![]() ![]() However, Check Point research team has managed to bypass the mechanism’s restrictions by uploading a malicious HTML document with a legitimate preview of an image in order to fool a victim to click on the document in order to takeover his account. WhatsApp upload file mechanism supports several document types such as Office Documents, PDF, Audio files, Video and images.Įach of the supported types can be uploaded and sent to WhatsApp clients as an attachment. Once we disclosed the vulnerability to WhatsApp, it was immediately fixed by the company. In September 2015, we revealed another vulnerability in WhatsApp Web, which allowed hackers to send users a seemingly innocent vCard containing malicious code. It is a cloud-based mobile and Web messaging app, stating that their focus on security and speed. Telegram has over 100 million monthly active users, delivering over 15 billion messages daily. The company’s web version is available on all browsers and WhatsApp supported platforms, including Android, iPhone (iOS), Windows Phone 8.x, BlackBerry, BB10 and Nokia smartphones. WhatsApp has over 1 billion users worldwide, making it the most prevalent instant messaging service existing today.
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