As it became known by SecurityLab, on 13 May, 2004, approximately 800Mb of the operating system CISCO IOS 12.3, 12..3t, which is used in the majority of the net devices of company CISCO.
Securitylabs also provides 100 first lines of the initial code of file ipv6_.tcp.c and ipv6_.discovery_.test.c.
According to the information available, the leakage of the fragments of the initial code occurred because of the breaking of the corporate Cisco network. Representatives Cisco Systems so far have not commented on the incident.
Sample of the original code: