{"id":55112,"date":"2025-11-20T12:08:15","date_gmt":"2025-11-20T11:08:15","guid":{"rendered":"https:\/\/aboutsignal.com\/?p=55112"},"modified":"2025-12-10T11:40:35","modified_gmt":"2025-12-10T10:40:35","slug":"whatsapp-leak-zwei-milliarden-profilbilder-und-persoenliche-informationen-fuer-alle-zugaenglich","status":"publish","type":"post","link":"https:\/\/aboutsignal.com\/de\/news\/whatsapp-leak-two-billion-profile-pictures-and-personal-information-accessible-to-everyone\/","title":{"rendered":"WhatsApp-Leak: Zwei Milliarden Profilbilder und pers\u00f6nliche Informationen f\u00fcr alle zug\u00e4nglich"},"content":{"rendered":"<p><strong>Forscher*innen haben herausgefunden, dass sie \u00fcber WhatsApp rund 2 Milliarden Profilbilder und 1 Milliarde pers\u00f6nliche Profil-Statusmeldungen abrufen k\u00f6nnen. Sie kamen zu diesem Ergebnis, nachdem sie zun\u00e4chst die Telefonnummern von 3,5 Milliarden WhatsApp-Nutzer*innen gesammelt hatten. Meta wusste seit \u00fcber acht Jahren von diesem Leak und gibt haupts\u00e4chlich den Nutzer*innen selbst die Schuld f\u00fcr die Offenlegung von Profilbildern und Profilinformationen.<\/strong><\/p>\n\n\n\n<p>In WhatsApp kannst du sehen, ob jemand ein WhatsApp-Konto hat, sobald du dessen Telefonnummer eingibst. Oft kannst du auch sofort den Namen, das Profilbild und den Status dieser Person sehen. Die <a href=\"https:\/\/github.com\/sbaresearch\/whatsapp-census\/blob\/main\/Hey_there_You_are_using_WhatsApp.pdf\">\u00f6sterreichischen Forscher*innen<\/a> nutzen dieses Feature, um systematisch eine enorme Anzahl von Telefonnummern zu \u00fcberpr\u00fcfen und so 3,5 Milliarden WhatsApp-Nutzer*innen zu erfassen.<\/p>\n\n\n\n<p>Bei mehr als der H\u00e4lfte dieser Konten (57 Prozent, also rund zwei Milliarden) war das Profilbild sichtbar. Bei etwa einer Milliarde Nutzer*innen konnten sie sogar die pers\u00f6nlichen Profil-Statusmeldungen auslesen.<\/p>\n\n\n\n<p>WhatsApp wurde bereits 2017 davor gewarnt, dass dieses System auf diese Weise missbraucht werden k\u00f6nnte. Meta h\u00e4tte also schon viel fr\u00fcher einschr\u00e4nken k\u00f6nnen, wie oft Telefonnummern \u00fcberpr\u00fcft werden d\u00fcrfen \u2013 und damit auch, wie auf Profilbilder und Informationen zugegriffen werden kann.<\/p>\n\n\n\n<p>In einer Antwort auf <a href=\"https:\/\/www.wired.com\/story\/a-simple-whatsapp-security-flaw-exposed-billions-phone-numbers\/\">Wired<\/a>stellt Meta haupts\u00e4chlich die Nutzer*innen an den Pranger: Die erlangten Daten seien \u201egrunds\u00e4tzlich \u00f6ffentlich verf\u00fcgbare Informationen\u201c, sofern Nutzer*innen nicht selbst gew\u00e4hlt haben, ihr Profilbild und ihre Informationen zu verbergen.<\/p>\n\n\n\n<p>WhatsApp geht daher davon aus, dass jede*r Nutzer*in die eigenen Einstellungen selbst anpasst, w\u00e4hrend Nutzer*innen f\u00e4lschlicherweise annehmen, dass WhatsApp sich um ihre Privatsph\u00e4re k\u00fcmmert.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">WhatsApp ist nicht standardm\u00e4\u00dfig auf deine Privatsph\u00e4re ausgelegt<\/h2>\n\n\n\n<p>Metas Reaktion zeigt erneut, dass Privatsph\u00e4re bei WhatsApp vor allem als Marketingbegriff benutzt wird und dass WhatsApp nicht standardm\u00e4\u00dfig auf deine Privatsph\u00e4re ausgelegt ist.<\/p>\n\n\n\n<p>Verschiedene Funktionen in der App \u2013 wie dein Profilbild, deine Profilinformationen, \u201eZuletzt online\u201c und dein Onlinestatus \u2013 sind standardm\u00e4\u00dfig \u00f6ffentlich sichtbar. WhatsApp selbst kann ebenfalls dein Profilfoto, Informationen \u00fcber dich, Gruppennamen sowie die Beschreibungen deiner Communities und Gruppen einsehen, wie in&nbsp;<a href=\"https:\/\/www.whatsapp.com\/legal\/privacy-policy-eea\">der Datenschutzrichtlinie von WhatsApp beschrieben<\/a>.<\/p>\n\n\n\n<p>Au\u00dferdem f\u00fcgt WhatsApp immer mehr Funktionen hinzu, die nicht Ende-zu-Ende-verschl\u00fcsselt sind, wie zum Beispiel Channels. In der&nbsp;<a href=\"https:\/\/www.whatsapp.com\/legal\/channels-privacy-policy-eea\/\">erg\u00e4nzenden Datenschutzrichtlinien f\u00fcr WhatsApp-Channels<\/a>hei\u00dft es, dass WhatsApp buchst\u00e4blich alles \u00fcber dich sammelt und sieht: Welchen Inhalt du anschaust, wie du reagierst, welche Funktionen du nutzt, wie lange und wann du sie nutzt, wonach du suchst \u2013 und alles \u00fcber deine Follower*innen. Au\u00dferdem sammelt WhatsApp s\u00e4mtliche Inhalte, die in Kan\u00e4len geteilt werden, also Texte, Videos, Fotos, Dokumente, Links, GIFs, Sticker, Audioinhalte und Umfragen.