Epic Cases of Costly OPSEC Failures

In most dark web vendor busts, the vendors are identified not due to complex LE investigations, but because they fail in basic OPSEC.
In a typical vendor bust, the investigators make undercover purchases, conduct surveillance at the post office the drugs were mailed from, and identify the sender who in most cases turns out to be the vendor. The investigators almost always track the bitcoin to the vendor's account at a crypto exchange. I some cases, the vendors are so …

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