Identify a tactic used by adversaries to gather intelligence.

Phishing campaigns aimed at personnel information are a prevalent tactic employed by adversaries to gather intelligence because they exploit human psychology and trust. In these campaigns, adversaries craft deceptive emails that appear to come from legitimate sources, prompting individuals to reveal sensitive information such as usernames, passwords, or other private data. This technique is particularly effective as it targets the weakest link in security—human behavior—rather than relying solely on technical vulnerabilities.

By successfully executing a phishing campaign, adversaries can gain unauthorized access to critical systems and databases, ultimately gathering intelligence that can be used for a range of malicious purposes, including espionage, identity theft, or planning attacks. The information obtained can significantly enhance an adversary's ability to strategize and execute further operations against their targets, making this tactic highly effective in the realm of intelligence gathering.