Possible BGP hijack

Beginning at 2023-05-29 21:57:58 UTC, we detected a possible BGP hijack.

Prefix 187.17.216.0/24, is normally announced by AS28266 Vante Provedor de Internet Ltda, BR.

But beginning at 2023-05-29 21:57:58, the same prefix (187.17.216.0/24) was also announced by ASN 267458.

This was detected by 49 BGPMon peers.

Expected
Start time: 2023-05-29 21:57:58 UTC
Expected prefix: 187.17.216.0/24
Expected ASN: 28266 (Vante Provedor de Internet Ltda, BR)
Event Details
Detected advertisement: 187.17.216.0/24
Detected Origin ASN 267458 (ITMINDS CONSULTORIA EM TECNOLOGIA DA INFORMACAO, BR)
Detected AS Path 28300 14840 6762 53013 267458
Detected by number of BGPMon peers: 49

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