Browse Definitions:
Definition

acoustical mesh network

Contributor(s): Matthew Haughn

An acoustical mesh network is a decentralized communication system that transmits data by using sound to connect computers.

This relatively unknown network type was first used to enable robust underwater communication. More recently, the method has been used in proof-of-concept (POC) trials for acoustical infections as a method of communication among air-gapped computers. Air gapping is an extreme measure used to secure extremely sensitive data against exfiltration.

There are both legitimate and unscrupulous uses for acoustical mesh networks. Hackers can modify software designed for underwater networking to enable air-based and covert communication and use acoustical mesh networks for covert communication with infected systems. Due to their already limited bandwidth (20bits/s), these types of mesh networks commonly use a partial mesh network, in which communication is conducted through the fastest points rather than connecting all endpoints. The networks often use ultrasonic sound outside or at the edge of the range of human hearing. The use of sound beyond the range of human hearing means that malware can stealthily send data without an Internet connection. 

POC trials have demonstrated acoustical infections and all elements of the attack have been demonstrated in the real world, strongly suggesting that malware can infect through acoustic channels. BadBIOS, a stealth infection discovered by Dragos Ruiu, is one of the first malwares suspected to create acoustical mesh networks. Ruiu, a security researcher, reported that the malware infected the firmware of the machine, communicating with and comproming other nearby computers through sound.

This was last updated in January 2017

Continue Reading About acoustical mesh network

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

SearchSecurity

  • black hat

    Black hat refers to a hacker who breaks into a computer system or network with malicious intent.

  • copyright

    Copyright is a legal term describing ownership of control of the rights to the use and distribution of certain works of creative ...

  • keylogger (keystroke logger or system monitor)

    A keylogger, sometimes called a keystroke logger or system monitor, is a type of surveillance technology used to monitor and ...

SearchHealthIT

  • population health management (PHM)

    Population health management (PHM) is a discipline within the healthcare industry that studies and facilitates care delivery ...

  • ICD-10-PCS

    The International Classification of Diseases, 10th Revision, Procedure Coding System (ICD-10-PCS) is a U.S. cataloging system for...

  • U.S. National Library of Medicine (NLM)

    The U.S. National Library of Medicine (NLM) is the largest biomedical library in the world.

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

SearchStorage

  • hybrid hard drive (HHD)

    A hybrid hard drive (HHD), sometimes known as a solid-state hybrid drive (SSHD), is a mass storage device that combines a ...

  • USB flash drive

    A USB flash drive -- also known as a stick, thumb or pen drive -- is a plug-and-play portable storage device that uses flash ...

  • open source storage

    Open source storage is data storage software developed in a public, collaborative manner that permits the free use, distribution ...

SearchSolidStateStorage

  • RRAM or ReRAM (resistive RAM)

    RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a ...

  • JEDEC

    JEDEC is a global industry group that develops open standards for microelectronics.

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification written for internally mounted storage...

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close