Cybercriminals rely on operations security (opsec) to stay ahead of law enforcement and security researchers. Opsec is a term from the military world, used to protect privacy and anonymity. The irony is that criminals rely on many of the same tools that defenders and internet users on the good side adopt to stay secure online. Failing to keep the personal life and criminal activities separate is a common opsec mistake, expert says. Lapses in opsec give defenders the clue they need they need to stop the attack.”]
Source: https://www.csoonline.com/article/3104864/the-advanced-security-techniques-of-criminal-hackers.html