{"id":11255,"date":"2016-08-04T16:25:41","date_gmt":"2016-08-04T20:25:41","guid":{"rendered":"https:\/\/aptgadget.com\/?p=11255"},"modified":"2016-09-19T17:13:12","modified_gmt":"2016-09-19T21:13:12","slug":"battery-life-can-used-track-online","status":"publish","type":"post","link":"https:\/\/aptgadget.com\/de\/battery-life-can-used-track-online\/","title":{"rendered":"Ihre Akkulaufzeit kann verwendet werden, um Sie online zu verfolgen"},"content":{"rendered":"<p>A <a href=\"https:\/\/www.theguardian.com\/technology\/2015\/aug\/03\/privacy-smartphones-battery-life\">private Forschung<\/a> im vergangenen Jahr vor der M\u00f6glichkeit gewarnt, dass Website-Besitzer einen bestimmten Webstandard verwenden, um die Akkulaufzeit eines Mobilger\u00e4ts anzugeben. Diese Funktion ist als Batteriestatus-API bekannt und wurde in HTML 5 eingef\u00fchrt, das im August 2015 in Chrome, Firefox und Opera ausgeliefert wurde. Diese Version des Codes erm\u00f6glicht es den Besitzern, den Prozentsatz der verbleibenden Akkulaufzeit eines Ger\u00e4ts, die Zeit, die es zum Entladen braucht, oder sogar die Zeit, die es zum Aufladen braucht, wenn es an eine Stromquelle angeschlossen ist, zu \u00fcberwachen.<\/p>\n<p>Die Batteriestatus-API wurde mit dem Ziel eingef\u00fchrt, Website-Besitzern die M\u00f6glichkeit zu geben, Nutzern, die nur noch \u00fcber eine geringe Akkukapazit\u00e4t verf\u00fcgen, Versionen der Website und der App mit geringem Stromverbrauch anzubieten. Nach ihrer Einf\u00fchrung warnte ein privater Forscher, dass sie zum Ausspionieren von Nutzern verwendet werden k\u00f6nnte. Eine Kombination aus Akkulaufzeit und prozentualer Akkulaufzeit kann in Sekundenschnelle 14 Millionen Kombinationen liefern, die eine eindeutige Kennung f\u00fcr jedes Ger\u00e4t darstellen.<\/p>\n<p>Jetzt <a href=\"http:\/\/randomwalker.info\/publications\/OpenWPM_1_million_site_tracking_measurement.pdf\">Forscher der Princeton University<\/a> haben gezeigt, dass die Batteriestatus-API tats\u00e4chlich dazu verwendet wird, Nutzer zu verfolgen. Steve Engelhard und Arvind Narayanan stellten fest, dass beim Ausf\u00fchren eines speziell modifizierten Browsers zwei Skripte gefunden wurden, die die API f\u00fcr den \"Fingerabdruck\" eines bestimmten Ger\u00e4ts nutzten, was ihnen die M\u00f6glichkeit gab, dieses kontinuierlich \u00fcber mehrere Kontexte hinweg zu identifizieren. Im Gegensatz zu anderen Verfolgungsmechanismen wie Cookies kann die Batteriestatus-API leider nicht abgeschaltet werden. Das bedeutet, dass sie dazu verwendet werden kann, Ihre Online-Pr\u00e4senz zu verfolgen, selbst wenn Webnutzer Cookies deaktiviert haben, ein virtuelles privates Netzwerk verwenden oder einen privaten Browsing-Modus aktiviert haben.<\/p>\n<p>Sicherheitsforscher aus Princeton stellten fest, dass eine Kombination der Batteriestatus-API mit anderen Webkennungen wie der IP-Adresse und der Browsererweiterung, die bereits von einigen Websites verwendet wird, um Fingerabdr\u00fccke des Ger\u00e4ts eines Nutzers zu erstellen, die Verfolgung relativ einfach machen k\u00f6nnte. Die Forscher gaben zu, dass sie sich nicht sicher sind, wof\u00fcr die Informationen derzeit verwendet werden. Unternehmen k\u00f6nnten m\u00f6glicherweise versuchen, Nutzer mit spezifischen personalisierten Anzeigen, Produkten und Werbeaktionen anzusprechen, indem sie den einzigartigen \"digitalen Fingerabdruck\" Ihres Ger\u00e4ts verwenden.<\/p>\n<p>Die Ergebnisse der Princeton University waren <a href=\"https:\/\/blog.lukaszolejnik.com\/battery-status-readout-as-a-privacy-risk\/\">hervorgehoben von Lukasz Olejnik<\/a>Olejnik ist ein f\u00fchrender Forscher, der 2015 erstmals auf das potenzielle Problem mit der Batteriestatus-API hingewiesen hat. Olejnik hat nach seiner fr\u00fchen Warnung definitiv einen gewissen Erfolg erzielt: Die f\u00fcr die Webstandards zust\u00e4ndige Gruppe dankte seinem Team f\u00fcr die Analyse. Olejniks hat davor gewarnt, dass die Batterie-API immer noch das Potenzial f\u00fcr Missbrauch hat, obwohl sie derzeit nur f\u00fcr Skripte verwendet wird.<\/p>\n<p>Bildnachweis:news.sky<\/p>","protected":false},"excerpt":{"rendered":"<p>A private research last year warned of the possibility of site owners using a particular web standard to tell how much battery life a mobile device has. This feature is known as Battery status API and was introduced in HTML 5, which has been shipped in Chrome, Firefox, and Opera by August 2015. This version [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":11257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-11255","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Your battery life can be used to track you online - AptGadget.com<\/title>\n<meta name=\"description\" content=\"Scientist have established that your battery life, whether on the phone or on a laptop, can be used track you online. 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