SANS ISC: InfoSec Handlers Diary Blog - SANS Internet Storm Center

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InfoSec Handlers Diary Blog

Thanks to Pat for pointing out a sharp increase in the number of sources scanning for port 3389 [1].

Port 3389 / TCP is used by Microsoft Terminal Services, and has been a continuing target of attacks. If you have any logs you want to share, please submit them via our contact page . In particular if you observed anything different the last couple days.

[1] https://isc.sans.edu/port.html?port=3389

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Johannes B. Ullrich, Ph.D.
SANS Technology Institute
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