Super common spear phishing in modern times, back a few decades-ish chinese plants would attend military convferences, or would monitor those from the US who we

Super common spear phishing in modern times, back a few decades-ish chinese plants would attend military convferences, or would monitor those from the US who went to said conferences, then would "follow-up" with an email talking about how they met and talked about "some program or weapon that person was in the know of" on a superficial level and stroke their ego a bit... then phish them with malware based on that supposed meeting and ego stroking...