Possible BGP hijack

Beginning at 2022-09-05 20:39:04 UTC, we detected a possible BGP hijack.

Prefix 190.111.158.0/24, is normally announced by AS4 ISI-AS, US.

But beginning at 2022-09-05 20:39:04, the same prefix (190.111.158.0/24) was also announced by ASN 270430.

This was detected by 30 BGPMon peers.

Expected
Start time: 2022-09-05 20:39:04 UTC
Expected prefix: 190.111.158.0/24
Expected ASN: 4 (ISI-AS, US)
Event Details
Detected advertisement: 190.111.158.0/24
Detected Origin ASN 270430 (LOGNET TELECOM LTDA, BR)
Detected AS Path 28186 11751 270430
Detected by number of BGPMon peers: 30

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