If you have spent any time searching through (the UK’s leading aftermarket workshop software), you have likely stumbled across a cryptic string of codes: 341, PTPT, ISO Top .
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During one midnight update cycle, the TOP alerted Autodata's operations team to an anomaly: a cluster of 341s in a remote region showed coordinated heartbeat delays and repeated partial handshake attempts. The logs suggested someone was probing the devices with timing patterns similar to PTPT but offset — an attempt to brute-force the handshake. If you have spent any time searching through