Local shared object: Difference between revisions

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{{Short description|Adobe Flash data stored on a user's computer}}

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A '''local shared object''' ('''LSO'''), commonly called a '''Flash cookie''' (due to its similarity with an [[HTTP cookie]]), is a piece of data that websites that use [[Adobe Flash]] may store on a user's computer. Local shared objects have been used by all versions of [[Flash Player]] (developed by Macromedia, which was later acquired by [[Adobe Systems]]) since version 6.<ref name="adobe-lso">{{cite web

|url = https://www.adobe.com/products/flashplayer/articles/lso/

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}}</ref>

Flash cookies, which can be stored or retrieved whenever a user accesses a page containing a Flash application, are a form of local storage. Similar to cookies, they can be used to store user preferences, save data from [[Flash game]]s, or track users' Internet activity.<ref>[{{cite web|title=When the cookies crumbled, so did your web anonymity|language=en|website=The Guardian|date=2014-10-04|access-date=2023-12-28|url=https://www.theguardian.com/technology/2014/oct/05/cookies-crumbled-internet-anonymity The Guardian newspaper, When the |archive-url=http://web.archive.org/web/20230605133635/https://www.theguardian.com/technology/2014/oct/05/cookies -crumbled, so did your web -internet-anonymity, 5 October 2014]|archive-date=2023-06-05}}</ref> LSOs have been criticised as a breach of [[browser security]], but there are now browser settings and addons to limit the duration of their storage.

== Storage ==

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As with HTTP cookies, local shared objects can be used by websites to collect information on how people navigate them, although users have taken steps to restrict data collection.<ref name="networkworld">{{cite news

|url=http://www.networkworld.com/news/2009/081109-study-adobe-flash-cookies-pose.html

|archive-url=https://web.archive.org/web/2015041820472720140404201520/http://www.networkworld.com/articlenews/2246937/applications2009/081109-study--adobe-flash-cookies-pose-vexing-privacy-questions.html

|archive-date=20152014-04-1804

|title=Study: Adobe Flash cookies pose vexing privacy questions

|work=[[Network World]]

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|first = Tanzina

|last = Vega

|author-link = Tanzina Vega

|date = 2010-09-21

|access-date = 2011-05-05

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|author=Information Commissioner's Office}}

Local shared objects were the first subject to be discussed in the [[Federal Trade Commission]] (FTC) roundtable in January 2010.<ref>{{cite web |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/01/29/BUMN1BP4MN.DTL |title=All eyes on online privacy |author=James Temple |date=2010-01-29 |publisher=San Francisco CronicleChronicle |access-date=11 February 2011}}</ref> FTC Chairman Jon Leibowitz has been talking with Adobe about what it describes as "the Flash problem."

<ref>{{cite web |url=https://www.engadget.com/2010/12/04/ftc-says-its-talking-to-adobe-about-the-problem-with-flash-cook/ |title=FTC says it's talking to Adobe about the problem with 'Flash cookies' |author=Donald Melanson |date=2010-12-04 |publisher=Engadget |access-date=11 February 2011}}</ref>

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