The Web never forgets: Persistent tracking mechanisms in the wild is the first large-scale study of three advanced web tracking mechanisms - canvas fingerprinting, evercookies and use of "cookie syncing" in conjunction with evercookies.
Number of IDs known by the parties involved in cookie sync as of May 6th, 2014. The web changes constantly; in particular, some websites may changed their behavior. Please consult the project website for the background information about cookie syncing and other advanced tracking mechanisms.
| Domain | # of IDs known |
|---|---|
| gemius.pl | 33 |
| doubleclick.net | 32 |
| 2o7.net | 27 |
| rubiconproject.com | 25 |
| omtrdc.net | 24 |
| cbsi.com | 24 |
| adnxs.com | 22 |
| openx.net | 19 |
| cloudfront.net | 18 |
| rlcdn.com | 17 |
| marinsm.com | 17 |
| bluekai.com | 17 |
| pubmatic.com | 16 |
| facebook.com | 14 |
| cxense.com | 13 |
| link-smart.com | 13 |
| addthis.com | 13 |
| contextweb.com | 12 |
| exelator.com | 11 |
| demdex.net | 11 |
| casalemedia.com | 9 |
| 360yield.com | 8 |
| lijit.com | 8 |
| turn.com | 8 |
| convertro.com | 7 |
| nexac.com | 7 |
| yahoo.com | 7 |
| aol.com | 7 |
| adscale.de | 7 |
| burstnet.com | 6 |
| kissmetrics.com | 6 |
| google-analytics.com | 6 |
| adtechus.com | 6 |
| crsspxl.com | 5 |
| mookie1.com | 5 |
| digitaltarget.ru | 5 |
| criteo.com | 5 |
| visualdna.com | 5 |
| shinobi.jp | 5 |
| adadvisor.net | 5 |
| adriver.ru | 5 |
| thebrighttag.com | 5 |
| adingo.jp | 5 |
| agkn.com | 5 |
| ru4.com | 5 |
| mathtag.com | 5 |
| adsafeprotected.com | 5 |
| liveperson.net | 4 |
| petametrics.com | 4 |
| p-td.com | 4 |
| hubspot.com | 4 |
| invitemedia.com | 4 |
| nbcuni.com | 4 |
| afy11.net | 4 |
| 2mdn.net | 4 |
| adtech.de | 4 |
| adap.tv | 4 |
| smartadserver.com | 4 |
| adhigh.net | 4 |
| href.asia | 4 |
| reuters.com | 4 |
| bidswitch.net | 4 |
| liverail.com | 4 |
| kau.li | 4 |
| twitter.com | 4 |
| acxiom-online.com | 4 |
| walmart.com.br | 4 |
| woopra.com | 3 |
| advombat.ru | 3 |
| googlesyndication.com | 3 |
| techrepublic.com | 3 |
| gotomeeting.com | 3 |
| betweendigital.com | 3 |
| genieessp-a.com | 3 |
| ic-live.com | 3 |
| mlapps.com | 3 |
| bigcommerce.com | 3 |
| crwdcntrl.net | 3 |
| tubemogul.com | 3 |
| krxd.net | 3 |
| qq.com | 3 |
| jumptap.com | 3 |
| zdnet.com | 3 |
| go.com | 3 |
| newsnow.net | 3 |
| mercadoclics.com | 3 |
| genieesspv.jp | 3 |
| gamespot.com | 3 |
| tidaltv.com | 3 |
| eyeota.net | 3 |
| gamefaqs.com | 3 |
| gsspat.jp | 3 |
| samsclub.com | 3 |
| mercadolibre.com | 3 |
| unica.com | 3 |
| yldbt.com | 3 |
| last.fm | 3 |
| hubrus.com | 3 |
