{"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\/it\/blog\/novosti-interneta\/identifikacziya-polzovatelej-po-istorii-poseshhenij-v-brauzere","title":{"rendered":"Identificazione degli utenti attraverso la cronologia delle visite nel browser.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dipendenti dell'azienda Mozilla hanno pubblicato<\/a><\/noindex> i risultati di uno studio sulla possibilit\u00e0 di identificare gli utenti in base al profilo di navigazione, che pu\u00f2 essere visibile a terzi e siti web. L'analisi di 52.000 profili di navigazione forniti da utenti di Firefox che hanno partecipato all'esperimento ha dimostrato che le preferenze di navigazione sono caratteristiche di ogni singolo utente e costanti. L'unicit\u00e0 dei profili di cronologia di navigazione ottenuti \u00e8 stata del 99%. Inoltre, un elevato grado di unicit\u00e0 dei profili rimane anche limitando il campione solo a un centinaio di siti popolari.<\/p>\n

\"Identificazione<\/a><\/noindex><\/center><\/p>\n

La verifica della possibilit\u00e0 di re-identificazione \u00e8 stata effettuata nell'ambito di un esperimento di due settimane \u2014 i dati delle visite nella prima settimana sono stati confrontati con i dati della seconda settimana. \u00c8 emerso che si possono re-identificare il 50% degli utenti che hanno visitato 50 o pi\u00f9 domini diversi. Quando si visitano 150 o pi\u00f9 domini diversi, la copertura della re-identificazione aumenta fino all'80%. Il controllo \u00e8 stato eseguito su un campione di 10.000 siti per simulare i dati che potrebbero ottenere grandi fornitori di contenuti (ad esempio, Google pu\u00f2 monitorare le visite a 9823 siti di questi 10000, Facebook a 7348, Verizon a 5500).<\/p>\n

Questa caratteristica consente ai grandi proprietari di risorse popolari di identificare gli utenti con un'alta probabilit\u00e0. Ad esempio, le aziende Google, Facebook e Twitter, il cui widget \u00e8 integrato in siti di terzi, possono teoricamente ri-identificare circa l'80% degli utenti.<\/p>\n

\"Identificazione<\/a><\/noindex><\/center><\/p>\n

Determinare i siti precedentemente aperti pu\u00f2 anche essere fatto tramite metodi indiretti, ad esempio controllando nel codice JavaScript domini popolari valutando la differenza di latenza nel caricamento delle risorse \u2014 se il sito \u00e8 stato aperto di recente dall'utente, la risorsa verr\u00e0 recuperata quasi istantaneamente dalla cache del browser. In passato, per determinare le pagine aperte si potevano utilizzare valutazione<\/a><\/noindex> caching delle impostazioni HSTS (quando un sito con HSTS viene aperto, la richiesta HTTP viene immediatamente reindirizzata a HTTPS senza tentare di accedere a HTTP) e analisi<\/a><\/noindex> stati della propriet\u00e0 CSS \"visited\". <\/p>\n

Metodi simili per determinare la cronologia delle visite basati su CSS sono stati utilizzati in una ricerca simile condotta<\/a><\/noindex> dal 2009 al 2011. Questa ricerca ha mostrato la possibilit\u00e0 di identificare il 42% degli utenti controllando 50 pagine e il 70% controllando 500 pagine. La ricerca di Mozilla ha confermato<\/a><\/noindex> e ha precisato le conclusioni della pubblicazione precedente, aumentando significativamente la precisione della determinazione della cronologia delle visite, e ampliando la gamma dei domini controllati da 6000 a 10000 (sono stati ottenuti dati su 660000 domini in totale, ma per la valutazione dell'identificazione \u00e8 stato utilizzato un campione di 10 mila domini pi\u00f9 popolari). <\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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L'analisi di 52.000 profili di navigazione forniti dagli utenti di Firefox che hanno partecipato all'esperimento ha mostrato che le preferenze nella visita ai siti sono caratteristiche di ogni utente e rimangono costanti. L'unicit\u00e0 dei profili di cronologia delle visite ottenuti \u00e8 stata del 99%. 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