Possible BGP hijack

Beginning at 2019-06-20 07:08:36 UTC, we detected a possible BGP hijack.

Prefix 2a00:ad87:4600::/48, is normally announced by AS9890 ATOSINFOTECH-SG-AP ATOS Information Technology (Singapore) Pte Ltd, SG.

But beginning at 2019-06-20 07:08:36, the same prefix (2a00:ad87:4600::/48) was also announced by ASN 264175.

This was detected by 3 BGPMon peers.

Expected
Start time: 2019-06-20 07:08:36 UTC
Expected prefix: 2a00:ad87:4600::/48
Expected ASN: 9890 (ATOSINFOTECH-SG-AP ATOS Information Technology (Singapore) Pte Ltd, SG)
Event Details
Detected advertisement: 2a00:ad87:4600::/48
Detected Origin ASN 264175 (Station Telecomunicacoes ltda, BR)
Detected AS Path 27553 12129 3491 58453 7738 8167 14840 28642 28642 28642 28642 264175
Detected by number of BGPMon peers: 3

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