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DETECTION OVERVIEW
Risk Factors
Port scans are easy to run and have few disadvantages. After an attacker identifies services responding over an open port, they could flood that device with a large number of SYN packets to prevent legitimate requests from the network or take steps to exploit any vulnerabilities known for that service.
The system might change the risk score for this detection.
Kill Chain
$source sent an unusually high number of TCP SYN packets to many IP addresses or ports across your network. An attacker might be looking for devices or services that are listening on open TCP ports. This detection appears when a device sends an unusually large number of TCP SYN packets without completing the connection across a large number of ports or IP addresses.
An attacker initiates a TCP SYN scan to search for services listening on open ports. Port scans are a common form of reconnaissance, which an attacker will perform after the initial compromise. Tools for performing such scans are widely available, including the popular Nmap Security Scanner.
Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.
ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response
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This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.
Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.
Learn how NDR from RevealX helps security teams detect and investigate more adversary TTPs in the MITRE ATT&CK framework than rule-based tools.
