The Hacker News Logo
Subscribe to Newsletter

The Hacker News — Cyber Security and Hacking News Website: Air-Gapped Networks

How to Steal Bitcoin Wallet Keys (Cold Storage) from Air-Gapped PCs

How to Steal Bitcoin Wallet Keys (Cold Storage) from Air-Gapped PCs

April 24, 2018Wang Wei
Dr. Mordechai Guri, the head of R&D team at Israel's Ben Gurion University, who previously demonstrated various methods to steal data from an air-gapped computer, has now published new research named " BeatCoin ." BeatCoin is not a new hacking technique; instead, it's an experiment wherein the researcher demonstrates how all previously discovered out-of-band communication methods can be used to steal private keys for a cryptocurrency wallet installed on cold storage, preferably an air-gapped computer or Raspberry Pi. For those unaware, keeping your cryptocurrency protected in a wallet on a device which is entirely offline is called cold storage. Since online digital wallets carry different security risks, some people prefer keeping their private keys offline. Air-gapped computers are those that are isolated from the Internet, local networks, Bluetooth and therefore, are believed to be the most secure devices and are difficult to infiltrate or exfiltrate.
MOSQUITO Attack Allows Air-Gapped Computers to Covertly Exchange Data

MOSQUITO Attack Allows Air-Gapped Computers to Covertly Exchange Data

March 12, 2018Mohit Kumar
The team of security researchers—who last month demonstrated how attackers could steal data from air-gapped computers protected inside a Faraday cage—are back with its new research showing how two (or more) air-gapped PCs placed in the same room can covertly exchange data via ultrasonic waves. Air-gapped computers are believed to be the most secure setup wherein the systems remain isolated from the Internet and local networks, requiring physical access to access data via a USB flash drive or other removable media. Dubbed MOSQUITO , the new technique, discovered by a team of researchers at Israel's Ben Gurion University, works by reversing connected speakers (passive speakers, headphones, or earphones) into microphones by exploiting a specific audio chip feature. Two years ago, the same team of researchers demonstrated how attackers could covertly listen to private conversations in your room just by reversing your headphones (connected to the infected computer) into a micr
Brutal Kangaroo: CIA-developed Malware for Hacking Air-Gapped Networks Covertly

Brutal Kangaroo: CIA-developed Malware for Hacking Air-Gapped Networks Covertly

June 22, 2017Swati Khandelwal
WikiLeaks has published a new batch of the ongoing Vault 7 leak , this time detailing a tool suite – which is being used by the CIA for Microsoft Windows that targets "closed networks by air gap jumping using thumb drives," mainly implemented in enterprises and critical infrastructures. Air-gapped computers that are isolated from the Internet or other external networks are believed to be the most secure computers on the planet have become a regular target in recent years. Dubbed Brutal Kangaroo (v1.2.1), the tool suit was allegedly designed by the Central Intelligence Agency (CIA) in year 2012 to infiltrate a closed network or air-gapped computer within an organization or enterprise without requiring any direct access. The previous version of Brutal Kangaroo was named as EZCheese , which was exploiting a vulnerability that was zero-day until March 2015, though the newer version was using " unknown link file vulnerability (Lachesis/RiverJack) related to the lib
New Hack Uses Hard Drive's Noise to Transfer Stolen Data from Air-Gapped Computer

New Hack Uses Hard Drive's Noise to Transfer Stolen Data from Air-Gapped Computer

August 12, 2016Mohit Kumar
Air-gapped computers that are isolated from the Internet and other computers are long considered to be the most secure and safest place for storing data in critical infrastructures such as industrial control systems, financial institutions, and classified military networks. However, these systems have sometimes been targeted in the past, which proves that these isolated systems are not completely secure. Previous techniques of hacking air gap computers include: AirHopper that turns a computer's video card into an FM transmitter to capture keystrokes; BitWhisper that relies on heat exchange between two computer systems to stealthily siphon passwords or security keys; Hacking air-gapped computer using a basic low-end mobile phone with GSM network; and Stealing the secret cryptographic key from an air-gapped computer placed in another room using a Side-Channel Attack. Now, researchers have devised a new method to steal data from an infected computer even if it has no
Chinese Hackers Target Air-Gapped Networks in Southeast Asia

Chinese Hackers Target Air-Gapped Networks in Southeast Asia

April 13, 2015Swati Khandelwal
A State-sponsored Cyber Espionage Group -- most likely linked to the Chinese government becomes the first group to target the so-called " Air-Gapped Networks " that aren't directly connected to the Internet. What are Air-Gapped systems? Air-gapped systems are known to be the most safest and secure systems on the earth. These systems are isolated from the Internet or any other Internet-connected computers or external networks. Air-gapped systems are generally used in the critical situations that demand high security like in payment networks to process debit and credit card transactions, military networks, and in industrial control systems that operate critical infrastructure of the Nation. Why Air-Gapped? It is very difficult to siphon data from Air-Gapped systems because it requires a physical access to the target system or machine in order to do that and gaining physical access is possible only by using removable devices such as a firewire cab
Exclusive Deals

Get Daily News Updates By Email

Join over 350,000 information security professionals — Get the best of our cyber security coverage delivered to your inbox every morning.