Possible BGP hijack

Beginning at 2023-11-24 14:32:02 UTC, we detected a possible BGP hijack.

Prefix 131.72.116.0/24, is normally announced by AS270982 SENA E SANTOS LTDA-ME, BR.

But beginning at 2023-11-24 14:32:02, the same prefix (131.72.116.0/24) was also announced by ASN 265171.

This was detected by 4 BGPMon peers.

Expected
Start time: 2023-11-24 14:32:02 UTC
Expected prefix: 131.72.116.0/24
Expected ASN: 270982 (SENA E SANTOS LTDA-ME, BR)
Event Details
Detected advertisement: 131.72.116.0/24
Detected Origin ASN 265171 (SITELBRA LTDA, BR)
Detected AS Path 36692 4637 6762 26615 26615 265171
Detected by number of BGPMon peers: 4

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