ultrasonic signals | Breaking Cybersecurity News | The Hacker News

Researchers have demonstrated how sonic and ultrasonic signals (inaudible to human) can be used to cause physical damage to hard drives just by playing ultrasonic sounds through a target computer's own built-in speaker or by exploiting a speaker near the targeted device. Similar research was conducted last year by a group of researchers from Princeton and Purdue University, who demonstrated a denial-of-service (DoS) attack against HDDs by exploiting a physical phenomenon called acoustic resonance. Since HDDs are exposed to external vibrations, researchers showed how specially crafted acoustic signals could cause significant vibrations in HDDs internal components, which eventually leads to the failure in systems that relies on the HDD. To prevent a head crash from acoustic resonance, modern HDDs use shock sensor-driven feedforward controllers that detect such movement and improve the head positioning accuracy while reading and writing the data. However, according to a ne

Your smartphone may have some apps that are continuously listening inaudible, high-frequency ultrasonic sounds from your surroundings and they know where you go, what you like and dislike — all without your knowledge. Ultrasonic Cross-Device Tracking is a new technology that some marketers and advertising companies are currently using to track users across multiple devices and have access to more information than ever before for ad targeting. For example, retail stores you visit, a commercial on TV or an advertisement on a web page can emit a unique "ultrasonic audio beacon" that can be picked up by your device's mobile application containing a receiver. This information helps advertisers to create your personalized profile and collect your interests by figuring out that both devices probably belongs to you, allowing them to target you with interest-based advertisements. More & More Apps Have Started Using Ultrasonic Tracking Technology In fact, while presen

To minimize the risk of privilege misuse, a trend in the privileged access management (PAM) solution market involves implementing just-in-time (JIT) privileged access. This approach to  privileged identity management  aims to mitigate the risks associated with prolonged high-level access by granting privileges temporarily and only when necessary, rather than providing users with continuous high-level privileges. By adopting this strategy, organizations can enhance security, minimize the window of opportunity for potential attackers and ensure that users access privileged resources only when necessary.  What is JIT and why is it important?   JIT privileged access provisioning  involves granting privileged access to users on a temporary basis, aligning with the concept of least privilege. This principle provides users with only the minimum level of access required to perform their tasks, and only for the amount of time required to do so. One of the key advantages of JIT provisioning