Android users on Samsung mobile devices could be vulnerable to a new type of security hack. The security flaw was discovered by Ryan Welton from NowSecure. He detailed his findings at the Blackhat Security Summit in London. The hackable exploit arises from the pre-installed SwiftKey keyboard. As Swiftkey searches for updates to its language packs over unencrypted lines, via plain text, it is susceptible to malicious security apps from any spoofed proxy server. Using this as a keyhole, Welton could scale up the attack to basically take over a vulnerable mobile device while the user remains unaware. The bug affects over 600 million Samsung users, including those using the Galaxy S6.