Possible BGP hijack

Beginning at 2018-01-13 00:53:40 UTC, we detected a possible BGP hijack.

Prefix 131.108.80.0/22, is normally announced by AS10 CSNET Coordination and Information Center (CSNET-CIC).

But beginning at 2018-01-13 00:53:40, the same prefix (131.108.80.0/22) was also announced by ASN 22927.

This was detected by 12 BGPMon peers.

Expected
Start time: 2018-01-13 00:53:40 UTC
Expected prefix: 131.108.80.0/22
Expected ASN: 10 (CSNET Coordination and Information Center (CSNET-CIC))
Event Details
Detected advertisement: 131.108.80.0/22
Detected Origin ASN 22927 (Telefonica de Argentina)
Detected AS Path 29834 3549 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 61456 22927
Detected by number of BGPMon peers: 12

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