https://www.bleepingcomputer.com/news/security/blacktech-apt-steals-d-link-cert-for-cyber-espionage-campaign/

A lesser-known cyber-espionage group known as BlackTech has been caught earlier this month using a stolen D-Link certificate to sign malware deployed in a recent campaign.

"The exact same certificate had been used to sign [official] D-Link software; therefore, the certificate was likely stolen," says Anton Cherepanov, a security researcher for Slovak antivirus company ESET, and the one who discovered the stolen cert.