Mr Belmer has listed the 14 different ports he observed as being scanned by eBay and has concluded that the port scanning he observed being run from eBay was “clearly malicious behaviour and may fall on the wrong side of the law”. Windows Remote Desktop, VNC, TeamViewer and others. The ports scanned by eBay are generally used for remote access and remote support tools e.g. In the recent observations of port scanning by eBay according to US-based security researcher Charlie Belmer and recorded on his blog, Mr Belmer reported that eBay appeared to be looking for VNC services being run on the host (the same thing that was reported for bank sites).
Port scanning can also be used to counter the activities of cybercriminals by scanning for remote-control access ports to detect any criminals that may be logged into a user’s computer in order to impersonate them on various platforms/sites e.g. This can help an attacker to determine what services may be running on the system and, therefore, get an idea of the operating system a target user has. Port scanning scripts are used to determine which ports a system may be listening via, by sending packets of information to a user’s machine and varying the destination port. Port scanning is something that many people associate with cyber-attacks and penetration (‘pen’) testing. Reports that eBay has been running port scans against the computers of visitors to the platform have caused alarm over potential security issues.
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