Source site:
Source: https://krebsonsecurity.com/2021/09/fudco-spam-empire-tied-to-pakistani-software-firm/
Source: https://krebsonsecurity.com/2021/09/15-year-old-malware-proxy-network-vip72-goes-dark/
Source: https://krebsonsecurity.com/2023/04/3cx-breach-was-a-double-supply-chain-compromise/