansomware ProtectionSpyware ScannerMobile Security Pro for AndroidMobile Security Pro for iOSONLINE PRIVACYPhantom VPNWindows VPNMac VPNAndroid VPNiOS VPNVPN ProPassword ManagerWhat is VPN?Change IPStay Safe on Public Wi-FiAnonymous BrowsingAvira Secure BrowserOPTIMIZATIONSystem SpeedupWindows System SpeedupSystem Speedup ProJunk CleanerBattery SaverRAM CleanerSpeed BoosterEnglish © 2024 Avira Operations GmbH, part of Gen Digital Inc. 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