Possible BGP hijack

Beginning at 2021-03-01 14:58:51 UTC, we detected a possible BGP hijack.

Prefix 2a0a:3140:1610::/44, is normally announced by AS15532 Network Security, CH.

But beginning at 2021-03-01 14:58:51, the same prefix (2a0a:3140:1610::/44) was also announced by ASN 269684.

This was detected by 2 BGPMon peers.

Expected
Start time: 2021-03-01 14:58:51 UTC
Expected prefix: 2a0a:3140:1610::/44
Expected ASN: 15532 (Network Security, CH)
Event Details
Detected advertisement: 2a0a:3140:1610::/44
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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