Possible BGP hijack

Beginning at 2023-07-29 19:11:51 UTC, we detected a possible BGP hijack.

Prefix 170.78.240.0/22, is normally announced by AS264128 FUSION TELECOMUNICACOES - EIRELI, BR.

But beginning at 2023-07-29 19:11:51, the same prefix (170.78.240.0/22) was also announced by ASN 60503.

This was detected by 4 BGPMon peers.

Expected
Start time: 2023-07-29 19:11:51 UTC
Expected prefix: 170.78.240.0/22
Expected ASN: 264128 (FUSION TELECOMUNICACOES - EIRELI, BR)
Event Details
Detected advertisement: 170.78.240.0/22
Detected Origin ASN 60503 (FNXTEC, BR)
Detected AS Path 20205 6939 60503 60503
Detected by number of BGPMon peers: 4

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