Possible BGP hijack

Beginning at 2019-08-23 13:44:03, we detected a possible BGP hijack.

Prefix 172.0.0.0/12, Normally announced by AS7018 ATT-INTERNET4 - AT&T Services, Inc., US

Starting at 2019-08-23 13:44:03, a more specific route (172.0.0.0/23) was announced by ASN 8953.

This was detected by 151 BGPMon peers.

Expected
Start time: 2019-08-23 13:44:03 UTC
Expected prefix: 172.0.0.0/12
Expected ASN: 7018 (ATT-INTERNET4 - AT&T Services, Inc., US)
Event Details
Detected advertisement: 172.0.0.0/23
Detected Origin ASN 8953 (ASN-ORANGE-ROMANIA, RO)
Detected AS Path 199181 6762 8953
Detected by number of BGPMon peers: 151

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