For those who are not able to get what am I referring to, this is the article
[FBI seizes Bitcoin wallet holding ransom extorted from Colonial Pipeline. AFP and FBI ran a successful messaging app sting.](https://thecyberwire.com/newsletters/daily-briefing/10/109)
In that article it is written:
>The seizure warrant gives, in suitably redacted form, the FBI’s tracking of the wallets through which the funds passed. The money was seized when it reached a wallet for which the Bureau held the key, which suggests that the Feds were leaning forward in the foxhole on this one.
As someone who considering bitcoin for “anonymity”, can any one give me any leads or some kind of explanation on how they tracked the wallet, found the keys etc because it certainly seemed a new technological development to me!