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Unwanted software bundling is where unscrupulous companies confuse users into installing unwanted programs that can compromise a user's privacy or weaken their computer's security. Companies often bundle a wanted program download with a wrapper application, that forces the user to install an unwanted application, while making it hard for the user to find how to opt-out.〔(【引用サイトリンク】title=Facebook: The 'Evil Interface?' )〕〔(【引用サイトリンク】title=Facebook's "Evil Interfaces" )〕 Antivirus companies define the software bundled as potentially unwanted programs (PUP)〔〔(【引用サイトリンク】url=http://arstechnica.com/security/2009/12/av-comparatives-picks-eight-antipua-winners/ )〕 which can include software that displays intrusive advertising, or tracks the user's Internet usage to sell information to advertisers, injects its own advertising into web pages that a user looks at, or uses premium SMS services to rack up charges for the user.〔(【引用サイトリンク】url=http://about-threats.trendmicro.com/us/archive/grayware/GENERIC_GRAYWARE )〕〔(【引用サイトリンク】website=https://www.malwarebytes.org/pup/ )〕 Unwanted programs often include no sign that they are installed, and no uninstall or opt-out instructions.〔 Some unwanted software bundles include software that installs a root certificate on a user's device, which allows hackers to intercept banking details without a browser giving security warnings. The United States Department of Homeland Security has advised removing an insecure root certificate, because they make computers vulnerable to serious cyberattacks.〔 A growing number of open source software projects have expressed dismay at third party websites wrapping their downloads with unwanted bundles, without the project's knowledge or consent. Nearly every single third-party free download site bundles their downloads with potentially unwanted software.〔 Software developers and security experts recommend that people always download the latest version from the official project website, or a trusted package manager or app store. ==Origins== Historically, the first big companies working with Potentially Unwanted Programs for creating revenue, came up in the USA in the mid-2000s, such as Zango. These activities have declined, after the companies were tackled by authorities for invasive and harmful installs.〔(CDT Files Complaints Against Major Adware Distributor (archived) ) January 27, 2006〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Potentially unwanted program」の詳細全文を読む スポンサード リンク
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