| gssp-a.com | 3 |
| adeasy.ru | 3 |
| effectivemeasure.net | 3 |
| metacritic.com | 3 |
| adsrvr.org | 3 |
| serving-sys.com | 3 |
| google.com | 3 |
| mercadopago.com | 3 |
| wmt.co | 3 |
| scorecardresearch.com | 3 |
| cbs.com | 3 |
| betrad.com | 3 |
| adsymptotic.com | 3 |
| admaster.com.cn | 3 |
| tv.com | 3 |
| gssprt.jp | 3 |
| genieessp.jp | 3 |
| tapad.com | 3 |
| atdmt.com | 2 |
| atwola.com | 2 |
| theatlantic.com | 2 |
| cbssports.com | 2 |
| spotxchange.com | 2 |
| rfihub.com | 2 |
| joemonster.org | 2 |
| revsci.net | 2 |
| whisla.com | 2 |
| impact-ad.jp | 2 |
| zerohedge.com | 2 |
| alenty.com | 2 |
| rantsports.com | 2 |
| rutarget.ru | 2 |
| skimresources.com | 2 |
| msnbc.com | 2 |
| baidustatic.com | 2 |
| wallstcheatsheet.com | 2 |
| cbsi.com.cn | 2 |
| cbsnews.com | 2 |
| fool.com | 2 |
| brand-server.com | 2 |
| jump-time.net | 2 |
| googleadservices.com | 2 |
| nj.com | 2 |
| nhl.com | 2 |
| slate.com | 2 |
| baidu.com | 2 |
| siftscience.com | 2 |
| brilig.com | 2 |
| livescience.com | 2 |
| targetix.net | 2 |
| yixun.com | 2 |
| rackspace.com | 2 |
| rambler.ru | 2 |
| nick.com | 2 |
| babycenter.com | 2 |
| mtv.com | 2 |
| cnet.com | 2 |
| networksolutions.com | 2 |
| mmtro.com | 2 |
| fout.jp | 2 |
| audienceiq.com | 2 |
| dmm.com | 2 |
| uservoice.com | 2 |
| amazonaws.com | 2 |
| openstat.net | 2 |
| nbcsports.com | 2 |
| givemesport.com | 2 |
| webmd.com | 2 |
| 99designs.com | 2 |
| nfl.com | 2 |
| metrolyrics.com | 2 |
| iltasanomat.fi | 2 |
| lexpress.fr | 2 |
| raasnet.com | 2 |
| adbooth.com | 2 |
| sanoma.fi | 2 |
| cafemom.com | 2 |
| adform.net | 2 |
| switchads.com | 2 |
| hotpepper.jp | 2 |
| audible.com | 2 |
| surveymonkey.com | 2 |
| bhg.com | 2 |
| cxpublic.com | 2 |
| priceminister.com | 2 |
| getclicky.com | 2 |
| walmart.com | 2 |
| yieldmanager.com | 2 |
| yieldlab.net | 2 |
| celebuzz.com | 2 |
| medialand.ru | 2 |
| sephora.com | 2 |
| thedailybeast.com | 2 |
| pcmag.com | 2 |
| adapf.com | 2 |
| zdbb.net | 2 |
| tribune.com | 2 |
| deqwas.net | 2 |
| begun.ru | 2 |
| intencysrv.com | 2 |
| americanas.com.br | 2 |
| crowdscience.com | 2 |
| qservz.com | 2 |
| rotoworld.com | 2 |
| engadget.com | 2 |
| tvguide.com | 2 |
| 01net.com | 2 |
| facetz.net | 2 |
| imgur.com | 2 |
| thoughtcatalog.com | 2 |
| microsoft.com | 2 |
| latimes.com | 2 |
| sitescout.com | 2 |
| cosmopolitan.com | 2 |
| tmz.com | 2 |
| specificclick.net | 2 |
| adizio.com | 2 |
| jutarnji.hr | 2 |
| netsuite.com | 2 |
| wtp101.com | 2 |
| twitch.tv | 2 |
| 114.112.191.228 | 2 |
| amazon-adsystem.com | 2 |
| rvty.net | 2 |
| atemda.com | 2 |
