Hi Eyal;
OK .. just did a complete scan on my development PC and PB 12.6 does not expose any ports. Also checked my home office PB 12.6 machines and there are no open ports or entries in the local firewall to even allow these ports.
FWIW: I think that either your IT Security guys are OTL - OR - you have some other malware on your PC spoofing PB.
Regards ... Chris