<\/p>\n\n\n\n<p>Nachrichten und Anrufe auf WhatsApp sind zwar weiterhin privat und Ende-zu-Ende-verschl\u00fcsselt, allerdings l\u00e4sst sich das nicht \u00fcberpr\u00fcfen, da WhatsApp Closed Source ist.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Signal ist f\u00fcr dich und deine Privatsph\u00e4re gemacht<\/h2>\n\n\n\n<p>Die gute Nachricht ist, dass immer mehr Menschen erkennen, dass WhatsApp nicht f\u00fcr die Privatsph\u00e4re der Nutzer*innen gebaut ist und <a href=\"https:\/\/aboutsignal.com\/de\/blog\/so-wechselst-du-von-whatsapp-zu-signal\/\">zu Signal wechseln<\/a>\u2013 einer App, die die Privatsph\u00e4re und Sicherheit der Nutzer*innen tats\u00e4chlich priorisiert.<\/p>\n\n\n\n<p>Auf Signal sind Profilbilder und Profilinformationen f\u00fcr alle, die dich kontaktieren wollen, standardm\u00e4\u00dfig privat. Alles ist Ende-zu-Ende-verschl\u00fcsselt, und Signal kann nichts von dem sehen, was du teilst. All deine Nachrichten, Anrufe, Profilinformationen, Gruppen und Kontakte sind privat \u2013 so, wie es sein sollte.<\/p>\n\n\n\n<p>Zus\u00e4tzlich kannst du unter Einstellungen &gt; Privatsph\u00e4re &gt; Telefonnummer festlegen, dass dich niemand \u00fcber deine Telefonnummer auf Signal finden kann. Wer deine Nummer in Signal eingibt, sieht dann die Meldung, dass du kein*e Signal-Nutzer*in bist. Au\u00dferdem ist die Anzahl der Versuche, eine Telefonnummer einzugeben, auf Signal begrenzt.<\/p>\n\n\n\n<p>Au\u00dferdem kannst du Signal auch mit einem Benutzernamen verwenden, sodass du deine Telefonnummer nie mit anderen teilen musst, um in Kontakt zu treten.<\/p>\n\n\n\n<p>Zu guter Letzt ist Signal \u2013 anders als WhatsApp \u2013 Open Source. Das bedeutet, dass du ihnen nicht einfach glauben musst, sondern alles selbst \u00fcberpr\u00fcfen kannst.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sei vorsichtig mit WhatsApp und wechsle zu Signal f\u00fcr mehr Privatsph\u00e4re<\/h2>\n\n\n\n<p>Nutzer*innen, die WhatsApp trotz aller Datenschutzbedenken rund um Meta weiterhin verwenden m\u00f6chten, sollten ihre Privatsph\u00e4re-Einstellungen so schnell wie m\u00f6glich aktualisieren, um zu verhindern, dass ihr Profilbild und ihre Profilinformationen von Kriminellen missbraucht werden \u2013 etwa f\u00fcr Phishing oder Betrugsversuche.<\/p>\n\n\n\n<p>Der einfachste Schritt ist nat\u00fcrlich, einfach zu Signal zu wechseln. Denn <a href=\"https:\/\/aboutsignal.com\/de\/blog\/wie-verdient-signal-geld-das-umsatzmodell-von-signal\/\">Signal ist nicht darauf ausgerichtet, Profit zu machen<\/a>\u2013 so k\u00f6nnen sich die Entwickler*innen vollst\u00e4ndig auf <a href=\"https:\/\/aboutsignal.com\/de\/signal-app-vergleich\/\">Privatsph\u00e4re und Sicherheit konzentrieren k\u00f6nnen<\/a>. Andere Apps wie WhatsApp m\u00fcssen verschiedene Methoden und Tricks einsetzen, um letztlich Geld mit deinen privaten Gespr\u00e4chen zu verdienen \u2013 was oft zu <a href=\"https:\/\/aboutsignal.com\/de\/signal-app-vergleich\/\">weniger Privatsph\u00e4re und schw\u00e4cherer Sicherheit f\u00fchrt,<\/a>wie dieser gro\u00dfe WhatsApp-Leak einmal mehr gezeigt hat.<\/p>\n\n\n\n<p>Du hast Signal noch nicht? <a href=\"https:\/\/signal.org\/install\">Lade Signal kostenlos \u00fcber deinen App-Store herunter<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Wechsle zu Signal f\u00fcr echte Privatsph\u00e4re.<\/p>","protected":false},"author":1,"featured_media":55116,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-55112","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>WhatsApp leak: Two billion profile pictures and personal information accessible to everyone - AboutSignal.com<\/title>\n<meta name=\"description\" content=\"Users who still use WhatsApp should update their privacy settings. 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