| newyorker.com | 2 |
| nbc.com | 2 |
| ad-stir.com | 2 |
| magento.com | 2 |
| neemu.com | 1 |
| adp.com | 1 |
| ucoz.com | 1 |
| questionmarket.com | 1 |
| techcrunch.com | 1 |
| disney.com | 1 |
| gmads.net | 1 |
| rottentomatoes.com | 1 |
| tmall.com | 1 |
| odatv.com | 1 |
| oneindia.in | 1 |
| 1und1.de | 1 |
| udemy.com | 1 |
| recipevideoz.com | 1 |
| delfi.lt | 1 |
| avira.com | 1 |
| rcsmetrics.it | 1 |
| soccerway.com | 1 |
| tune.pk | 1 |
| hidemyass.com | 1 |
| tuinmueble.com.co | 1 |
| photobucket.com | 1 |
| eclick.vn | 1 |
| upworthy.com | 1 |
| flux.com | 1 |
| icast.cn | 1 |
| bigrock.com | 1 |
| hootsuite.com | 1 |
| provenpixel.com | 1 |
| chicagotribune.com | 1 |
| sitepoint.com | 1 |
| idntfy.ru | 1 |
| easyjet.com | 1 |
| mtvnservices.com | 1 |
| metrigo.com | 1 |
| everestjs.net | 1 |
| interia.pl | 1 |
| trove.com | 1 |
| infusionsoft.com | 1 |
| shaadi.com | 1 |
| inc.com | 1 |
| edgesuite.net | 1 |
| netshoes.com.br | 1 |
| wsj.com | 1 |
| mercadolibre.com.co | 1 |
| ngdata.com | 1 |
| 20min.ch | 1 |
| intentiq.com | 1 |
| wzrk.co | 1 |
| creative-serving.com | 1 |
| meteorsolutions.com | 1 |
| autoblog.com | 1 |
| admatrix.jp | 1 |
| commbank.com.au | 1 |
| schwab.com | 1 |
| rollad.ru | 1 |
| netmng.com | 1 |
| freelancer.com | 1 |
| 55bbs.com | 1 |
| scoop.it | 1 |
| ctv.ca | 1 |
| warriorforum.com | 1 |
| hotels.com | 1 |
| eleconomista.es | 1 |
| sport.cz | 1 |
| labanquepostale.fr | 1 |
| pages02.net | 1 |
| tuniu.com | 1 |
| gamer.com.tw | 1 |
| sahibinden.com | 1 |
| ulmart.ru | 1 |
| chitika.com | 1 |
| bitly.com | 1 |
| chango.com | 1 |
| verizon.com | 1 |
| xl.pt | 1 |
| hindustantimes.com | 1 |
| simpli.fi | 1 |
| almesryoon.com | 1 |
| wpengine.com | 1 |
| hulu.com | 1 |
| monster.com | 1 |
| otclick-adv.ru | 1 |
| wordpress.com | 1 |
| ceneo.pl | 1 |
| mansion.com | 1 |
| iogous.com | 1 |
| wikia-beacon.com | 1 |
| ziddu.com | 1 |
| xlovecam.com | 1 |
| askmen.com | 1 |
| truste.com | 1 |
| etao.com | 1 |
| jetblue.com | 1 |
| trb.com | 1 |
| taobao.com | 1 |
| tulancha.com.co | 1 |
| affinity.com | 1 |
| realmedia.com | 1 |
| sedo.com | 1 |
| mentad.com | 1 |
| theblaze.com | 1 |
| res-x.com | 1 |
| mama.cn | 1 |
| umbel.com | 1 |
| theglobeandmail.com | 1 |
| neimanmarcus.com | 1 |
| complex.com | 1 |
| rpp.com.pe | 1 |
| adnetwork.vn | 1 |
| egotastic.com | 1 |
| d-bi.fr | 1 |
| bigpoint.com | 1 |
| boldchat.com | 1 |
| e-generator.com | 1 |
| merchenta.com | 1 |
| gzmama.com | 1 |
| shutterfly.com | 1 |
| p161.net | 1 |
| 1and1.com | 1 |
| huffingtonpost.co.uk | 1 |
| mongoosemetrics.com | 1 |
| topsem.com | 1 |
