Surge in Port 12345 Traffic Sparks Security Warnings About NetBus Trojan

Increased activity on TCP port 12345 -- best known as both the NetBus Trojan's default port and the port used for a Trend Micro antivirus product -- has the security community arguing as to who is responsible. Is it Trend Micro . . . Increased activity on TCP port 12345 -- best known as both the NetBus Trojan's default port and the port used for a Trend Micro antivirus product -- has the security community arguing as to who is responsible. Is it Trend Micro customers who have yet to patch known vulnerabilities, script kiddies looking for an easy hit, or an Internet X-file? A recent increase in port scanning activity on the Internet has centred around Transmission Control Protocol (TCP) port 12345.

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