Poland's Railway System Disrupted by Cheap Radio Hack

Poland's railway system experienced disruptions over the weekend, with more than 20 trains being brought to a halt through what is being described as a "cyberattack." However, cybersecurity experts have revealed that the attack did not involve any sophisticated hacking techniques. Instead, the saboteurs used a simple radio command to trigger the trains' emergency stop function. By sending a series of three acoustic tones at a specific frequency, anyone with off-the-shelf radio equipment could halt a Polish train. The attack highlights the vulnerability of the railway system's unencrypted and unauthenticated radio communication, which can be easily spoofed. The Polish government plans to upgrade the system by 2025 to use more secure GSM cellular radios.