Possible BGP hijack

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

Prefix 66.185.176.0/20, is normally announced by AS18730 Cybersource Corp..

But beginning at 2018-10-17 09:47:23, the same prefix (66.185.176.0/20) was also announced by ASN 2856.

This was detected by 50 BGPMon peers.

Expected
Start time: 2018-10-17 09:47:23 UTC
Expected prefix: 66.185.176.0/20
Expected ASN: 18730 (Cybersource Corp.)
Event Details
Detected advertisement: 66.185.176.0/20
Detected Origin ASN 2856 (British Telecommunications PLC)
Detected AS Path 1850 6677 2856
Detected by number of BGPMon peers: 50

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