Possible BGP hijack

Beginning at 2020-09-23 23:56:54 UTC, we detected a possible BGP hijack.

Prefix 181.191.152.0/24, is normally announced by AS267488 ANDRE LUIZ SILVA DOS SANTOS INFORMATICA - ME, BR.

But beginning at 2020-09-23 23:56:54, the same prefix (181.191.152.0/24) was also announced by ASN 136933.

This was detected by 6 BGPMon peers.

Expected
Start time: 2020-09-23 23:56:54 UTC
Expected prefix: 181.191.152.0/24
Expected ASN: 267488 (ANDRE LUIZ SILVA DOS SANTOS INFORMATICA - ME, BR)
Event Details
Detected advertisement: 181.191.152.0/24
Detected Origin ASN 136933 (GIGABITBANK-AS-AP Gigabitbank Global, HK)
Detected AS Path 138540 9299 3491 58453 136933 136933
Detected by number of BGPMon peers: 6

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