Browse Definitions :
Definition

acoustical mesh network

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

SearchCompliance
  • ISO 31000 Risk Management

    The ISO 31000 Risk Management framework is an international standard that provides businesses with guidelines and principles for ...

  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

SearchSecurity
  • Pretty Good Privacy (PGP)

    Pretty Good Privacy or PGP was a popular program used to encrypt and decrypt email over the internet, as well as authenticate ...

  • email security

    Email security is the process of ensuring the availability, integrity and authenticity of email communications by protecting ...

  • Blowfish

    Blowfish is a variable-length, symmetric, 64-bit block cipher.

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

SearchStorage
  • direct access

    In computer storage, direct access is the process of reading and writing data on a storage device by going directly to where the ...

  • kibi, mebi, gibi, tebi, pebi and exbi

    Kibi, mebi, gibi, tebi, pebi and exbi are binary prefix multipliers that, in 1998, were approved as a standard by the ...

  • holographic storage (holostorage)

    Holographic storage is computer storage that uses laser beams to store computer-generated data in three dimensions.

Close