Microsoft Security Essentials ( MSE ) is an antivirus software (AV) product That Provides Protection contre different kinds of malicious software Such As computer viruses , spyware , rootkits and Trojan horses . Before version 4.5, MSE ran on Windows XP , Windows Vista, and Windows 7 , but not on Windows 8 and later, which have built-in AV components. MSE 4.5 and later do not run on Windows XP. The license agreement Allows home users and small businesses to install and use the product free of charge. It replaces Windows Live OneCare , a discontinued commercial subscription-based AV service, and the free Windows Defender , which until Windows 8 protected users from only adware and spyware.
MSE provides real-time protection, protection against viruses, and remote monitoring. It lacks the personal firewall of OneCare or the centralized management features of Forefront Endpoint Protection .
Microsoft’s announcement of its own AV software on November 18, 2008. Symantec , McAfee, and Kaspersky Lab – a competitor independent software vendors – it is an unqualified competitor, but AVG Technologies and Avast Software is developing its potential to expand the consumers’ choice of AV software. AVG, McAfee, Sophos and Micro Trend that the integration of the product into Microsoft Windows would be a violation of competition law .
The product is generally positive and praising its user interface , low resource usage and freeware license. It secured AV-TEST certification on October 2009, having demonstrated its ability to eliminate malware. However, it lost the certificate on October 2012, having a constant decline in protection and repair scores. In June 2013, MSE achieved the lowest possible protection score, zero. According to a March 2012 report by anti-malware specialist OPSWAT , MSE has been the most popular AV product in North America and the second most popular in the world, which has resulted in several antivirus programs that try to impersonate it.
Microsoft Security Essentials is an antivirus software (AV) that produces malicious software ( malware ), including computer viruses , spyware , Trojan horses and rootkits . It replaces Windows Live OneCare , a discontinued commercial subscription-based AV service, and the free Windows Defender , which until Windows 8 only protected users from adware and spyware. It automatically checks for and downloads the virus definitions from Microsoft Update , a web-based software service. Users can alternatively download updates from the Microsoft Security Portal website.  On 30 September 2011, a faulty definition update caused the product to incorrectly Google Chrome as malware. The issue was resolved within three hours.   MSE originally ran on Windows XP , Windows Vista, and Windows 7 , , and versions of Windows XP  and Microsoft released production definitions for Windows XP on July 14, 2015. 
MSE is built upon the same foundation as other Microsoft security products; all uses the same virus definitions and anti-malware engine, known as Microsoft Malware Protection Engine (MSMPENG).   It does not have the personal firewall of OneCare or the centralized management features of Forefront Endpoint Protection . 
MSE provides real-time protection , constantly monitoring activities on the computer and scanning.  It is possible to identify threats and prompt for user input on how to deal with them. If no response is received within ten minutes, it is assumed that the threats are defined in the application’s settings. Depending on which settings, it may also create System Restore checkpoints before removing the detected malware.  As a part of real-time protection, by default, MSE reports all suspicious behaviors of monitored Microsoft Active Protection Service (MAPS, originally Microsoft SpyNet  ), a web-basedservice. If the report fixes a new threat, the threat of an unreleased virus definition. 
Hardware requirements for the product depend on the operating system ; Windows Vista or Windows 7, it requires a 1 GHz processor, 1 GB of RAM, a computer monitor with a display resolution of at least 800 × 600 pixels , 200 MB of free hard disk space and an Internet connection. 
On 18 November 2008, Microsoft announced plans for a free consumer security product, codenamed Morro .  This development marked a change in Microsoft’s consumer AV marketing strategy: INSTEAD of Offering a subscription-based security product with a host of other tools, Such As backup and a personal firewall , Morro Would offer free AV protection with a smaller impact it system resources.  Amy Barzdukas, Senior Director of Product Management for the Online Services and Microsoft Windows Division, announced that Morrowould not directly compete with other commercial AV software; it was focused on the 50 to 60 percent of PC users who would not pay for AV protection.  By 17 June 2009, the official name of Morro was revealed: Microsoft Security Essentials. 
On 23 June 2009, Microsoft released a public beta to 75,000 users in the United States, Israel, China and Brazil. Anticipated to be available in 20 markets and 10 languages, the product was scheduled for release before the end of 2009;  The final build was released on September 29, 2009. 
Almost a year after the initial release, Microsoft quietly released the second version . It entered the technical preview stage on 19 July 2010,   and the final build was released on 16 December 2010. It includes Network Inspection System (NIS), a network intrusion detection system that works on Windows Vista and Windows 7 , which is a new anti-malware engine that employs heuristics in malware detection. Version 2.0 integrates with Internet Explorer to protect users against web-based threats.   NIS requires a separate set of definition updates. 
