Possible BGP hijack

Beginning at 2018-10-17 09:47:23 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS18730 CYBERSOURCE-SC4 - Cybersource Corp., US.

But beginning at 2018-10-17 09:47:23, the same prefix ( was also announced by ASN 2856.

This was detected by 50 BGPMon peers.

Start time: 2018-10-17 09:47:23 UTC
Expected prefix:
Expected ASN: 18730 (CYBERSOURCE-SC4 - Cybersource Corp., US)
Event Details
Detected advertisement:
Detected Origin ASN 2856 (BT-UK-AS BTnet UK Regional network, GB)
Detected AS Path 1850 6677 2856
Detected by number of BGPMon peers: 50

Watch the replay of this event