{"id":92955,"date":"2020-09-01T19:42:04","date_gmt":"2020-09-01T17:42:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/identifikacziya-polzovatelej-po-istorii-poseshhenij-v-brauzere"},"modified":"2020-09-01T19:42:04","modified_gmt":"2020-09-01T17:42:04","slug":"identifikacziya-polzovatelej-po-istorii-poseshhenij-v-brauzere","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/news\/identifikacziya-polzovatelej-po-istorii-poseshhenij-v-brauzere","title":{"rendered":"Identificatie van gebruikers op basis van browsergeschiedenis","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Medewerkers van Mozilla <noindex><a rel=\"nofollow\" href=\"https:\/\/www.usenix.org\/system\/files\/soups2020-bird.pdf\">hebben<\/a><\/noindex> resultaten van het onderzoek naar de mogelijkheid om gebruikers te identificeren op basis van het browseprofiel, dat zichtbaar kan zijn voor derden en websites. Een analyse van 52.000 browseprofielen van Firefox-gebruikers die deelnamen aan het experiment, liet zien dat de voorkeuren voor het bezoeken van websites kenmerkend zijn voor elke gebruiker en constant blijven. De uniciteit van de verkregen browsegeschiedenisprofielen was 99%. De hoge mate van uniciteit blijft behouden, zelfs als de steekproef wordt beperkt tot honderd populaire websites.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.usenix.org\/system\/files\/soups2020-bird.pdf\"><img decoding=\"async\" alt=\"Identificatie van gebruikers op basis van browsergeschiedenis\" src=\"\/wp-content\/uploads\/2020\/09\/ec19f1a0a62082894469ae38b7560dd0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Een controle op de mogelijkheid voor heridentificatie vond plaats tijdens een twee weken durend experiment \u2014 data over bezoeken in de eerste week werden geprobeerd te vergelijken met data van de tweede week. Het bleek dat 50% van de gebruikers opnieuw kon worden ge\u00efdentificeerd als ze 50 of meer verschillende domeinen hadden bezocht. Bij het bezoeken van 150 of meer verschillende domeinen steeg het percentage heridentificatie tot 80%. De controle werd uitgevoerd op een steekproef van 10.000 websites om data te simuleren die grote contentproviders kunnen verkrijgen (bijvoorbeeld, Google kan toegang hebben tot 9823 websites uit deze 10.000, Facebook tot 7348, en Verizon tot 5500).<\/p>\n<p>Deze eigenschap stelt grote eigenaren van populaire resources in staat om gebruikers met een redelijke zekerheid te identificeren. Bijvoorbeeld, bedrijven zoals Google, Facebook en Twitter, wiens widgets op externe websites zijn geplaatst, kunnen theoretisch ongeveer 80% van de gebruikers opnieuw identificeren.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.usenix.org\/system\/files\/soups2020-bird.pdf\"><img decoding=\"async\" alt=\"Identificatie van gebruikers op basis van browsergeschiedenis\" src=\"\/wp-content\/uploads\/2020\/09\/cf27e6a034cb2c6bc98d06cc3ad0818b.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Eerdere geopende websites kunnen ook indirect worden bepaald, bijvoorbeeld door een doorloop in de JavaScript-code van populaire domeinen waarbij de verschillen in laadvertragingen van resources worden ge\u00ebvalueerd \u2014 als een website recentelijk door de gebruiker is geopend, zal de resource bijna onmiddellijk uit de browsercache worden geleverd. Eerder konden voor de identificatie van geopende pagina's worden toegepast <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50872\">een beoordeling<\/a><\/noindex> HSTS-configuratiecache (bij het openen van een HSTS-site werd de HTTP-aanroep onmiddellijk omgeleid naar HTTPS zonder een verzoek via HTTP) en <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=26038\">de analyse<\/a><\/noindex> de status van de CSS-eigenschap \u2018visited\u2019. <\/p>\n<p>Dergelijke methoden voor het bepalen van browsegeschiedenis op basis van CSS zijn gebruikt in een vergelijkbaar onderzoek, <noindex><a rel=\"nofollow\" href=\"https:\/\/hal.inria.fr\/hal-00747841\/document\">uitgevoerd<\/a><\/noindex> Van 2009 tot 2011. Dit onderzoek toonde de mogelijkheid aan om 42% van de gebruikers te identificeren bij het controleren van 50 pagina's en 70% bij het controleren van 500 pagina's. Onderzoek van Mozilla <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.lukaszolejnik.com\/web-browsing-histories-are-private-personal-data-now-what\/\">bevestigde<\/a><\/noindex> en verduidelijkte de conclusies van de vorige publicatie, waarbij de nauwkeurigheid van het bepalen van het browseverleden aanzienlijk werd verhoogd, en het aantal gecontroleerde domeinen werd uitgebreid van 6000 naar 10000 (in totaal werden gegevens over 660000 domeinen verkregen, maar bij het beoordelen van de identificatie werd een steekproef van de 10.000 meest populaire domeinen gebruikt). <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Bron: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53635\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u0438 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