A new attack method called 'SmartAttack' exploits smartwatches to covertly exfiltrate data from air-gapped systems by using ultrasonic signals emitted from a compromised computer's speaker. Researchers highlight the attack's reliance on malware to gather sensitive information, which is then transmitted to nearby smartwatches that can decode the signals. To mitigate this threat, it is recommended to prohibit smartwatches in secure environments and consider hardware modifications to air-gapped systems.