buzzfeed.com
Heading to buzzfeed.com? Heads up: it’ll track you. 32 companies follow visitors from here.
Privacy grade27 Oct 2026
F
Heavy tracking seen
10/100
- 4 tracking companies were seen loading before any choice was made
- 3 tracking companies were seen after we clicked reject
- The banner asked visitors to accept 97 ad-industry “partners”
- 32 cross-site tracking companies were seen after accepting
Tracking companies seen32 can follow people across sites35
Seen before any choice4 can follow people across sites6
Cross-site trackers after rejectafter we clicked “ESSENTIAL COOKIES ONLY”3
Ad “partners” in the bannerconsent tool: Sourcepoint97
Countries data went to22 server locations9
Third-party cookiesset after accepting136
Where the data went
From our checker in London to 22 tracker server locations in 9 countries. Drag to spin.
- Advertising
- Data broker
- Analytics
- Social
- Our checker (London)
Server locations
Tap one to find it on the globe
Companies
Who showed up
- 01TTeadsContent recommendation and video ads · New York · servers in London, SloughAdvertisingBeforeAfter rejectAfter accept
- 02AAmazon AdsAd network · Seattle · servers in London, DusseldorfAdvertisingBeforeAfter rejectAfter accept
- 03GGoogleAd network, analytics and search · Mountain View · servers in Dublin, Palo AltoAdvertisingBeforeAfter rejectAfter accept
- 04PPermutiveAudience data for publishers · London · servers in LondonData brokerBeforeAfter rejectAfter accept
- 05CChartbeatAudience analytics · New York · servers in Seattle (South Lake Union)AnalyticsBeforeAfter rejectAfter accept
- 06CComscoreAudience measurement · Reston · servers in DublinAnalyticsBeforeAfter rejectAfter accept
- 07MMicrosoftAd network and analytics · Redmond · servers in Dublin, DoylestownAdvertisingBeforeAfter rejectAfter accept
- 08TThe Trade DeskAd buying platform and identity (UID2) · Ventura · servers in Seattle (South Lake Union)AdvertisingBeforeAfter rejectAfter accept
- 09AAdformAd platform · Copenhagen · servers in CopenhagenAdvertisingBeforeAfter rejectAfter accept
- 10AAdobeMarketing analytics and ad platform · San Jose · servers in Frankfurt am Main, AshburnAdvertisingBeforeAfter rejectAfter accept
- 11CCriteoRetargeting ad network · Paris · servers in Paris, GroningenAdvertisingBeforeAfter rejectAfter accept
- 12DDoubleVerifyAd verification · New York · servers in London, Toronto (Old Toronto)AdvertisingBeforeAfter rejectAfter accept
- 13EEpsilonMarketing data (data broker) · Irving, TX · servers in Frankfurt am MainData brokerBeforeAfter rejectAfter accept
- 14EEquativAd exchange · Paris · servers in Groningen, AmsterdamAdvertisingBeforeAfter rejectAfter accept
- 15EExperianCredit bureau and identity data · Dublin · servers in Kansas CityData brokerBeforeAfter rejectAfter accept
- 16GGumGumContextual ads · Santa Monica · servers in DublinAdvertisingBeforeAfter rejectAfter accept
- 17IID5Shared ad identity · London · servers in Montreal, RoubaixData brokerBeforeAfter rejectAfter accept
- 18IIndex ExchangeAd exchange · Toronto · servers in Toronto (Old Toronto), Frankfurt am MainAdvertisingBeforeAfter rejectAfter accept
- 19KKargoMobile ads · New York · servers in Frankfurt am MainAdvertisingBeforeAfter rejectAfter accept
- 20LLinkedInProfessional network and ad platform · Sunnyvale · servers in LondonAdvertisingBeforeAfter rejectAfter accept
- 21LLiveRampIdentity graph (data broker) · San Francisco · servers in Kansas CityData brokerBeforeAfter rejectAfter accept
- 22LLotameData platform (data broker) · Columbia, MD · servers in Frankfurt am Main, DublinData brokerBeforeAfter rejectAfter accept
- 23MMagniteAd exchange · Los Angeles · servers in Amsterdam, AshburnAdvertisingBeforeAfter rejectAfter accept
- 24MMedia.netContextual ads · Dubai · servers in Kansas City, MinneapolisAdvertisingBeforeAfter rejectAfter accept
- 25MMetaSocial network and ad platform · Menlo Park · servers in DublinSocialBeforeAfter rejectAfter accept
- 26OOpenXAd exchange · Pasadena · servers in Kansas CityAdvertisingBeforeAfter rejectAfter accept
- 27PPubMaticAd exchange · Redwood City · servers in Singapore, LondonAdvertisingBeforeAfter rejectAfter accept
- 28QQuantcastAudience data and ads · San Francisco · servers in AshburnAdvertisingBeforeAfter rejectAfter accept
- 29RRTB HouseRetargeting ad network · Warsaw · servers in Kansas City, AmsterdamAdvertisingBeforeAfter rejectAfter accept
- 30SSeedtagContextual ads · Madrid · servers in Kansas CityAdvertisingBeforeAfter rejectAfter accept
- 31SSovrnAd exchange · Boulder · servers in DublinAdvertisingBeforeAfter rejectAfter accept
- 32TTaboolaContent recommendation ads · New York · servers in Frankfurt am Main, LondonAdvertisingBeforeAfter rejectAfter accept
- 33TTripleLiftAd exchange (native ads) · New York · servers in Frankfurt am MainAdvertisingBeforeAfter rejectAfter accept
- 34YYahooAd network · New York · servers in LondonAdvertisingBeforeAfter rejectAfter accept
- 35CCloudflare Web AnalyticsWeb analytics (cookieless) · San Francisco · servers in MontrealAnalyticsBeforeAfter rejectAfter accept
From our last check on 27 Oct 2026 from London: homepage only, three fresh visits (did nothing, clicked reject, clicked accept). Server locations are approximate, from the IP addresses we connected to. Some requests after rejecting may be strictly necessary services; this is what we observed, not proof that the site broke the law. How we check · Run this site? Ask for a re-check or add a statement
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