The Advanced Persistent Threat (APT) group BlackTech has stolen code-signing certificates from D-Link and Changing Information Technology Inc., and is using them to cryptographically sign a remotely controlled backdoor known as Plead and an associated password stealer. With the stolen certificates, individuals who receive the malware as email attachments are likely to be fooled into thinking the files are genuine and have been developed by trusted companies. If the executables are run, the malware will be installed giving the attackers full control of an infected device and the ability to steal...