Possible BGP hijack

Beginning at 2023-08-29 00:42:41 UTC, we detected a possible BGP hijack.

Prefix 2804:427c:8000::/33, is normally announced by AS267503 RCM TELECOM E INFORMATICA LTDA - ME, BR.

But beginning at 2023-08-29 00:42:41, the same prefix (2804:427c:8000::/33) was also announced by ASN 266970.

This was detected by 2 BGPMon peers.

Expected
Start time: 2023-08-29 00:42:41 UTC
Expected prefix: 2804:427c:8000::/33
Expected ASN: 267503 (RCM TELECOM E INFORMATICA LTDA - ME, BR)
Event Details
Detected advertisement: 2804:427c:8000::/33
Detected Origin ASN 266970 ()
Detected AS Path 204092 30781 3356 4230 61678 266970
Detected by number of BGPMon peers: 2

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