A notable OpSec (https://opsec101.org/) failure: in 2009, in an compromised chat room, he mentioned the birth of his daughter.

On that day, one girl with that name and weight was born in the country.

That's how the hacker got a face…

Source: t.me/officer_cia

Kerbs Article:
krebsonsecurity.com/2022/11/top-zeus-botnet-suspect-tank-arrested-in-geneva

Article about representative sample technique here:
[spoiler]officercia.mirror.xyz/WeAilwJ9V4GIVUkYa7WwBwV2II9dYwpdPTp3fNsPFjo[/spoiler]

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P.S. wasn't sure where to post this thread so posted it here.