Mozilla - Revision history

AnotherConsumerRightsPerson: ughh

2026-03-22T17:51:46Z

ughh

← Older revision		Revision as of 17:51, 22 March 2026
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	\|Website=https://www.mozilla.org/		\|Website=https://www.mozilla.org/
	}}		}}
	'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}~~<nowiki>~~ community which develops, publishes and supports open-source software. The community is supported institutionally by the non-profit{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.		'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}} community which develops, publishes and supports open-source software. The community is supported institutionally by the non-profit {{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.

	==Consumer impact summary==		==Consumer impact summary==

AnotherConsumerRightsPerson: not working

2026-03-22T17:51:29Z

not working

← Older revision		Revision as of 17:51, 22 March 2026
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	\|Website=https://www.mozilla.org/		\|Website=https://www.mozilla.org/
	}}		}}
	'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}<nowiki> community which develops, publishes and supports open-source software. The community is supported institutionally by the ~~{{Wplink\|Nonprofit organization\|~~non-profit~~}} </nowiki>~~{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.		'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}<nowiki> community which develops, publishes and supports open-source software. The community is supported institutionally by the non-profit{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.

	==Consumer impact summary==		==Consumer impact summary==

AnotherConsumerRightsPerson: fix mistake

2026-03-22T17:45:49Z

fix mistake

← Older revision		Revision as of 17:45, 22 March 2026
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	\|Website=https://www.mozilla.org/		\|Website=https://www.mozilla.org/
	}}		}}
	'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}<nowiki> community which develops, publishes and supports open-source software. The community is supported institutionally by the {{Wplink\|Nonprofit organization\|non-profit]] </nowiki>{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.		'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}<nowiki> community which develops, publishes and supports open-source software. The community is supported institutionally by the {{Wplink\|Nonprofit organization\|non-profit}} </nowiki>{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.

	==Consumer impact summary==		==Consumer impact summary==

2001:4BC9:82B:F663:2205:B7FF:FE00:E700: 1. Remove category companies 2. fix numeric author

2026-03-21T02:37:32Z

1. Remove category companies 2. fix numeric author

← Older revision		Revision as of 02:37, 21 March 2026
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	\|Website=https://www.mozilla.org/		\|Website=https://www.mozilla.org/
	}}		}}
	'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}} community which develops, publishes and supports open-source software. The community is supported institutionally by the {{Wplink\|Nonprofit organization\|non-profit]] {{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.		'''{{Wplink\|Mozilla}}''' is a {{Wplink\|free software}}<nowiki> community which develops, publishes and supports open-source software. The community is supported institutionally by the {{Wplink\|Nonprofit organization\|non-profit]] </nowiki>{{Wplink\|Mozilla Foundation}} and its tax-paying subsidiary, the {{Wplink\|Mozilla Corporation}}.

	==Consumer impact summary==		==Consumer impact summary==
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	===Removing the "We don't sell your data" promise (''February 2025'')===		===Removing the "We don't sell your data" promise (''February 2025'')===
	In February 2025, Mozilla started to delete references to their "We don't sell your data" promise from the source code, as first reported on [https://www.haiku-os.org/ Haiku operating system] by developer ''waddlesplash'' on the forum thread for their Firefox/Iceweasel port.<ref>{{Cite web \|author=waddlesplash \|title=Iceweasel: Telemetry acceptible for Firefox trademarks? \|url=https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 \|website=Haiku OS \|date=27 Feb 2025 \|access-date=1 Mar 2026 \|url-status=live \|archive-url=http://web.archive.org/web/20250708193121/https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 \|archive-date=8 Jul 2025}}</ref><ref>{{Cite web \|author1=~~wen-2018~~		In February 2025, Mozilla started to delete references to their "We don't sell your data" promise from the source code, as first reported on [https://www.haiku-os.org/ Haiku operating system] by developer ''waddlesplash'' on the forum thread for their Firefox/Iceweasel port.<ref>{{Cite web \|author=waddlesplash \|title=Iceweasel: Telemetry acceptible for Firefox trademarks? \|url=https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 \|website=Haiku OS \|date=27 Feb 2025 \|access-date=1 Mar 2026 \|url-status=live \|archive-url=http://web.archive.org/web/20250708193121/https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 \|archive-date=8 Jul 2025}}</ref><ref>{{Cite web \|author1=Zhu \|first=Jingwen \|author2=maureenlholland \|date=25 Feb 2025 \|title=Tos copy updates (fix #16016) \|url=https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e \|url-status=live \|archive-url=http://web.archive.org/web/20260111124524/https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e \|archive-date=11 Jan 2026 \|access-date=1 Mar 2026 \|website=GitHub}}</ref>
	\|author2=maureenlholland \|title=Tos copy updates (fix #16016) \|url=https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e ~~\|website=GitHub \|date=25 Feb 2025 \|access-date=1 Mar 2026~~ \|url-status=live \|archive-url=http://web.archive.org/web/20260111124524/https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e \|archive-date=11 Jan 2026}}</ref>

