Possible BGP hijack

Beginning at 2020-03-20 14:07:16, we detected a possible BGP hijack.

Prefix 72.37.128.0/17, Normally announced by AS3257 GTT-BACKBONE GTT, DE

Starting at 2020-03-20 14:07:16, a more specific route (72.37.253.0/24) was announced by ASN 28605.

This was detected by 5 BGPMon peers.

Expected
Start time: 2020-03-20 14:07:16 UTC
Expected prefix: 72.37.128.0/17
Expected ASN: 3257 (GTT-BACKBONE GTT, DE)
Event Details
Detected advertisement: 72.37.253.0/24
Detected Origin ASN 28605 (Defferrari Informática Ltda., BR)
Detected AS Path 53137 28605
Detected by number of BGPMon peers: 5

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