After some military contractors in some countries got targeted and hurt, most European defence companies started asking their employees they don't advertise who

After some military contractors in some countries got targeted and hurt, most European defence companies started asking their employees they don't advertise who you work for and where, especially in the Internet, and especially on social media. You're advised not to wear company swag and all company-provided transport (buses) are required not to say or write the name of the company when picking up employees. You're also advised to avoid giving a precise Linked In profile. Even your role makes you a phishing (or worse) target. You'd get frequent opsec training refreshes explaining all the new tricks and how such and such got roped in from their SM presence.