US security firm Palo Alto Networks have discovered that millions of Android smartphones commercialized by the Chinese smartphone maker Coolpad Group Ltd. may contain a backdoor, dubbed CoolReaper, that allows the tracking of the users. Backdoor could be exploited to push unwanted pop-up advertisements and install unauthorized apps onto users mobile device. Coolpad customers have reported suspicious activities related to the presence of the backdoor, but complaints were ignored by the company. The impact could be really serious, more than 10 million users worldwide are.”]
Source: https://securityaffairs.co/wordpress/31227/mobile-2/coolreaper-coolpad-backdoor.html