Sixteen months after the release of version 2.0, Microsoft released version 3.0 and released Microsoft Security Essentials 4.0. A public beta program started on November 18, 2011, when Microsoft sent out invitations to potential participants without announcing a version number.   The first beta version was released on November 29, 2011,   and the final build on April 24, 2012.  Microsoft has launched a pre-release program that provides volunteers with the latest beta version and accepts feedback. 
On 21 February 2014, version 4.5.  On the same day, Microsoft announced that starting with this version, Windows XP would not be supported.  Older versions would continue to receive virus definition updates until July 14, 2015. 
Microsoft Security Essentials does not run on Windows 8 and later, which has its own security subsystem, Windows Defender. On September 13, 2011, at the Build conference in Anaheim, California , Microsoft unveiled the developer preview of Windows 8, qui Had a security component can of Preventing an infected USB flash memory from the system Compromising During the boot process.   On September 15, Windows 8 developer’s blog confirmed that Windows Defender in Windows 8 would take over the role of virus protection. Jason Garms of Microsoft shows how Windows Defender is registered with Action Centeras an AV and spyware protection tool, and how it blocks drive-by malware.  On 3 March 2012, Softpedia reviewed the consumer preview of Windows 8 and noted the similarity in appearance of Windows Defender and Microsoft Security Essentials 4.0 Beta. According to Softpedia , Windows 8 Setup requires Microsoft Security Essentials to be uninstalled before upgrading Windows 7. 
The product’s license agreement allows you to download, install, and use Microsoft Windows.  Since October 2010, small businesses-have aussi beens allowed to install the product on up to 10 devices,  intended use in academic institutions and Governmental rentals is forbidden, as is reverse engineering, decompiling or disassembling the product or working around its designed limitations. 
MSE requires no registration or personal information to be submitted during installation;  However , the validity of the operating system is verified by the Windows Genuine Advantage system. If said license is found to be invalid, the software will notify the user and will operate after a period of time. 
The announcement and debut of Microsoft Security Essentials has been mixed with the AV industry. Symantec , McAfee, and Kaspersky Lab , three competing vendors, claimed to be less than their own software.  Jens Meggers, Symantec’s vice president of engineering for Norton products, dismissed it as “very average – nothing outstanding”.  Tom Powledge of Symantec urged his customers to be mindful of what protection they have, bearing in mind that OneCare offered “substandard protection” and an “inferior user experience”. Joris Evers, director of worldwide public relations for McAfee stated “with OneCare’s market share of less than 2%, we understand Microsoft’s decision to shift attention to their core business.”  Justin Priestley of Kaspersky stated that Microsoft “continues to hold a very low market share in the consumer market, and we do not expect the exit of OneCare to change the playing field drastically.” 
Avast Software said it was an ambivalent view towards the product. Vincent Steckler, Avast Software’s CEO said “MSE is not the silver bullet but it’s also a bad thing to care for some claim.”  A representative of AVG Technologiesstated, “We have a positive step for AV landscape.” AVG has believed in the right to free antivirus software for the past eight years.  However, AVG raised the issue of distributing the software product and said, “Microsoft will have to do more than simply make the product available,”  adding that integration of Microsoft Security Essentials with Microsoft Windows would be a violation of competition law . McAfee, Sophos, and later Micro Trend asserted that an antitrust lawsuit would surely have continued if Microsoft had bundled the product with Windows.  
The announcement of Microsoft Security Essentials deals with the stocks of AV vendors. On November 19, 2008, after Microsoft announced codename Morro , Symantec and McAfee shares fell 9.44 and 6.62 percent respectively.  On June 10, 2009, after announcing an upcoming beta version, Microsoft shares rose 2.1 percent. Symantec and McAfee shares, however, fell 0.5 and 1.3 percent respectively. Daniel Ives, an analyst with FBR Capital Markets , said that Microsoft Security Essentials would be a “long-term competitive threat”, although near-term impact would be negligible. 
Reviews and awards
The public beta version received Several reviews, ict Citing low resource usage, straightforward user interface and price points .    Brian Krebs of the Washington Postreported that a quick scan on a Windows 7 computer took about 10 minutes and a full scan about 45 minutes.  Ars Technica reviewed it positively, citing its organized interface, low resource usage, and its status as freeware . 
Nick Mediati of PCWorld noted MSE’s “clear-cut” and “cleanly designed” tabbed user interface . He did, however, find some of the settings to be cryptic and confusing, defaulting to “recommended action”, with the only explanation of what action is to be found in the help file. He was also initially confused because the user interface failed to mention that Microsoft Security Essentials automatically updates itself, rather than being manually updated via the Update tab;  an explanation of this feature was included in the final release. 
