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What is Security Essentials?

There are a host of nasty intruders on the mạng internet including viruses, trojans, worms và spyware. Security Essentials offers award-winning protection against these intruders without getting in your way.

The best brains and brawn in the background Security Essentials is built for individuals và small businesses, but it’s based on the same công nghệ that uses khổng lồ protect giant businesses (security products like Forefront, the Malicious Software Removal Tool, & Windows Defender). We have a whole team watching for new threats & coming up with ways to lớn squash them.

We’re proud lớn have received great recognition for the protection we offer: the VB100 award from virut Bulletin Ltd., Checkmark Certification from West Coast Labs, và certification from the ICSA Labs.


Easy to lớn get, easy lớn use

Downloading and installing Security Essentials is free* and easy. Once you have installed it, the software updates automatically once a day. We’re constantly tracking new threats & we keep your PC updated to help protect you. You don’t have to do anything. Security Essentials uses green, yellow & red màu sắc codes to lớn designate the security status of your PC and a color-coded icon in the taskbar tells you at a glance if your attention is needed. It’s simple—when you’re green, you’re good. However, if there’s a red or yellow threat, Security Essentials will alert you và recommend what to vị (you can act directly from the notification area without having to enter the application).

 Runs quietly without hurting PC performance Security Essentials runs quietly in the background. You’ll only be alerted when there are specific actions to lớn take. When you’re away or busy, Security Essentials can take the default kích hoạt on your behalf & you can xuất hiện the program later to đánh giá and undo those actions if you wish. Security Essentials is efficient và compact. Scans & updates are scheduled to run when the PC is idle and the software works in a way that your PC is still snappy when you’re using it. All this makes Security Essentials friendly for all sorts of computers—your old PC, your new PC, your laptop, as well as your little netbook.

* Internet access fees may apply while downloading. | Security Essentials Privacy Statement | Security Essentials License Agreement

Features và benefits

Why get Security Essentials? Security Essentials is world-class security for your PC that"s free* và easy to lớn download. Here are some ways Security Essentials helps keep your PCs safe without getting in your way or making you worry. Security Essentials offers complete system scanning capabilities with both scheduled và on-demand scanning options khổng lồ provide an extra cấp độ of confidence. Scheduled scans are turned on by default và configured lớn run weekly at 2 a.m. When the system is likely idle. There are three scanning options:

Quick Scan. By default, a quick scan rapidly checks the areas malware is most likely khổng lồ infect, including programs running in memory, system files, và the registry.

Full scan. A full scan checks all files on the PC, the registry, & all currently running programs.

Custom scan. A custom scan allows you khổng lồ scan only the areas you select.

You can choose when you want a scheduled scan to run, view the scan results before cleaning, or run a scan on demand. If the PC isn"t turned on when the scan is scheduled to run, Security Essentials will start the scan at the first opportunity once the PC is awake and idle.

When Security Essentials determines a possible threat on your PC, alerts notify you of the threat. Threats are categorized as Severe, High, Medium, or Low, và you can choose whether khổng lồ ignore, quarantine or remove the vật phẩm from the system.

Quarantine. Security Essentials blocks less severe threats & moves them lớn a quarantined queue where you can elect lớn restore or permanently delete them. By placing an thành quả in quarantine, you can thử nghiệm the effect of the item’s removal before deleting it from the system.

Remove. This action permanently deletes the tòa tháp from the system.

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Allow. This action stops Security Essentials from detecting the thành quả in future scans by adding it to the Allowed Items list. You can remove items from the Allowed Items menu at any time.

Protection needs lớn be up-to-date to be effective. Dynamic signature is a way to kiểm tra whether a suspicious program is bad or not. Before a suspicious program runs, Security Essentials pretends to lớn run it to lớn determine what it’s going to lớn do. This gives programs special signatures that are checked against our database of good and bad programs. Programs are watched even after they are approved to make sure they don’t vì chưng anything potentially harmful lượt thích make unexpected network connections, modify core parts of the operating system, or download malicious content.

To find information, definition updates, & analyses of all the latest threats that Security Essentials can help protect you against, visit the Malware Protection Center.

Rootkits are particularly difficult types of malware to protect against, & Security Essentials includes a number of new & improved technologies to address rootkits and other aggressive threats.

The kernal is at the heart of your PC’s operating system. Security Essentials monitors it to see if there are any attacks or harmful modifications.

Rootkits use stealthy methods lớn hide themselves và Security Essentials has the latest anti-stealth công nghệ to uncover them. For example, direct tệp tin system parsing helps find và remove malicious programs & drivers that rootkits try to lớn sneak in.

* internet access fees may apply while downloading. | Security Essentials Privacy Statement | Security Essentials License Agreement

System Requirements

The new Windows comes with Windows Defender

Windows Defender for Windows 10, Windows 8.1, Windows RT 8.1, Windows 8, và Windows RT provides built-in protection against malware. You can"t use Security Essentials, but you don"t need to—Windows Defender is already included và ready to go. But if you’re looking to protect a PC with an older version of Windows, you can use Security Essentials to help guard against viruses, spyware, and other malicious software. It provides real-time protection for your home or small business PCs.

Minimum system requirements for running Security Essentials Security Essentials is free* and easy to download and use. Here"s what you need to run it:

Operating System: Windows Vista (Service Pack 1 or Service Pack 2), Windows 7

A PC with a CPU clock speed of 1.0 GHz or higher, & 1 GB RAM or higher.

VGA display of 800 × 600 or higher.

200 MB of available hard disk space.

An mạng internet connection is required for installation and to tải về the latest virus and spyware definitions for Security Essentials.

Internet Browser:

Windows mạng internet Explorer 6.0 or later.

Mozilla Firefox 2.0 or later.

Note: As of April 8, 2014, technical for Windows XP & Windows XP Mode are no longer available, including updates that help protect your PC. Learn more about Windows XP kết thúc of

* mạng internet access fees may apply while downloading. | Security Essentials Privacy Statement | Security Essentials License Agreement