Zero day exploit for new fibre patch pre installed on all new routers. If you upgrade to latest firmware on any fibre optic line it hold hard ip adress identification method. Meaning it will secretly track everything you do through backdoor router zero day explot. Cease any private activity for the next month until more is released on the subject. You was warned here first xd.
Edit: In regards to latest christmas patch. They swept it in through the backdoor whilst everyone was celebrating. Openreach is the company who implimented this backdoor. They are going through ofcom reveiw in the upcoming months expect to hear them get fines from ofcom in news soon. However until then you got to be aware.