Can intruders find a wireless network if the Service Set Identifier (SSID) is hidden?

When a wireless network hides its Service Set Identifier (SSID), it is designed to make the network less visible to casual users. However, this does not make the network invisible to determined intruders. Even with a hidden SSID, the network can still be discovered through various means. For instance, when a device connects to a hidden network, it sends out probe requests that include the SSID, which can be intercepted by someone using network analysis tools.

Moreover, skilled attackers can perform a process called "wardriving," where they travel around with equipment that scans for wireless signals, even those that do not broadcast their SSID. In this way, intruders can find hidden networks, especially if they are using advanced tools or techniques. Thus, while hiding the SSID adds a layer of obscurity, it does not equate to security, as intruders have methods available to detect the presence of these networks.

This understanding highlights the importance of implementing robust security measures beyond just hiding the SSID, including using strong encryption protocols like WPA3, regularly updating firmware, and applying good password policies to protect the wireless network from unauthorized access.