Possible BGP hijack

Beginning at 2020-05-01 02:48:18 UTC, we detected a possible BGP hijack.

Prefix 200.19.50.0/24, is normally announced by AS28596 B3 S.A. Brasil, Bolsa, Balcao, BR.

But beginning at 2020-05-01 02:48:18, the same prefix (200.19.50.0/24) was also announced by ASN 3356.

This was detected by 134 BGPMon peers.

Expected
Start time: 2020-05-01 02:48:18 UTC
Expected prefix: 200.19.50.0/24
Expected ASN: 28596 (B3 S.A. Brasil, Bolsa, Balcao, BR)
Event Details
Detected advertisement: 200.19.50.0/24
Detected Origin ASN 3356 (LEVEL3, US)
Detected AS Path 25605 3257 3356
Detected by number of BGPMon peers: 134

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