Possible BGP hijack

Beginning at 2023-08-29 00:45:55 UTC, we detected a possible BGP hijack.

Prefix 2605:d4c0::/32, is normally announced by AS21835 SCARSDALE-SECURITY-SYSTEMS, US.

But beginning at 2023-08-29 00:45:55, the same prefix (2605:d4c0::/32) was also announced by ASN 266970.

This was detected by 3 BGPMon peers.

Expected
Start time: 2023-08-29 00:45:55 UTC
Expected prefix: 2605:d4c0::/32
Expected ASN: 21835 (SCARSDALE-SECURITY-SYSTEMS, US)
Event Details
Detected advertisement: 2605:d4c0::/32
Detected Origin ASN 266970 ()
Detected AS Path 204092 30781 3356 4230 61678 266970
Detected by number of BGPMon peers: 3

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