Possible BGP hijack

Beginning at 2022-07-25 16:10:24 UTC, we detected a possible BGP hijack.

Prefix 14.138.248.0/21, is normally announced by AS10036 CNM-AS-KR DLIVE, KR.

But beginning at 2022-07-25 16:10:24, the same prefix (14.138.248.0/21) was also announced by ASN 263637.

This was detected by 2 BGPMon peers.

Expected
Start time: 2022-07-25 16:10:24 UTC
Expected prefix: 14.138.248.0/21
Expected ASN: 10036 (CNM-AS-KR DLIVE, KR)
Event Details
Detected advertisement: 14.138.248.0/21
Detected Origin ASN 263637 (DIGITAL TECNOLOGIA & TELECOMUNICACAO LTDA, BR)
Detected AS Path 263287 263396 263321 267613 52320 263637
Detected by number of BGPMon peers: 2

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