	They also switched the wording from "The best privacy" to "Always protected".		They also switched the wording from "The best privacy" to "Always protected".
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	[[Category:{{PAGENAME}}]]		[[Category:{{PAGENAME}}]]
	~~[[Category:Companies]]~~

Sojourna at 03:18, 2 March 2026

2026-03-02T03:18:48Z

← Older revision		Revision as of 03:18, 2 March 2026
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	\|Founded=1998		\|Founded=1998
	\|Industry=Computing		\|Industry=Computing
	\|Logo=Mozilla ~~Logo~~ 2024~~.svg~~.png		\|Logo=Mozilla logo 2024.png
	\|ParentCompany=Mozilla Foundation		\|ParentCompany=Mozilla Foundation
	\|Type=Non-profit		\|Type=Non-profit

Sojourna: Clean-up.

2026-03-02T03:18:30Z

Clean-up.

Show changes

Bananabot: Added archive URLs for 1 citation(s) using CRWCitationBot

2026-02-23T12:41:51Z

Added archive URLs for 1 citation(s) using CRWCitationBot

← Older revision		Revision as of 12:41, 23 February 2026
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	[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ https://blog.mozilla.org/en/products/firefox/retrospective-looking-gla]		[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ https://blog.mozilla.org/en/products/firefox/retrospective-looking-gla]

	[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ ss/]</ref> While the extension was disabled by default, many users were confused and worried to discover a unknown extension installed in their browser with a cryptic description "MY REALITY IS JUST DIFFERENT THAN YOURS".<ref>Firefox's users worried about the looking glass extension https://www.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ ([http://web.archive.org/web/20230610080325/https://old.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ Archived])</ref> This description was later expanded to include references to Mozilla's collaboration.<ref>Locking glass extension description changed https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c ([http://web.archive.org/web/20250708193125/https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c Archived])</ref>		[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ ss/] ([http://web.archive.org/web/20250331150343/https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ Archived])</ref> While the extension was disabled by default, many users were confused and worried to discover a unknown extension installed in their browser with a cryptic description "MY REALITY IS JUST DIFFERENT THAN YOURS".<ref>Firefox's users worried about the looking glass extension https://www.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ ([http://web.archive.org/web/20230610080325/https://old.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ Archived])</ref> This description was later expanded to include references to Mozilla's collaboration.<ref>Locking glass extension description changed https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c ([http://web.archive.org/web/20250708193125/https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c Archived])</ref>

	When activated, the extension executes code on all websites visited by the user, searching for all words matching a list. Every match is then wrapped in HTML span tags,<ref>looking glass extension injecting HTML https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js#L27 ([http://web.archive.org/web/20250708193135/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js Archived])</ref> and tooltips are injected to be displayed when the user hovers over these matches. CSS code is injected to make the words appear upside down and the tooltips work.<ref>Looking glass extension injecting CSS https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js#L78 ([http://web.archive.org/web/20250708193126/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js Archived])</ref> Also three specific websites did have their headers changed to have a value "x-1057" injected.		When activated, the extension executes code on all websites visited by the user, searching for all words matching a list. Every match is then wrapped in HTML span tags,<ref>looking glass extension injecting HTML https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js#L27 ([http://web.archive.org/web/20250708193135/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js Archived])</ref> and tooltips are injected to be displayed when the user hovers over these matches. CSS code is injected to make the words appear upside down and the tooltips work.<ref>Looking glass extension injecting CSS https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js#L78 ([http://web.archive.org/web/20250708193126/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js Archived])</ref> Also three specific websites did have their headers changed to have a value "x-1057" injected.

