Possible BGP hijack

Beginning at 2020-05-13 10:19:46 UTC, we detected a possible BGP hijack.

Prefix 193.105.247.0/24, is normally announced by AS50965 LEONHARD-KURZ-STIFTUNG, GB.

But beginning at 2020-05-13 10:19:46, the same prefix (193.105.247.0/24) was also announced by ASN 3257.

This was detected by 52 BGPMon peers.

Expected
Start time: 2020-05-13 10:19:46 UTC
Expected prefix: 193.105.247.0/24
Expected ASN: 50965 (LEONHARD-KURZ-STIFTUNG, GB)
Event Details
Detected advertisement: 193.105.247.0/24
Detected Origin ASN 3257 (GTT-BACKBONE GTT, DE)
Detected AS Path 36225 2914 3257
Detected by number of BGPMon peers: 52

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