Possible BGP hijack

Beginning at 2023-10-11 14:39:35 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS52660 e.serv informatica e tecnologia ltda., BR.

But beginning at 2023-10-11 14:39:35, the same prefix ( was also announced by ASN 4270.

This was detected by 4 BGPMon peers.

Start time: 2023-10-11 14:39:35 UTC
Expected prefix:
Expected ASN: 52660 (e.serv informatica e tecnologia ltda., BR)
Event Details
Detected advertisement:
Detected Origin ASN 4270 (Red de Interconexion Universitaria, AR)
Detected AS Path 15296 6509 27750 3597 4270
Detected by number of BGPMon peers: 4

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