Adware, often called advertising-supported software by its developers, is software that generates revenue by automatically displaying online advertisements in the user interface or on a screen presented during the installation process.
The software may generate two types of revenue: one is for the display of the advertisement and another on a "pay-per-click" basis, if the user clicks on the advertisement. Some advertisements also act as spyware, [1] collecting and reporting data about the user, to be sold or used for targeted advertising or user profiling. The software may implement advertisements in a variety of ways, including a static box display, a banner display, a full screen, a video, a pop-up ad or in some other form. All forms of advertising carry health, ethical, privacy and security risks for users.
The 2003 Microsoft Encyclopedia of Security and some other sources use the term "adware" differently: "any software that installs itself on your system without your knowledge and displays advertisements when the user browses the Internet", [2] i.e., a form of malware. Some developers offer software free of charge and rely on advertising revenue to recoup their expenses and generate income. Some offer a version without advertising, for a fee.
In legitimate software, the advertising functions are integrated into or bundled with the program. Adware is usually seen by the developer as a way to recover development costs and generate revenue. In some cases, the developer may provide the software to the user free of charge or at a reduced price. The income derived from presenting advertisements to the user may allow or motivate the developer to continue to develop, maintain and upgrade the software product. [3] The use of advertising-supported software in business is becoming increasingly popular, with a third of IT and business executives in a 2007 survey by McKinsey & Company planning to be using ad-funded software within the following two years. [4] Advertisement-funded software is also one of the business models for open-source software.
Some software is offered in both an advertising-supported mode and a paid, advertisement-free mode. The latter is usually available after buying a license or registration code that unlocks the mode or a separate version of the software. [lower-alpha 1]
Some software authors offer advertising-supported versions of their software as an alternative option to business organizations seeking to avoid paying large sums for software licenses, funding the development of the software with higher fees for advertisers. [8]
Examples of advertising-supported software include Adblock Plus ("Acceptable Ads"), [9] the Windows version of the Internet telephony application Skype, [10] and the Amazon Kindle 3 family of e-book readers, which has versions called "Kindle with Special Offers" that display advertisements on the home page and in sleep mode in exchange for substantially lower pricing. [11]
In 2012, Microsoft and its advertising division, Microsoft Advertising, [lower-alpha 2] announced that Windows 8, the major release of the Microsoft Windows operating system, would provide built-in methods for software authors to use advertising support as a business model. [13] [14] The idea had been considered since as early as 2005. [15] Most editions of Windows 10 include adware by default. [16]
Support by advertising is a popular business model of software as a service (SaaS) on the Web. Notable examples include the email service Gmail [3] [17] and other Google Workspace products (previously called Google Apps and G Suite), [4] and the social network Facebook. [18] [19] Microsoft has also adopted the advertising-supported model for many of its social software SaaS offerings. [20] The Microsoft Office Live service was also available in an advertising-supported mode. [4]
In the view of Federal Trade Commission staff, [21] there appears to be general agreement that software should be considered "spyware" only if it is downloaded or installed on a computer without the user's knowledge and consent. Unresolved issues remain concerning how, what and when consumers need to be told about software installed on their computers. For instance, distributors often disclose in an end-user license agreement that there is additional software bundled with primary software, but some participants did not view such disclosure as sufficient to infer consent.
Much of the discussion on the topic involves the idea of informed consent, the assumption being that this standard eliminates any ethical issues with any given software's behavior. If a majority of important software, websites and devices were to adopt similar behavior and only the standard of informed consent is used, then logically a user's only recourse against that behavior would become not using a computer. The contract would become an ultimatum—agree or be ostracized from the modern world. This is a form of psychological coercion and presents an ethical problem with using implied or inferred consent as a standard. There are notable similarities between this situation and binding arbitration clauses which have become inevitable in contracts in the United States.
