Possible BGP hijack

Beginning at 2023-05-12 20:01:51 UTC, we detected a possible BGP hijack.

Prefix 103.104.24.0/24, is normally announced by AS135929 COGNITA-AS-VN International Education Corporation, VN.

But beginning at 2023-05-12 20:01:51, the same prefix (103.104.24.0/24) was also announced by ASN 271609.

This was detected by 2 BGPMon peers.

Expected
Start time: 2023-05-12 20:01:51 UTC
Expected prefix: 103.104.24.0/24
Expected ASN: 135929 (COGNITA-AS-VN International Education Corporation, VN)
Event Details
Detected advertisement: 103.104.24.0/24
Detected Origin ASN 271609 ()
Detected AS Path 28300 271609 271609
Detected by number of BGPMon peers: 2

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