Possible BGP hijack

Beginning at 2017-09-12 19:31:38 UTC, we detected a possible BGP hijack.

Prefix 177.154.16.0/22, is normally announced by AS5 Symbolics, Inc..

But beginning at 2017-09-12 19:31:38, the same prefix (177.154.16.0/22) was also announced by ASN 3.

This was detected by 91 BGPMon peers.

Expected
Start time: 2017-09-12 19:31:38 UTC
Expected prefix: 177.154.16.0/22
Expected ASN: 5 (Symbolics, Inc.)
Event Details
Detected advertisement: 177.154.16.0/22
Detected Origin ASN 3 (Massachusetts Institute of Technology)
Detected AS Path 395089 18451 6939 266194 262942 3
Detected by number of BGPMon peers: 91

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