Furthermore, certain forms and strategies of advertising have been shown to lead to psychological harm, especially in children. One example is childhood eating disorders—several studies have reported a positive association between exposure to beauty and fashion magazines and an increased level of weight concerns or eating disorder symptoms in girls. [22]
The term adware is frequently used to describe a form of malware (malicious software) [23] [24] which presents unwanted advertisements to the user of a computer. [25] [26] The advertisements produced by adware are sometimes in the form of a pop-up, sometimes in an "unclosable window" and sometimes injected into web pages. [27] [28]
When the term is used in this way, the severity of its implication varies. While some sources rate adware only as an "irritant", [29] others classify it as an "online threat" [30] or even rate it as seriously as computer viruses and trojans. [31] The precise definition of the term in this context also varies. [lower-alpha 3] Adware that observes the computer user's activities without their consent and reports it to the software's author is called spyware. [33] Adware may collect the personal information of the user, causing privacy concerns. [34] Most adware operates legally and some adware manufacturers have even sued antivirus companies for blocking adware. [35]
Programs have been developed to detect, quarantine and remove advertisement-displaying malware, including Ad-Aware, Malwarebytes' Anti-Malware, Spyware Doctor and Spybot – Search & Destroy. In addition, almost all commercial antivirus software currently detect adware and spyware, or offer a separate detection module. [36]
A new wrinkle is adware that disables anti-malware and virus protection; technical remedies are available. [35]
Adware has also been discovered in certain low-cost Android devices, particularly those made by small Chinese firms running on Allwinner systems-on-chip. There are even cases where adware code is embedded deep into files stored on the system and boot partitions, to which removal involves extensive (and complex) modifications to the firmware. [37]
In recent years, machine-learning based systems have been implemented to detect malicious adware on Android devices by examining features in the flow of network traffic. [38]
Spyware is any malware that aims to gather information about a person or organization and send it to another entity in a way that harms the user by violating their privacy, endangering their device's security, or other means. This behavior may be present in other malware and in legitimate software. Websites may engage in spyware behaviors like web tracking. Hardware devices may also be affected.
Claria Corporation was a software company based in Redwood City, California that invented “Behavioral Marketing”, a new form of online advertising. It was founded in 1998 by Denis Coleman, Stanford MBA Sasha Zorovic, and engineer Mark Pennell, based on work Zorovic had done at Stanford. In March 1999 Jeff McFadden was hired as CEO and Zorovic was effectively forced out.
BonziBuddy was a freeware desktop virtual assistant created by Joe and Jay Bonzi. Upon a user's choice, it would share jokes and facts, manage downloads, sing songs, and talk, among other functions, as it used Microsoft Agent.
Google Ads is an online advertising platform developed by Google, where advertisers bid to display brief advertisements, service offerings, product listings, and videos to web users. It can place ads in the results of search engines like Google Search, mobile apps, videos, and on non-search websites. Services are offered under a pay-per-click (PPC) pricing model.
Ad blocking or ad filtering is a software capability for blocking or altering online advertising in a web browser, an application or a network. This may be done using browser extensions or other methods.
SpywareBlaster is an antispyware and antiadware program for Microsoft Windows designed to block the installation of ActiveX malware.
Online advertising, also known as online marketing, Internet advertising, digital advertising or web advertising, is a form of marketing and advertising that uses the Internet to promote products and services to audiences and platform users. Online advertising includes email marketing, search engine marketing (SEM), social media marketing, many types of display advertising, and mobile advertising. Advertisements are increasingly being delivered via automated software systems operating across multiple websites, media services and platforms, known as programmatic advertising.
Browser hijacking is a form of unwanted software that modifies a web browser's settings without a user's permission, to inject unwanted advertising into the user's browser. A browser hijacker may replace the existing home page, error page, or search engine with its own. These are generally used to force hits to a particular website, increasing its advertising revenue.
WinFixer was a family of scareware rogue security programs developed by Winsoftware which claimed to repair computer system problems on Microsoft Windows computers if a user purchased the full version of the software. The software was mainly installed without the user's consent. McAfee claimed that "the primary function of the free version appears to be to alarm the user into paying for registration, at least partially based on false or erroneous detections." The program prompted the user to purchase a paid copy of the program.
Zango,, formerly ePIPO, 180solutions and Hotbar, was a software company that provided users access to its partners' videos, games, tools and utilities in exchange for viewing targeted advertising placed on their computers. Zango software is listed as adware by Symantec, and is also labeled as a potentially unwanted program by McAfee. Zango was co-founded by two brothers: Keith Smith, who served as the CEO; and Ken Smith, who served as the CTO.
