Possible BGP hijack

Beginning at 2020-05-26 10:18:26, we detected a possible BGP hijack.

Prefix 27.192.0.0/11, Normally announced by AS4837 CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN

Starting at 2020-05-26 10:18:26, a more specific route (27.223.5.0/24) was announced by ASN 3462.

This was detected by 3 BGPMon peers.

Expected
Start time: 2020-05-26 10:18:26 UTC
Expected prefix: 27.192.0.0/11
Expected ASN: 4837 (CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN)
Event Details
Detected advertisement: 27.223.5.0/24
Detected Origin ASN 3462 (HINET Data Communication Business Group, TW)
Detected AS Path 133812 137363 58552 9505 3462
Detected by number of BGPMon peers: 3

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