ISS Security Brief: "Stumbler" Distributed Stealth Scanning Network
From: X-Force (xforce_at_iss.net)
To: email@example.com Date: Thu, 19 Jun 2003 23:52:16 -0400 (EDT)
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Internet Security Systems Security Alert
June 19, 2003
"Stumbler" Distributed Stealth Scanning Network
X-Force has been tracking reports of suspicious and widespread Internet
traffic with a TCP Window size of 55808. A substantial amount of traffic
captured from sites around the world point to a new distributed port
scanning system. X-Force has analyzed malware that appears to be a client
capable of scanning and receiving network mapping data from other similar
clients distributed across the Internet. X-Force has named this malware,
For the complete ISS X-Force Security Alert, please visit:
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