Abuse Message [AbuseID:7E7382:20]: AbuseNormal: Unwelcome network traffic from 135.181.77.57

 This is an automated message from Columbia University IT Security. You are
 receiving it because you are listed as the abuse contact in WHOIS for the machine
 referred to below. This machine either attempted to gain unauthorized
 access to one or more machines, or was scanning the network at Columbia
 University.
 
 It is possible that this alert is the result of a reflection attack against your network with a spoofed origin matching Columbia University’s network.
 
 Details are provided below. Please take all necessary
 steps to mitigate such attacks, or ignore this notice if this traffic is spoofed.
 
 If you have received this message in error, or if this incident
 reported is inappropriate, please contact security@columbia.edu
 so that we can update our procedures. Please include the entire
 body of this message.
 
 Thank You.
 
 Columbia University IT Security
 security@columbia.edu
 
 Name: static.57.77.181.135.clients.your-server.de
 Address: 135.181.77.57
 
 Incident type: 3389/tcp
 First attempt: 17-dec-2020 18:55:00 GMT-0500
 Last attempt: 17-dec-2020 18:55:00 GMT-0500
 Total attempts: 411
 
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:4541 -> 128.59.150.55:3389 6 1123
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:3512 -> 128.59.154.255:3389 6 374
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:4762 -> 128.59.65.213:3389 6 328
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:5763 -> 128.59.207.63:3389 6 2761
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:5772 -> 128.59.246.143:3389 6 2647
 17-Dec-2020 18:53:12 GMT-0500 135.181.77.57:3723 -> 128.59.246.143:3389 6 374
 17-Dec-2020 18:53:13 GMT-0500 135.181.77.57:6215 -> 128.59.178.95:3389 6 1683
 17-Dec-2020 18:53:13 GMT-0500 135.181.77.57:6402 -> 128.59.29.175:3389 6 1784
 17-Dec-2020 18:53:13 GMT-0500 135.181.77.57:6537 -> 128.59.150.55:3389 6 2647
 17-Dec-2020 18:53:13 GMT-0500 135.181.77.57:6404 -> 128.59.65.213:3389 6 1878
 17-Dec-2020 18:53:15 GMT-0500 135.181.77.57:9397 -> 128.59.65.213:3389 6 1946
 17-Dec-2020 18:53:16 GMT-0500 135.181.77.57:9998 -> 128.59.246.143:3389 6 1534
 17-Dec-2020 18:53:16 GMT-0500 135.181.77.57:10159 -> 128.59.154.100:3389 6 1657
 17-Dec-2020 18:53:16 GMT-0500 135.181.77.57:10767 -> 128.59.239.35:3389 6 2729
 17-Dec-2020 18:53:19 GMT-0500 135.181.77.57:14391 -> 128.59.65.213:3389 6 1894
 17-Dec-2020 18:53:19 GMT-0500 135.181.77.57:14705 -> 128.59.29.175:3389 6 1824
 17-Dec-2020 18:53:19 GMT-0500 135.181.77.57:14797 -> 128.59.178.95:3389 6 1868
 17-Dec-2020 18:53:20 GMT-0500 135.181.77.57:14984 -> 128.59.207.63:3389 6 2381
 17-Dec-2020 18:53:20 GMT-0500 135.181.77.57:14922 -> 128.59.239.35:3389 6 2349
 17-Dec-2020 18:53:20 GMT-0500 135.181.77.57:14875 -> 128.59.150.55:3389 6 2045
 17-Dec-2020 18:53:20 GMT-0500 135.181.77.57:15162 -> 128.59.65.213:3389 6 1761
 17-Dec-2020 18:53:20 GMT-0500 135.181.77.57:15837 -> 128.59.154.255:3389 6 2695
 17-Dec-2020 18:53:21 GMT-0500 135.181.77.57:16241 -> 128.59.154.100:3389 6 1410
 17-Dec-2020 18:53:24 GMT-0500 135.181.77.57:20386 -> 128.59.246.143:3389 6 2595
 17-Dec-2020 18:53:24 GMT-0500 135.181.77.57:20334 -> 128.59.154.100:3389 6 1651
 17-Dec-2020 18:53:24 GMT-0500 135.181.77.57:21108 -> 128.59.65.213:3389 6 1900
 17-Dec-2020 18:53:24 GMT-0500 135.181.77.57:21140 -> 128.59.150.55:3389 6 1914
 17-Dec-2020 18:53:25 GMT-0500 135.181.77.57:21258 -> 128.59.207.63:3389 6 2159
 17-Dec-2020 18:53:28 GMT-0500 135.181.77.57:25533 -> 128.59.239.35:3389 6 2697
 17-Dec-2020 18:53:28 GMT-0500 135.181.77.57:25080 -> 128.59.29.175:3389 6 1444
 17-Dec-2020 18:53:28 GMT-0500 135.181.77.57:25274 -> 128.59.180.83:3389 6 1671
 17-Dec-2020 18:53:28 GMT-0500 135.181.77.57:25694 -> 128.59.65.213:3389 6 2033
 17-Dec-2020 18:53:29 GMT-0500 135.181.77.57:26737 -> 128.59.246.143:3389 6 2647
 17-Dec-2020 18:53:29 GMT-0500 135.181.77.57:26560 -> 128.59.154.100:3389 6 1657
 17-Dec-2020 18:53:29 GMT-0500 135.181.77.57:27165 -> 128.59.29.175:3389 6 1876
 17-Dec-2020 18:53:29 GMT-0500 135.181.77.57:27242 -> 128.59.150.55:3389 6 1898
 17-Dec-2020 18:53:32 GMT-0500 135.181.77.57:30853 -> 128.59.180.83:3389 6 1862
 17-Dec-2020 18:53:33 GMT-0500 135.181.77.57:31436 -> 128.59.29.175:3389 6 1090
 17-Dec-2020 18:53:33 GMT-0500 135.181.77.57:32408 -> 128.59.207.63:3389 6 2761
 17-Dec-2020 18:53:34 GMT-0500 135.181.77.57:32748 -> 128.59.154.100:3389 6 1050
 17-Dec-2020 18:53:37 GMT-0500 135.181.77.57:36558 -> 128.59.65.213:3389 6 1930
 17-Dec-2020 18:53:37 GMT-0500 135.181.77.57:36567 -> 128.59.154.255:3389 6 2741
 17-Dec-2020 18:53:37 GMT-0500 135.181.77.57:36894 -> 128.59.154.100:3389 6 1653
 17-Dec-2020 18:53:38 GMT-0500 135.181.77.57:38467 -> 128.59.65.213:3389 6 1946
 17-Dec-2020 18:53:40 GMT-0500 135.181.77.57:40849 -> 128.59.154.255:3389 6 2512
 17-Dec-2020 18:53:40 GMT-0500 135.181.77.57:41204 -> 128.59.246.143:3389 6 2679
 17-Dec-2020 18:53:41 GMT-0500 135.181.77.57:42269 -> 128.59.207.63:3389 6 2807
 17-Dec-2020 18:53:41 GMT-0500 135.181.77.57:42714 -> 128.59.65.213:3389 6 2033
 17-Dec-2020 18:53:42 GMT-0500 135.181.77.57:43265 -> 128.59.246.143:3389 6 2299
 Attempts continue…

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