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How can i make sure that only the website that sets the cookie can read it?

Posted

I want some websites to be able to store cookies and use them, but i don't want other sites to use those same cookies. I know how to allow/allow per session/block and i even have cookie managing extensions. What i can't find anywhere is information on who can read those cookies once they are set.

Chosen solution

Only the website (server or domain) that sets a cookie can read that cookie, but there can be an iframe embedded with a different domain that sets so called third-party cookies.

You can disable third-party cookies.

Read this answer in context 12

Additional System Details

Installed Plug-ins

  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 10.3 r183
  • Next Generation Java Plug-in 10.17.2 for Mozilla browsers
  • Pando Web Plugin
  • 5.1.20125.0
  • Bitdefender QuickScan Web Netscape Plugin

Application

  • Firefox 19.0.2
  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:19.0) Gecko/20100101 Firefox/19.0
  • Support URL: http://support.mozilla.org/1/firefox/19.0.2/WINNT/en-US/

Extensions

  • Adblock Plus 2.2.3 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d})
  • BetterPrivacy 1.68 ({d40f5e7b-d2cf-4856-b441-cc613eeffbe3})
  • Bitdefender QuickScan 0.9.9.119 ({e001c731-5e37-4538-a5cb-8168736a2360})
  • BugMeNot 2.2 ({987311C6-B504-4aa2-90BF-60CC49808D42})
  • CheckPlaces 2.6.2 (checkplaces@andyhalford.com)
  • Cookie Monster 1.1.0 ({45d8ff86-d909-11db-9705-005056c00008})
  • CookieCuller 1.4 ({99B98C2C-7274-45a3-A640-D9DF1A1C8460})
  • Cookies Manager+ 1.5.1.1 ({bb6bc1bb-f824-4702-90cd-35e2fb24f25d})
  • Download Manager Tweak 0.9.6 ({F8A55C97-3DB6-4961-A81D-0DE0080E53CB})
  • Download Statusbar 0.9.10 ({D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389})
  • DownThemAll! 2.0.15 ({DDC359D1-844A-42a7-9AA1-88A850A938A8})
  • Ecosia - The Green Search 2.0.6 ({d04b0b40-3dab-4f0b-97a6-04ec3eddbfb0})
  • Extended Statusbar 1.5.8 ({daf44bf7-a45e-4450-979c-91cf07434c3d})
  • FEBE 7.1.0 ({4BBDD651-70CF-4821-84F8-2B918CF89CA3})
  • FireShot 0.98.31 ({0b457cAA-602d-484a-8fe7-c1d894a011ba})
  • Flash and Video Download 1.29 ({bee6eb20-01e0-ebd1-da83-080329fb9a3a})
  • FoxyProxy Standard 4.2 (foxyproxy@eric.h.jung)
  • gui:config 1.2.2 (guiconfig@slosd.net)
  • Image Zoom 0.4.6 ({1A2D0EC4-75F5-4c91-89C4-3656F6E44B68})
  • LastPass 2.0.20 (support@lastpass.com)
  • Microsoft .NET Framework Assistant 1.3.1 ({20a82645-c095-46ed-80e3-08825760534b})
  • Mozilla Archive Format 2.0.9 ({7f57cf46-4467-4c2d-adfa-0cba7c507e54})
  • NoScript 2.6.5.8 ({73a6fe31-595d-460b-a920-fcc0f8843232})
  • Personal Menu 5.1.0 (CompactMenuCE@Merci.chao)
  • Places Maintenance 1.3 (places-maintenance@bonardo.net)
  • RefControl 0.8.16 ({455D905A-D37C-4643-A9E2-F6FEFAA0424A})
  • SaveFrom.net helper 1.72 (helper@savefrom.net)
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • UI Fixer 1.4.4 (ff4uifix@nikolakocic.com)
  • Vacuum Places Improved 1.2 (VacuumPlacesImproved@lultimouomo-gmail.com)
  • Webmail Ad Blocker 3.9.1 (gmailnoads@mywebber.com)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: NVIDIA GeForce 7600 GT
  • adapterDescription2:
  • adapterDeviceID: 0x0391
  • adapterDeviceID2:
  • adapterDrivers: nv4_disp
  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'']
  • directWriteEnabled: False
  • directWriteVersion: 0.0.0.0
  • driverDate: 1-31-2013
  • driverDate2:
  • driverVersion: 6.14.13.783
  • driverVersion2:
  • info: {u'AzureContentBackend': u'none', u'AzureCanvasBackend': u'cairo', u'AzureFallbackCanvasBackend': u'none'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webglRenderer: Google Inc. -- ANGLE (NVIDIA GeForce 7600 GT )
  • windowLayerManagerType: Direct3D 9

Modified Preferences

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 512000
  • browser.cache.disk.parent_directory: C:\Temp
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.places.smartBookmarksVersion: 10
  • browser.search.openintab: True
  • browser.search.useDBForOrder: True
  • browser.sessionstore.max_resumed_crashes: 3
  • browser.sessionstore.max_windows_undo: 2
  • browser.startup.homepage_override.buildID: 20130307023931
  • browser.startup.homepage_override.mstone: 19.0.2
  • browser.tabs.animate: False
  • browser.tabs.loadDivertedInBackground: True
  • browser.tabs.tabClipWidth: 50
  • browser.tabs.tabMinWidth: 75
  • browser.urlbar.default.behavior: 24
  • browser.urlbar.maxRichResults: 10
  • dom.disable_window_move_resize: True
  • dom.ipc.plugins.processLaunchTimeoutSecs: 60
  • dom.ipc.plugins.timeoutSecs: 60
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 19.0.2
  • general.useragent.extra.microsoftdotnet: (.NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E; .NET CLR 1.1.4322)
  • gfx.content.azure.enabled: False
  • gfx.direct3d.prefer_10_1: True
  • javascript.options.strict: True
  • network.cookie.alwaysAcceptSessionCookies: True
  • network.cookie.cookieBehavior: 1
  • network.cookie.lifetimePolicy: 2
  • network.cookie.prefsMigrated: True
  • network.http.max-connections: 64
  • network.http.max-connections-per-server: 16
  • network.http.max-persistent-connections-per-server: 8
  • network.http.pipelining: True
  • network.http.pipelining.maxrequests: 4
  • network.http.proxy.pipelining: True
  • places.database.lastMaintenance: 1364063812
  • places.history.expiration.transient_current_max_pages: 53664
  • plugin.allow.asyncdrawing: True
  • plugin.disable_full_page_plugin_for_types: application/pdf,application/vnd.adobe.xfdf,application/vnd.fdf
  • plugin.expose_full_path: True
  • plugin.scan.Acrobat: -1
  • plugin.scan.Quicktime: -1
  • plugin.scan.SunJRE: -1
  • plugins.click_to_play: True
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • security.dialog_enable_delay: 50
  • security.warn_viewing_mixed: False
  • security.warn_viewing_mixed.show_once: False

Misc

  • User JS: No
  • Accessibility: No
cor-el
  • Top 10 Contributor
  • Moderator
10739 solutions 96645 answers

Chosen Solution

Only the website (server or domain) that sets a cookie can read that cookie, but there can be an iframe embedded with a different domain that sets so called third-party cookies.

You can disable third-party cookies.