| privatehomeclips.com | 1 |
| nbcolympics.com | 1 |
| collserve.com | 1 |
| leadformix.com | 1 |
| ce.cn | 1 |
| lequipe.fr | 1 |
| media6degrees.com | 1 |
| undertone.com | 1 |
| mercadolibre.com.ar | 1 |
| acwebconnecting.com | 1 |
| gumtree.com | 1 |
| merchantcircle.com | 1 |
| ebay.com | 1 |
| sociomantic.com | 1 |
| origo.hu | 1 |
| nike.com | 1 |
| hongkiat.com | 1 |
| insightera.com | 1 |
| gazeta.pl | 1 |
| abmr.net | 1 |
| reson8.com | 1 |
| c8.net.ua | 1 |
| zap2it.com | 1 |
| rivals.com | 1 |
| tumoto.com.co | 1 |
| ibillboard.com | 1 |
| kickstarter.com | 1 |
| smi2.ru | 1 |
| invodo.com | 1 |
| ndtv.com | 1 |
| sundaysky.com | 1 |
| tim.it | 1 |
| simplereach.com | 1 |
| pingdom.com | 1 |
| ekstrabladet.dk | 1 |
| authorize.net | 1 |
| coremetrics.com | 1 |
| eyeviewads.com | 1 |
| zopim.com | 1 |
| yashi.com | 1 |
| semrush.com | 1 |
| bigfishgames.com | 1 |
| webex.com | 1 |
| arstechnica.com | 1 |
| monsterindia.com | 1 |
| megaindex.ru | 1 |
| citrixonline.com | 1 |
| microad.jp | 1 |
| prntscr.com | 1 |
| images-amazon.com | 1 |
| similargroup.com | 1 |
| wistia.net | 1 |
| media.net | 1 |
| tbcdn.cn | 1 |
| 124.17.1.253 | 1 |
| zendesk.com | 1 |
| ib-ibi.com | 1 |
| pagesjaunes.fr | 1 |
| wistia.com | 1 |
| ipinyou.com | 1 |
| ning.com | 1 |
| venturebeat.com | 1 |
| smi2.net | 1 |
| asg.to | 1 |
| zedo.com | 1 |
| kdnet.net | 1 |
| amazon.co.uk | 1 |
| msn.com | 1 |
| aweber.com | 1 |
| nypost.com | 1 |
| ssl-images-amazon.com | 1 |
| alexa.com | 1 |
| tomshardware.com | 1 |
| bookmyshow.com | 1 |
| fmpub.net | 1 |
| letras.mus.br | 1 |
| ezakus.net | 1 |
| udn.com | 1 |
| elespectador.com | 1 |
| lightinthebox.com | 1 |
| 20minutes.fr | 1 |
| rightnowtech.com | 1 |
| trulia.com | 1 |
| dailycaller.com | 1 |
| huffingtonpost.fr | 1 |
| quantserve.com | 1 |
| acuityplatform.com | 1 |
| idtargeting.com | 1 |
| visiblemeasures.com | 1 |
| washingtonpost.com | 1 |
| o2.pl | 1 |
| livingsocial.com | 1 |
| domdex.com | 1 |
| chacha.com | 1 |
| adhands.ru | 1 |
| ojrq.net | 1 |
| eqads.com | 1 |
| mapquest.com | 1 |
| gazzetta.it | 1 |
| globo.com | 1 |
| r24-tech.com | 1 |
| eurosport.fr | 1 |
| autotrader.co.uk | 1 |
| groupon.com | 1 |
| tsn.ua | 1 |
| asana.com | 1 |
| marketwatch.com | 1 |
| sport.es | 1 |
| pswec.com | 1 |
| pro-market.net | 1 |
| livechatinc.com | 1 |
| i-mobile.co.jp | 1 |
| struq.com | 1 |
| books.com.tw | 1 |
| cnbc.com | 1 |
| smashingmagazine.com | 1 |
| ntvmsnbc.com | 1 |
| adnext.fr | 1 |
| asp.net | 1 |
| tentaculos.net | 1 |
| patheos.com | 1 |
| dyn.com | 1 |
| sedty.com | 1 |
| mirtesen.ru | 1 |
| interclick.com | 1 |
