Possible BGP hijack

Beginning at 2023-11-11 14:10:15, we detected a possible BGP hijack.

Prefix 12.0.0.0/9, Normally announced by AS7018 ATT-INTERNET4, US

Starting at 2023-11-11 14:10:15, a more specific route (12.0.0.0/24) was announced by ASN 52935.

This was detected by 14 BGPMon peers.

Expected
Start time: 2023-11-11 14:10:15 UTC
Expected prefix: 12.0.0.0/9
Expected ASN: 7018 (ATT-INTERNET4, US)
Event Details
Detected advertisement: 12.0.0.0/24
Detected Origin ASN 52935 (Infobarra Solucoes em Informatica Ltda, BR)
Detected AS Path 15557 6762 12956 10429 52573 52573 52573 52935
Detected by number of BGPMon peers: 14

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