Possible BGP hijack

Beginning at 2021-02-27 01:39:15, we detected a possible BGP hijack.

Prefix 2001:a17::/32, Normally announced by AS204679 OSE, PL

Starting at 2021-02-27 01:39:15, a more specific route (2001:a17:fffa::/48) was announced by ASN 269684.

This was detected by 2 BGPMon peers.

Expected
Start time: 2021-02-27 01:39:15 UTC
Expected prefix: 2001:a17::/32
Expected ASN: 204679 (OSE, PL)
Event Details
Detected advertisement: 2001:a17:fffa::/48
Detected Origin ASN 269684 (LANFIBRA TELECOMUNICACOES - EIRELI, BR)
Detected AS Path 53131 266539 269684
Detected by number of BGPMon peers: 2

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