Possible BGP hijack

Beginning at 2023-01-01 09:09:37 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS28209 Under Servicos de Internet Ltda, BR.

But beginning at 2023-01-01 09:09:37, the same prefix ( was also announced by ASN 15399.

This was detected by 4 BGPMon peers.

Start time: 2023-01-01 09:09:37 UTC
Expected prefix:
Expected ASN: 28209 (Under Servicos de Internet Ltda, BR)
Event Details
Detected advertisement:
Detected Origin ASN 15399 (WANANCHI-, KE)
Detected AS Path 49673 12389 3491 58453 15399
Detected by number of BGPMon peers: 4

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