Team Fortress 2 players use an HWID spoofer when the ban is on the computer. The practical sign is a new Steam account on the same PC hitting the same hardware block.

The game reads device identifiers at launch. A hardware ban is a match against those values, so the penalty stays with the machine.

The TF2 spoofer presents a different hardware profile so the stored HWID is not the one the client sends.

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