Bananabot: Added archive URLs for 10 citation(s) using CRWCitationBot

2026-02-23T06:25:38Z

Added archive URLs for 10 citation(s) using CRWCitationBot

SinexTitan: prev mentioned browser's site showed a security warning and added the Tor Browser

2026-01-12T15:13:24Z

prev mentioned browser's site showed a security warning and added the Tor Browser

← Older revision		Revision as of 15:13, 12 January 2026
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	==Alternatives==		==Alternatives==
	There are other browsers using the same browser engine as Firefox, but with the telemetry and data gathering removed and privacy-friendly preferences set by default. For desktop operating systems, these include [https://librewolf.net/ LibreWolf] and [https://~~icecatbrowser~~.org/~~index.html GNU Ice Cat~~]. On Android, [https://f-droid.org/packages/org.mozilla.fennec_fdroid/ Fennec] is available through the F-Droid store.		There are other browsers using the same browser engine as Firefox, but with the telemetry and data gathering removed and privacy-friendly preferences set by default. For desktop operating systems, these include [https://librewolf.net/ LibreWolf], [https://mullvad.net/browser Mullvad Browser] and the [https://www.torproject.org/download/ Tor Browser]. On Android, [https://f-droid.org/packages/org.mozilla.fennec_fdroid/ Fennec] is available through the F-Droid store.

	Completely free alternative browsers are currently under active development, some of which show promise to become viable, truly independent, open-source browser engines in the foreseeable future. These include the browser initiated by SerenityOS creator Andreas Kling.		Completely free alternative browsers are currently under active development, some of which show promise to become viable, truly independent, open-source browser engines in the foreseeable future. These include the browser initiated by SerenityOS creator Andreas Kling.

Bythmusters: Added Cargo template in place of Infobox

2026-01-12T01:35:33Z

Added Cargo template in place of Infobox

← Older revision		Revision as of 01:35, 12 January 2026
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	{{Incomplete\|Issue 1=This page needs some work to match the format of our [[Template:CompanyPreload\| sample company page]]. Mainly in the consumer impact summary section and minor things like the see also section and dating the incidents.}}		{{Incomplete\|Issue 1=This page needs some work to match the format of our [[Template:CompanyPreload\| sample company page]]. Mainly in the consumer impact summary section and minor things like the see also section and dating the incidents.}}
			{{CompanyCargo
	{{~~InfoboxCompany~~		\|Description=American free software developer known for Firefox and Thunderbird.
	\|~~Name~~=~~Mozilla\|Type=Private~~\|Founded=1998\|Industry=~~Open Source Software, Advertising~~\|~~Official~~ Website=https://www.mozilla.org/~~\|Logo=Mozilla Logo 2024.svg.png~~}}		\|Founded=1998
			\|Industry=Computing
			\|Logo=Mozilla Logo 2024.svg.png
			\|ParentCompany=Mozilla Foundation
			\|Type=Non-profit
			\|Website=https://www.mozilla.org/
			}}
	'''[[Wikipedia:Mozilla\|Mozilla]]''' is a [[Wikipedia:Free software\|free software]] community which develops, publishes and supports open-source software. The community is supported institutionally by the [[Wikipedia:Nonprofit organization\|non-profit]] [[Wikipedia:Mozilla Foundation\|Mozilla Foundation]] and its tax-paying subsidiary, the [[Wikipedia:Mozilla Corporation\|Mozilla Corporation]].		'''[[Wikipedia:Mozilla\|Mozilla]]''' is a [[Wikipedia:Free software\|free software]] community which develops, publishes and supports open-source software. The community is supported institutionally by the [[Wikipedia:Nonprofit organization\|non-profit]] [[Wikipedia:Mozilla Foundation\|Mozilla Foundation]] and its tax-paying subsidiary, the [[Wikipedia:Mozilla Corporation\|Mozilla Corporation]].

← Older revision		Revision as of 06:25, 23 February 2026
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	==Consumer-impact summary==		==Consumer-impact summary==
	===Mozilla Manifesto===		===Mozilla Manifesto===
	Mozilla has published the community Manifesto, with 10 key principles:<ref>https://www.mozilla.org/en-US/about/manifesto/details/</ref><blockquote>		Mozilla has published the community Manifesto, with 10 key principles:<ref>https://www.mozilla.org/en-US/about/manifesto/details/ ([http://web.archive.org/web/20251223055636/https://www.mozilla.org/en-US/about/manifesto/details/ Archived])</ref><blockquote>
	#The internet is an integral part of modern life—a key component in education, communication, collaboration, business, entertainment and society as a whole.		#The internet is an integral part of modern life—a key component in education, communication, collaboration, business, entertainment and society as a whole.
	#The internet is a global public resource that must remain open and accessible.		#The internet is a global public resource that must remain open and accessible.
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	===Removing the "We don't sell your data" promise (''Feb. 2025'')===		===Removing the "We don't sell your data" promise (''Feb. 2025'')===
	In February 2025, Mozilla started to delete references to their "We don't sell your data" promise from the source code, as first reported on [https://www.haiku-os.org/ Haiku operating system] by developer ''waddlesplash'' on the forum thread for their Firefox/Iceweasel port.<ref>https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51</ref><ref>https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e</ref>		In February 2025, Mozilla started to delete references to their "We don't sell your data" promise from the source code, as first reported on [https://www.haiku-os.org/ Haiku operating system] by developer ''waddlesplash'' on the forum thread for their Firefox/Iceweasel port.<ref>https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 ([http://web.archive.org/web/20250708193121/https://discuss.haiku-os.org/t/iceweasel-telemetry-acceptible-for-firefox-trademarks/16106/51 Archived])</ref><ref>https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e ([http://web.archive.org/web/20260111124524/https://github.com/mozilla/bedrock/commit/d459addab846d8144b61939b7f4310eb80c5470e Archived])</ref>

