Possible BGP hijack

Beginning at 2019-05-20 13:23:58, we detected a possible BGP hijack.

Prefix 122.136.0.0/13, Normally announced by AS4837 CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN

Starting at 2019-05-20 13:23:58, a more specific route (122.142.77.0/24) was announced by ASN 51678.

This was detected by 3 BGPMon peers.

Expected
Start time: 2019-05-20 13:23:58 UTC
Expected prefix: 122.136.0.0/13
Expected ASN: 4837 (CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN)
Event Details
Detected advertisement: 122.142.77.0/24
Detected Origin ASN 51678 (IBERMATICA, ES)
Detected AS Path 8399 57877 57877 12715 51678 51678 51678
Detected by number of BGPMon peers: 3

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