Possible BGP hijack

Beginning at 2023-12-26 20:14:09 UTC, we detected a possible BGP hijack.

Prefix 177.8.72.0/21, is normally announced by AS262833 Porto Mixcom Comunicacao e Informatica Ltda, BR.

But beginning at 2023-12-26 20:14:09, the same prefix (177.8.72.0/21) was also announced by ASN 262191.

This was detected by 14 BGPMon peers.

Expected
Start time: 2023-12-26 20:14:09 UTC
Expected prefix: 177.8.72.0/21
Expected ASN: 262833 (Porto Mixcom Comunicacao e Informatica Ltda, BR)
Event Details
Detected advertisement: 177.8.72.0/21
Detected Origin ASN 262191 (COLUMBUS NETWORKS COLOMBIA, CO)
Detected AS Path 15557 6830 23520 23520 23520 23520 262191
Detected by number of BGPMon peers: 14

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