Possible BGP hijack

Beginning at 2020-11-02 19:12:25 UTC, we detected a possible BGP hijack.

Prefix 143.255.236.0/24, is normally announced by AS265163 S R DA SILVA OLIVEIRA, BR.

But beginning at 2020-11-02 19:12:25, the same prefix (143.255.236.0/24) was also announced by ASN 52320.

This was detected by 10 BGPMon peers.

Expected
Start time: 2020-11-02 19:12:25 UTC
Expected prefix: 143.255.236.0/24
Expected ASN: 265163 (S R DA SILVA OLIVEIRA, BR)
Event Details
Detected advertisement: 143.255.236.0/24
Detected Origin ASN 52320 (GlobeNet Cabos Submarinos Colombia, S.A.S., CO)
Detected AS Path 394255 6327 1299 52320
Detected by number of BGPMon peers: 10

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