	They also switched the wording from "The best privacy" to "Always protected".		They also switched the wording from "The best privacy" to "Always protected".
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	===Privacy-preserving attribution (''Jul. 2024'')===		===Privacy-preserving attribution (''Jul. 2024'')===
	'''Privacy-preserving attribution (PPA)''' is an experimental feature introduced in Firefox version 128, designed to help advertising sites measure the performance of their ads while maintaining user privacy. It is marketed as an alternative method for performing attribution without relying on online tracking of users' browsing activity, which is incompatible with privacy. The functionality is explained on the Mozilla support page as follows:<ref name=":0">https://support.mozilla.org/en-US/kb/privacy-preserving-attribution#w_how-can-i-disable-ppa</ref><blockquote>		'''Privacy-preserving attribution (PPA)''' is an experimental feature introduced in Firefox version 128, designed to help advertising sites measure the performance of their ads while maintaining user privacy. It is marketed as an alternative method for performing attribution without relying on online tracking of users' browsing activity, which is incompatible with privacy. The functionality is explained on the Mozilla support page as follows:<ref name=":0">https://support.mozilla.org/en-US/kb/privacy-preserving-attribution#w_how-can-i-disable-ppa ([http://web.archive.org/web/20251231225956/https://support.mozilla.org/en-US/kb/privacy-preserving-attribution Archived])</ref><blockquote>
	#Websites that show you ads can ask Firefox to remember these ads. When this happens, Firefox stores an “impression” which contains a little bit of information about the ad, including a destination website.		#Websites that show you ads can ask Firefox to remember these ads. When this happens, Firefox stores an “impression” which contains a little bit of information about the ad, including a destination website.
	#If you visit the destination website and do something that the website considers to be important enough to count (a “conversion”), that website can ask Firefox to generate a report. The destination website specifies what ads it is interested in.		#If you visit the destination website and do something that the website considers to be important enough to count (a “conversion”), that website can ask Firefox to generate a report. The destination website specifies what ads it is interested in.
	#Firefox creates a report based on what the website asks, but does not give the result to the website. Instead, Firefox encrypts the report and anonymously submits it using the Distributed Aggregation Protocol (DAP) to an “aggregation service”.		#Firefox creates a report based on what the website asks, but does not give the result to the website. Instead, Firefox encrypts the report and anonymously submits it using the Distributed Aggregation Protocol (DAP) to an “aggregation service”.
	#Your results are combined with many similar reports by the aggregation service. The destination website periodically receives a summary of the reports. The summary includes noise that provides differential privacy.		#Your results are combined with many similar reports by the aggregation service. The destination website periodically receives a summary of the reports. The summary includes noise that provides differential privacy.
	</blockquote>Browsing activity information is not sent to anyone, not even Mozilla. Users with PPA enabled, however, must rely solely on the company to honor principle number 4 in its Manifesto.<ref name=":0" /><blockquote>PPA does not involve sending information about your browsing activities to anyone. This includes Mozilla and our DAP partner (ISRG). Advertisers only receive aggregate information that answers basic questions about the effectiveness of their advertising.</blockquote>This feature does not allow users to make an informed decision and choose whether to opt in or not, as it is enabled by default and requires that the user actively opt out.<ref>https://cybernews.com/privacy/firefox-data-collection-feature-sparks-backlash/</ref> This goes against principle number 8 of the Manifesto.		</blockquote>Browsing activity information is not sent to anyone, not even Mozilla. Users with PPA enabled, however, must rely solely on the company to honor principle number 4 in its Manifesto.<ref name=":0" /><blockquote>PPA does not involve sending information about your browsing activities to anyone. This includes Mozilla and our DAP partner (ISRG). Advertisers only receive aggregate information that answers basic questions about the effectiveness of their advertising.</blockquote>This feature does not allow users to make an informed decision and choose whether to opt in or not, as it is enabled by default and requires that the user actively opt out.<ref>https://cybernews.com/privacy/firefox-data-collection-feature-sparks-backlash/ ([http://web.archive.org/web/20251013085546/https://cybernews.com/privacy/firefox-data-collection-feature-sparks-backlash/ Archived])</ref> This goes against principle number 8 of the Manifesto.