Neil Rubenking of PC Magazine Successfully installed the beta version on 12 malware-infected systems and a small package (about 7 MB, depending on the operating system) and speedy installation. But the initial virus definition update took place between 5 and 15 minutes, and the full installation occupied about 110 MB of disk space. Rubenking noted that the beta version sets Windows Update into fully automatic mode, although it can be turned off again by Windows Control Panel . Some full scans would take more than an hour on infected systems; a scan on a clean system took 35 minutes. An on-demand scan test Rubenking conducted in June 2009 with the beta version found. 89 percent of all malware samples: 30 percent of the commercial keyloggers, 67 percent of rootkits , but only half of the scareware samples. 40 percent of the commercial keyloggers and 78 percent of the rootkits were found. 
On January 7, 2010, Microsoft Security Essentials won the Best Free Software Award from PC Advisor .  In the same year, it secured the Bronze award from the AV-Comparatives for proactive detection of 55 percent of new or unknown malware, the Silver award for low false-positives (six occurrences) and the Bronze award for overall performance. 
In October 2009, AV-TEST Conducted a series of trials end on the build of the product in qui it detected and caught 98.44 percent of 545.034 computer viruses , computer wormsand software Trojan horses as well as 90.95 percent of 14,222 spyware and adware samples. It is detected and eliminated all tested rootkits, generating no false-positives . Between June 2010 to January 2013, AV-Test tested Microsoft Security Essentials 14 times; in 11 out of 14 cases, MSE secured AV-TEST certification of outperforming AV industry average ratings.  [a]Microsoft Security Essentials 2.0 was tested and certified on March 2011. The product achieved a score of 2.5 out of 6. Report details show that version 2.0 was it is not able to stop all the malware from the wildList, it was not able to stop all Internet-based attacks because it lacks personal firewall and anti-spam capabilities.  In an April 2012 test, version 2.1 achieved scores of 3.0, 5.5 and 5.0 for protection, repair and usability.  Version 4.0 for Windows 7 SP1 (x64) was tested in June 2012 and achieved scores of 2.5, 5.5 and 5.5 for protection, repair and usability. In October 2012, the product lost its AV-TEST certification when Microsoft Security Essentials 4.1 achieved scores of 1.5, 3.5 and 5.5 for its protection, repair and usability.  
In AV-TEST’s 2011 annual review, Microsoft Security Essentials came last in protection, seventh in repair and fifth in usability.  In the 2012 review, it came last in protection and best in usability; however, having lost its certificate, it was not qualified for the usability award.  In June 2013, MSE achieved the lowest possible protection score, zero. 
On September 29, 2010, Microsoft announced that MSE had more than 30 million users.  The Security Industry Market Share Analysis report of June 2011, published by OPSWAT, describes it as one of the most popular AV products in the world,  with 10.66 percent of the global market  : 5 and 15.68 percent of the North American market.  : 4 The same report shows Microsoft as the number one AV vendor in North America with 17.07 percent market share,  : 3 and the number four AV vendor worldwide.  : 2
John Dunn of PCWorld , who analyzed the report, commented that it was a problem for the future. He named Microsoft Security Essentials as an influence on PC users to adopt free AV software. 
A September 2011 OPSWAT report found that MSE had the most popular product in the world, and remained the most popular in North America.  OPSWAT reported in March 2012 that the product had maintained its position, and that Microsoft’s market share had been improved by 2 percent worldwide and 3 percent in North America.  Seth Rosenblatt of CNET News commented on how the product’s share rose from 7.27 in 2010 to 10.08 in 2012, stating that “use of the lightweight security suite exploded last year”. 
Impersonation by malware
The popularity of Microsoft Security Essentials. In February 2010, a security package called “Security Essentials 2010” appeared on the Internet. Designated TrojanDownloader: Win32 / Fakeinit by Microsoft, it bears no visual resemblance to the Microsoft product.   It reappeared in November 2010, this time calling itself “Microsoft Security Essentials 2011”.  A more dangerous rogue appeared in August 2010. Designated Rogue: Win32 / FakePAVor Unknown Win32 / Trojan , it closely resembles Microsoft Security Essentials and uses sophisticated social engineeringto deceive users and infect their systems, under the guise of five different fictional anti-malware products. It aussi Terminates and Prevents the launch of 156 different programs, Including Registry Editor , Windows Command Prompt , Internet Explorer , Mozilla Firefox , Opera , Safari and Google Chrome .   
- Comparison of antivirus software
- Comparison of firewalls
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