A ransomware development kit that doesn’t require any coding skills is being sold on underground forums. All a wannabe cyber criminal needs to build their own file-locking malware is an Android phone. Downloadable from hacking discussion boards for free, the Trojan Development Kit (TDK) apps comes with an easy to use interface that allows criminals to quickly create their own ransomware, say researchers who recently spotted the appearance of this particular DIY ransomware kit.