Which aspect of counterintelligence focuses on capturing enemy intelligence operations?

The correct choice highlights that offensive activities in counterintelligence are aimed specifically at thwarting and undermining enemy intelligence operations. This involves proactive measures such as infiltration, deception, or direct actions to capture or disrupt the operations of adversaries. These activities are critical in gathering intelligence about potential threats and understanding the capabilities and intentions of rivals. By actively engaging in offensive counterintelligence, an organization can protect its own assets and mitigate risks from enemy information-gathering efforts.

Other choices, while important components of counterintelligence, do not specifically target the capture of enemy intelligence. Vigilance pertains to the need for continuous alertness and awareness of potential intelligence threats. Defensive strategies are designed to protect sensitive information and prevent espionage but do not inherently involve offensive actions to counter enemy operations. Recruitment efforts refer to the process of identifying and engaging potential sources of intelligence, which is fundamental to building a network but is separate from directly capturing enemy operations. Thus, offensive activities stand out as the aspect focused on actively engaging and disrupting enemy intelligence efforts.