Possible BGP hijack

Beginning at 2020-05-13 22:03:54 UTC, we detected a possible BGP hijack.

Prefix 2804:536c::/32, is normally announced by AS268583 F DOS SANTOS BATISTA EIRELI ME, BR.

But beginning at 2020-05-13 22:03:54, the same prefix (2804:536c::/32) was also announced by ASN 20940.

This was detected by 2 BGPMon peers.

Expected
Start time: 2020-05-13 22:03:54 UTC
Expected prefix: 2804:536c::/32
Expected ASN: 268583 (F DOS SANTOS BATISTA EIRELI ME, BR)
Event Details
Detected advertisement: 2804:536c::/32
Detected Origin ASN 20940 (AKAMAI-ASN1, EU)
Detected AS Path 11170 36213 6939 18881 20940 20940
Detected by number of BGPMon peers: 2

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