An ISAC supplied recent threat intelligence information about pictures used on social media that provide...

The actions described fall under Operational Security (OPSEC), which is the practice of identifying critical information, analyzing potential adversary intelligence collection, and implementing measures to protect sensitive details from disclosure. In this case, the ISAC report highlights how adversaries may use photos shared on social media as reconnaissance, revealing details about technology or configurations inside secure facilities.

By disabling cameras and location services on corporate devices and blocking access to social media from corporate and guest networks, the CISO is reducing the chance of inadvertent information disclosure. This prevents employees from unintentionally leaking images or metadata that adversaries could exploit.

Adversary emulation (A) involves simulating threat actors’ tactics in controlled exercises, which is not what is occurring here. Open-source intelligence (C) is the method adversaries use to gather data, not the defensive practice the CISO is implementing. Social engineering (D) describes manipulative attacks against humans, but this control is preventive, not reactive.

Thus, these measures are clear examples of Operational Security to limit information exposure.