{"id":92490,"date":"2020-08-27T19:42:37","date_gmt":"2020-08-27T17:42:37","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/30-iz-tysyachi-krupnejshih-sajtov-ispolzuyut-skripty-dlya-skrytoj-identifikaczii"},"modified":"2020-08-27T19:42:37","modified_gmt":"2020-08-27T17:42:37","slug":"30-iz-tysyachi-krupnejshih-sajtov-ispolzuyut-skripty-dlya-skrytoj-identifikaczii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/30-iz-tysyachi-krupnejshih-sajtov-ispolzuyut-skripty-dlya-skrytoj-identifikaczii","title":{"rendered":"30% dintre cele mai mari o mie de site-uri folosesc scripturi pentru identificarea ascuns\u0103.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Un grup de cercet\u0103tori de la Mozilla, Universitatea din Iowa \u0219i Universitatea din California a publicat<\/a><\/noindex> au studiat aplicarea codurilor de identificare ascuns\u0103 pe site-uri. Identificarea ascuns\u0103 se refer\u0103 la generarea de identificatori pe baza datelor indirecte despre func\u021bionarea browser-ului, cum ar fi rezolu\u021bia ecranului<\/a><\/noindex>, lista tipurilor MIME acceptate, parametrii specifici din antet (HTTP\/2<\/a><\/noindex> \u0219i HTTPS<\/a><\/noindex>), analiza plugin-urilor \u0219i fonturilor instalate , disponibilitatea anumitor API-uri Web, specifice pl\u0103cilor video<\/a><\/noindex>caracteristici grafica realizat\u0103 prin WebGL \u0219i<\/a><\/noindex> Canvas manipul\u0103ri<\/a><\/noindex>, cu CSS,<\/a><\/noindex> considerarea valorilor implicite scanarea<\/a><\/noindex>, porturilor re\u021belei, analiza caracteristicilor de lucru cu<\/a><\/noindex> Studiul a 100.000 dintre cele mai populare site-uri conform clasamentului Alexa a ar\u0103tat c\u0103 codul pentru identificarea ascuns\u0103 este folosit pe 9040 dintre ele (10.18%). \u00cen cazul celor o mie de site-uri cele mai populare, un astfel de cod a fost identificat \u00een 30.60% din cazuri (266 de site-uri), iar printre site-urile care ocup\u0103 locuri \u00eentre o mie \u0219i zece mii, \u00een 24.45% din cazuri (2010 site-uri). \u00cen principal, identificarea ascuns\u0103 este utilizat\u0103 \u00een scripturile furnizate de servicii externe pentru mouse-ul<\/a><\/noindex> \u0219i tastatura<\/a><\/noindex>.<\/p>\n

combatarea fraudei \u0219i filtrarea botilor, precum \u0219i de re\u021belele publicitare \u0219i sistemele de urm\u0103rire a comportamentului utilizatorilor.<\/a><\/noindex> Pentru a detecta codul care realizeaz\u0103 identificarea ascuns\u0103, a fost dezvoltat un instrument
\n

\"30%<\/a><\/noindex><\/center><\/p>\n

FP-Inspector , al c\u0103rui cod<\/a><\/noindex>este oferit sub licen\u021ba MIT. Instrumentul utilizeaz\u0103 metode de \u00eenv\u0103\u021bare automat\u0103, \u00eempreun\u0103 cu analiza static\u0103 \u0219i dinamic\u0103 a codului JavaScript. Se afirm\u0103 c\u0103 utilizarea \u00eenv\u0103\u021b\u0103rii automate a permis \u00eembun\u0103t\u0103\u021birea semnificativ\u0103 a preciziei \u00een identificarea codului pentru identificarea ascuns\u0103 \u0219i a identificat cu 26% mai multe scripturi problematice<\/a><\/noindex> comparativ cu o heuristic\u0103 stabilit\u0103 manual.
\nMulte dintre scripturile de identificare identificate nu figurau \u00een listele tipice de blocare <\/p>\n

Disconnect Adsafe<\/a><\/noindex>, , DuckDuckGo,<\/a><\/noindex>Justuno EasyPrivacy<\/a><\/noindex> \u0219i Dup\u0103 trimiterea<\/a><\/noindex>.
\nnotific\u0103rii de c\u0103tre dezvoltatorii listei de blocare EasyPrivacy, a fost<\/a><\/noindex> creat o sec\u021biune separat\u0103 pentru scripturile de identificare ascuns\u0103. \u00cen plus, FP-Inspector a permis identificarea unor moduri noi de utilizare a API-urilor Web pentru identificare, care nu au fost \u00eent\u00e2lnite anterior \u00een practic\u0103.<\/a><\/noindex> o sec\u021biune separat\u0103 pentru scripturi de identificare ascuns\u0103. \u00cen plus, FP-Inspector a permis descoperirea unor noi metode de utilizare a Web API pentru identificare, care anterior nu au fost \u00eent\u00e2lnite \u00een practic\u0103.<\/p>\n

De exemplu, a fost identificat\u0103 utilizarea informa\u021biilor pentru identificarea aranjamentului de tastatur\u0103 (getLayoutMap), a datelor reziduale din cache (prin API-ul Performance se analizeaz\u0103 \u00eent\u00e2rzierile la livrarea datelor, ceea ce permite determinarea dac\u0103 utilizatorul a accesat un domeniu anume sau nu, precum \u0219i dac\u0103 pagina a fost deschis\u0103 anterior), a drepturilor atribuite \u00een browser (informa\u021bii despre accesul la Notification, Geolocation \u0219i Camera API), existen\u021ba de dispozitive periferice specializate \u0219i senzori rar utiliza\u021bi (gamepad-uri, c\u0103\u0219ti de realitate virtual\u0103, senzori de apropiere). \u00cen plus, s-a \u00eenregistrat o aten\u021bie asupra identific\u0103rii prezen\u021bei API specializate pentru anumite browsere \u0219i asupra diferen\u021belor de comportament ale API-ului (AudioWorklet, setTimeout, mozRTCSessionDescription), precum \u0219i utilizarea API-ului AudioContext pentru a determina caracteristicile sistemului audio. <\/p>\n

\u00cen cadrul studiului a fost de asemenea investigat\u0103 problema afect\u0103rii func\u021bionalit\u0103\u021bii standard a site-urilor \u00een cazul aplic\u0103rii metodelor de protec\u021bie \u00eempotriva identific\u0103rii ascunse, care duc la blocarea cererilor de re\u021bea sau la restric\u021bionarea accesului la API. S-a ar\u0103tat c\u0103 restric\u021bionarea selectiv\u0103 a API-ului doar pentru scripturile identificate de FP-Inspector duce la mai pu\u021bine \u00eentreruperi \u00een func\u021bionare, dec\u00e2t utilizarea unor restric\u021bii generale mai dure asupra apelurilor API \u00een Brave \u0219i Tor Browser, care pot duce la scurgeri de date.<\/p>\n

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

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

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

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