Adaware, previously known as Lavasoft, is a software development company that produces spyware and malware detection software, including Adaware. It operates as a subsidiary of Avanquest, a division of Claranova.
The Vundo Trojan is either a Trojan horse or a computer worm that is known to cause popups and advertising for rogue antispyware programs, and sporadically other misbehavior including performance degradation and denial of service with some websites including Google and Facebook. It also is used to deliver other malware to its host computers. Later versions include rootkits and ransomware.
Rogue security software is a form of malicious software and internet fraud that misleads users into believing there is a virus on their computer and aims to convince them to pay for a fake malware removal tool that actually installs malware on their computer. It is a form of scareware that manipulates users through fear, and a form of ransomware. Rogue security software has been a serious security threat in desktop computing since 2008. An early example that gained infamy was SpySheriff and its clones, such as Nava Shield.
Privacy-invasive software is a category of software that invades a user's privacy to gather information about the user and their device without prior knowledge or consent. Such software is sometimes loosely referred to as "spyware" but the information gathering can be malicious or non-malicious. The collected data is often used commercially such as being sold to advertisers or other third parties..
Malwarebytes Inc. is an American Internet security company that specializes in protecting home computers, smartphones, and companies from malware and other threats. It has offices in Santa Clara, California; Clearwater, Florida; Tallinn, Estonia; Bastia Umbra, Italy; and Cork, Ireland.
Genieo Innovation is an Israeli company, specializing in unwanted software which includes advertising and user tracking software, commonly referred to as a potentially unwanted program, adware, privacy-invasive software, grayware, or malware. They are best known for Genieo, an application of this type. They also own and operate InstallMac which distributes additional 'optional' search modifying software with other applications. In 2014, Genieo Innovation was acquired for $34 million by Somoto, another company which "bundles legitimate applications with offers for additional third party applications that may be unwanted by the user". This sector of the Israeli software industry is frequently referred to as Download Valley.
Download Valley is a cluster of software companies in Israel, producing and delivering adware to be installed alongside downloads of other software. The primary purpose is to monetize shareware and downloads. These software items are commonly browser toolbars, adware, browser hijackers, spyware, and malware. Another group of products are download managers, possibly designed to induce or trick the user to install adware, when downloading a piece of desired software or mobile app from a certain source.
A potentially unwanted program (PUP) or potentially unwanted application (PUA) is software that a user may perceive as unwanted or unnecessary. It is used as a subjective tagging criterion by security and parental control products. Such software may use an implementation that can compromise privacy or weaken the computer's security. Companies often bundle a wanted program download with a wrapper application and may offer to install an unwanted application, and in some cases without providing a clear opt-out method. Antivirus companies define the software bundled as potentially unwanted programs which can include software that displays intrusive advertising (adware), or tracks the user's Internet usage to sell information to advertisers (spyware), injects its own advertising into web pages that a user looks at, or uses premium SMS services to rack up charges for the user. 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 third-party free download site bundles their downloads with potentially unwanted software. The practice is widely considered unethical because it violates the security interests of users without their informed consent. Some unwanted software bundles install a root certificate on a user's device, which allows hackers to intercept private data such as 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. 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.
Windows 10, a proprietary operating system released by Microsoft in July 2015, has been criticized by reviewers and users. Due to issues mostly about privacy, it has been the subject of a number of negative assessments by various groups.
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: CS1 maint: numeric names: authors list (link)The terms 'spyware' and 'adware' apply to several different [malware] technologies...
malware also includes worms, spyware and adware.
[Adware] delivers advertising content potentially in a manner or context that may be unexpected and unwanted by users.
Adware: type of malware that allows popup ads on a computer system, ultimately taking over a user's Internet browsing.
[Adware] tend[s] to be more of an irritant than do actual damage to your system, but [is] an unwanted presence nonetheless.
online threats, such as spyware, spam, phishing, adware, viruses and other malware...Copy available at Bloomberg.
Adware has become a bad word, linked to spyware and privacy violations by everyone except the publishers of the products... [it was] a good thing ten or fifteen years ago, and [is] bad now... [t]he lines for adware are even being blended into virus and trojan territory.