| repubblica.it | 1 |
| telecinco.es | 1 |
| adlegend.com | 1 |
| webtrendslive.com | 1 |
| cnt.my | 1 |
| vnexpress.net | 1 |
| mediapostcommunication.net | 1 |
| adshost1.com | 1 |
| to8to.com | 1 |
| webspectator.com | 1 |
| zwaar.net | 1 |
| dummies.com | 1 |
| trademe.co.nz | 1 |
| souq.com | 1 |
| telecomitalia.it | 1 |
| angsrvr.com | 1 |
| rcsadv.it | 1 |
| infobae.com | 1 |
| lonelyplanet.com | 1 |
| radaronline.com | 1 |
| chomikuj.pl | 1 |
| wikia.com | 1 |
| hotlog.ru | 1 |
| dxpmedia.com | 1 |
| sme.sk | 1 |
| finn.no | 1 |
| ibtimes.com | 1 |
| internethaber.com | 1 |
| rueducommerce.fr | 1 |
| wykop.pl | 1 |
| menshealth.com | 1 |
| istockphoto.com | 1 |
| medibaad.com | 1 |
| hln.be | 1 |
| eonline.com | 1 |
| meltdsp.com | 1 |
| atgsvcs.com | 1 |
| expressen.se | 1 |
| finam.ru | 1 |
| click.in | 1 |
| airtel.com | 1 |
| woothemes.com | 1 |
| about.me | 1 |
| realestate.com.au | 1 |
| adparlour.com | 1 |
| shopstyle.com | 1 |
| tuniu.cn | 1 |
| oyunskor.com | 1 |
| gstatic.com | 1 |
| legacy.com | 1 |
| ing.nl | 1 |
| ew.com | 1 |
| richmetrics.com | 1 |
| thekitchn.com | 1 |
| otto.de | 1 |
| health.com | 1 |
| exterest.com | 1 |
| brainyquote.com | 1 |
| yandex.ru | 1 |
| b5m.com | 1 |
| bbt.com | 1 |
| gravity.com | 1 |
| netshelter.net | 1 |
| weebly.com | 1 |
| wunderground.com | 1 |
| terra.com.br | 1 |
| wufoo.com | 1 |
| wp.pl | 1 |
| bizible.com | 1 |
| whitepages.com | 1 |
| hurpass.com | 1 |
| amazon.fr | 1 |
| ensonhaber.com | 1 |
| centrum.cz | 1 |
| medicinenet.com | 1 |
| haber7.com | 1 |
| hihi2.com | 1 |
| semasio.net | 1 |
| everesttech.net | 1 |
| fetchback.com | 1 |
| luckyorange.com | 1 |
| r7ls.net | 1 |
| donanimhaber.com | 1 |
| huluim.com | 1 |
| cars.com | 1 |
| ustream.tv | 1 |
| ign.com | 1 |
| 1and1.es | 1 |
| 1111.com.tw | 1 |
| zimbio.com | 1 |
| hollywoodreporter.com | 1 |
| tiu.ru | 1 |
| ngoisao.net | 1 |
| booking.com | 1 |
| bidorbuy.co.za | 1 |
| tomsguide.com | 1 |
| webtrends.com | 1 |
| eventbrite.com | 1 |
| imrworldwide.com | 1 |
| ad-m.asia | 1 |
| eharmony.com | 1 |
| staticlp.com | 1 |
| kompasiana.com | 1 |
| chosun.com | 1 |
| bigpoint.net | 1 |
| spylog.com | 1 |
| parsely.com | 1 |
| mediatemple.net | 1 |
| aufeminin.com | 1 |
| pages04.net | 1 |
| localytics.com | 1 |
| similarweb.com | 1 |
| bigrock.in | 1 |
| china.com.cn | 1 |
| mpstat.us | 1 |
| vg.no | 1 |
| iheart.com | 1 |
| airtel.in | 1 |
| tubecup.com | 1 |
| apartmenttherapy.com | 1 |
| wt-eu02.net | 1 |
| bing.com | 1 |
| amgdgt.com | 1 |
| tigerdirect.com | 1 |
| mamba.ru | 1 |
| rr.com | 1 |
| softlayer.com | 1 |
| bit.ly | 1 |
