Possible BGP hijack

Beginning at 2021-02-27 02:06:54 UTC, we detected a possible BGP hijack.

Prefix 2001:3c8:2707::/48, is normally announced by AS4762 MAHIDOL-BORDER-AS Mahidol University, Thailand, TH.

But beginning at 2021-02-27 02:06:54, the same prefix (2001:3c8:2707::/48) was also announced by ASN 269684.

This was detected by 3 BGPMon peers.

Expected
Start time: 2021-02-27 02:06:54 UTC
Expected prefix: 2001:3c8:2707::/48
Expected ASN: 4762 (MAHIDOL-BORDER-AS Mahidol University, Thailand, TH)
Event Details
Detected advertisement: 2001:3c8:2707::/48
Detected Origin ASN 269684 (LANFIBRA TELECOMUNICACOES - EIRELI, BR)
Detected AS Path 52873 266539 269684
Detected by number of BGPMon peers: 3

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