Possible BGP hijack

Beginning at 2021-11-30 11:45:18 UTC, we detected a possible BGP hijack.

Prefix 81.2.190.0/24, is normally announced by AS205520 XTB, PL.

But beginning at 2021-11-30 11:45:18, the same prefix (81.2.190.0/24) was also announced by ASN 55002.

This was detected by 2 BGPMon peers.

Expected
Start time: 2021-11-30 11:45:18 UTC
Expected prefix: 81.2.190.0/24
Expected ASN: 205520 (XTB, PL)
Event Details
Detected advertisement: 81.2.190.0/24
Detected Origin ASN 55002 (DEFENSE-NET, US)
Detected AS Path 28186 7738 1299 55002
Detected by number of BGPMon peers: 2

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