| tucarro.com.co | 1 |
| tsn.ca | 1 |
| firstpost.com | 1 |
| prweb.com | 1 |
| godaddy.com | 1 |
| acs86.com | 1 |
| ulogix.ru | 1 |
| theage.com.au | 1 |
| as.com | 1 |
| posst.co | 1 |
| constantcontact.com | 1 |
| rundsp.com | 1 |
| idnes.cz | 1 |
| cafemomstatic.com | 1 |
| openx.jp | 1 |
| omgts.cn | 1 |
| casino.com | 1 |
| gismeteo.ru | 1 |
| pchome.net | 1 |
| hsn.com | 1 |
| csfd.cz | 1 |
| sulekha.com | 1 |
| dmtry.com | 1 |
| collegehumor.com | 1 |
| advg.jp | 1 |
| 0427d7.se | 1 |
| 247realmedia.com | 1 |
| kankan.com | 1 |
| xunlei.com | 1 |
| huffingtonpost.com | 1 |
| elpais.com | 1 |
| admeld.com | 1 |
| gumgum.com | 1 |
| examiner.com | 1 |
| capitalone.com | 1 |
| lesechos.fr | 1 |
| gameforge.com | 1 |
| extra.com.br | 1 |
| zappos.com | 1 |
| b92.net | 1 |
| cat898.com | 1 |
| gmw.cn | 1 |
| kotobank.jp | 1 |
| salon.com | 1 |
| mackolik.com | 1 |
| webs.com | 1 |
| rare.ru | 1 |
| thenextweb.com | 1 |
| prfct.co | 1 |
| junglee.com | 1 |
| dpreview.com | 1 |
| thechive.com | 1 |
| doubleverify.com | 1 |
| optaim.com | 1 |
| mdotlabs.com | 1 |
| telegrafi.com | 1 |
| yam.com | 1 |
| agilone.com | 1 |
| chinatimes.com | 1 |
| tomshardware.co.uk | 1 |
| etracker.de | 1 |
| wikihow.com | 1 |
| emailretargeting.com | 1 |
| mercadolibre.cl | 1 |
| tasnimnews.com | 1 |
| huffingtonpost.ca | 1 |
| mlt01.com | 1 |
| myntra.com | 1 |
| twcc.com | 1 |
| am15.net | 1 |
| adition.com | 1 |
| adikteev.com | 1 |
| life.com.tw | 1 |
| ibm.com | 1 |
| forever21.com | 1 |
| displaymarketplace.com | 1 |
| kavanga.ru | 1 |
| smh.com.au | 1 |
| mundodeportivo.com | 1 |
| mail.ru | 1 |
| pulsemgr.com | 1 |
| basecamp.com | 1 |
| verizonwireless.com | 1 |
| etgdta.com | 1 |
| nordstrom.com | 1 |
| advertising.com | 1 |
| cheapoair.com | 1 |
| homedepot.com | 1 |
| technorati.com | 1 |
| speedtest.net | 1 |
| alphacdn.pl | 1 |
| onedigitalad.com | 1 |
| audtd.com | 1 |
| triggit.com | 1 |
| empowernetwork.com | 1 |
| sascdn.com | 1 |
| chase.com | 1 |
| ibtracking.com | 1 |
| qtrax.com | 1 |
| bznx.net | 1 |
| novinky.cz | 1 |
| mediaquark.com | 1 |
| teespring.com | 1 |
| crunchbase.com | 1 |
| surfingbird.ru | 1 |
| admedo.com | 1 |
| seethisinaction.com | 1 |
| lazada.co.id | 1 |
| seznam.cz | 1 |
| sapo.pt | 1 |
| okezone.com | 1 |
| segmint.net | 1 |
| ig.com.br | 1 |
| poringa.net | 1 |
| demotywatory.pl | 1 |
| hurriyet.com.tr | 1 |
| de17a.com | 1 |
| theverge.com | 1 |
| boursorama.com | 1 |
| jalan.net | 1 |
| super.cz | 1 |
| willhaben.at | 1 |
| bang5mai.com | 1 |
| patch.com | 1 |
| sciencedirect.com | 1 |
| billboard.com | 1 |
| creativecdn.com | 1 |