	===Anonym acquisition (''Jun. 2024'')===		===Anonym acquisition (''Jun. 2024'')===
	In June 2024, Mozilla became an advertiser by acquiring Anonym, a company claiming to be a privacy-preserving digital advertiser, potentially going against its mission of being a proponent of privacy.<ref>https://blog.mozilla.org/en/mozilla/mozilla-anonym-raising-the-bar-for-privacy-preserving-digital-advertising/</ref>		In June 2024, Mozilla became an advertiser by acquiring Anonym, a company claiming to be a privacy-preserving digital advertiser, potentially going against its mission of being a proponent of privacy.<ref>https://blog.mozilla.org/en/mozilla/mozilla-anonym-raising-the-bar-for-privacy-preserving-digital-advertising/ ([http://web.archive.org/web/20251231135703/https://blog.mozilla.org/en/mozilla/mozilla-anonym-raising-the-bar-for-privacy-preserving-digital-advertising/ Archived])</ref>

	===Mr Robot promotional web extension (''Dec. 2017'')===		===Mr Robot promotional web extension (''Dec. 2017'')===
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	[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ https://blog.mozilla.org/en/products/firefox/retrospective-looking-gla]		[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ https://blog.mozilla.org/en/products/firefox/retrospective-looking-gla]

	[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ ss/]</ref> While the extension was disabled by default, many users were confused and worried to discover a unknown extension installed in their browser with a cryptic description "MY REALITY IS JUST DIFFERENT THAN YOURS".<ref>Firefox's users worried about the looking glass extension https://www.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/</ref> This description was later expanded to include references to Mozilla's collaboration.<ref>Locking glass extension description changed https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c</ref>		[https://blog.mozilla.org/en/products/firefox/retrospective-looking-glass/ ss/]</ref> While the extension was disabled by default, many users were confused and worried to discover a unknown extension installed in their browser with a cryptic description "MY REALITY IS JUST DIFFERENT THAN YOURS".<ref>Firefox's users worried about the looking glass extension https://www.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ ([http://web.archive.org/web/20230610080325/https://old.reddit.com/r/firefox/comments/7jh9rv/what_is_looking_glass/ Archived])</ref> This description was later expanded to include references to Mozilla's collaboration.<ref>Locking glass extension description changed https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c ([http://web.archive.org/web/20250708193125/https://github.com/mozilla/addon-wr/commit/21ff53d2d5baab591d29b4ea5847d74cb6901b2c Archived])</ref>

	When activated, the extension executes code on all websites visited by the user, searching for all words matching a list. Every match is then wrapped in HTML span tags,<ref>looking glass extension injecting HTML https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js#L27</ref> and tooltips are injected to be displayed when the user hovers over these matches. CSS code is injected to make the words appear upside down and the tooltips work.<ref>Looking glass extension injecting CSS https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js#L78</ref> Also three specific websites did have their headers changed to have a value "x-1057" injected.		When activated, the extension executes code on all websites visited by the user, searching for all words matching a list. Every match is then wrapped in HTML span tags,<ref>looking glass extension injecting HTML https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js#L27 ([http://web.archive.org/web/20250708193135/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/content-script.js Archived])</ref> and tooltips are injected to be displayed when the user hovers over these matches. CSS code is injected to make the words appear upside down and the tooltips work.<ref>Looking glass extension injecting CSS https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js#L78 ([http://web.archive.org/web/20250708193126/https://github.com/mozilla/addon-wr/blob/da464ac8f1c3b089405ca96fc68b999d2b624ef4/addon/webextension/background.js Archived])</ref> Also three specific websites did have their headers changed to have a value "x-1057" injected.

	While the extension could in rare occasion break some website with the HTML and CSS injection, it did not do anything malicious or dangerous. The extension was not collecting any personal information at all, but Mozilla admitted it had made a mistake in its response addressing the issue.<ref name=":1" />		While the extension could in rare occasion break some website with the HTML and CSS injection, it did not do anything malicious or dangerous. The extension was not collecting any personal information at all, but Mozilla admitted it had made a mistake in its response addressing the issue.<ref name=":1" />