Protecting your devices from cryptojacking

Illicit Crypto Mining Hacks Machine Resources 

After a few years of low activity, crypto-jacking is growing again. The fraudsters use virtual ATMs and other devices' processing power to mine their crypto assets and convert them into cash. 

The methods used by the criminals continue to advance. They no longer install the software on other machines; instead, they use certain codes to infect the device and then use the machine without the client's knowledge. 

It is one of the favourite methods criminals adopt to transfer money where the application uses Bitcoins or Ethereum. Such currencies pay ransomware when mining malware is deployed on PCs or unsecured servers. 

It secretly exhausts the computing resources of the local machine to get the virtual currency that is transferred to the wallet of operators. Some of the malware used for this purpose are Coinhive or Cryptoloot.   

One of the infamous options for crypto-jacking is Monero, which is considered ideal for unauthorised mining. It is designed to run on non-specialised hardware, which one can install on unsuspecting systems worldwide. 

They use tactics that revolve around getting past the authentication techniques- often used to validate between two people's traffic. There are many ways to prevent such apps, like network detection, blocking the mining domains and enforcing limits on such activities.

Exchanges & Virtual Transactions 

Cybercriminals indulged in reverse proxy phishing, dusting, crypto-jacking and clipping attacks to steal and mine the exchanges. The markets capitalised $2 trillion in March last year, and there has been more interest in such options globally. However, with the influx of investments, cryptocurrency wallets have multiple cybersecurity risks as the exchanges evolve.

Some virtual wallets allow the users to be accessed before it is patched or updated, and this is not true for hardware wallets that are purpose-built and require a sophisticated skill set to be compromised.

How To Protect Yourself?

• Install anti-virus software and set apps to auto-update. You should never download and install apps or software offered by untrusted sources, and do not click on unknown links that can lead you to dangerous sites.

• The commonest symptoms of crypto-jacking are that the machine's performance declines and your apps slow down or drain the battery. [For example, if the machine CPU gives the average speed of 500 hashes per sec, equivalent to less than a dollar weekly.] 

• Since the miners can earn more by investing in increasing the computer power or hijacking other machines to reroute their computer power, the criminals download the coin mining software to a device and then redesign it to report to their server.

• If your machine has been crypto-jacked, the fan will slow down and strain to keep up for no reason. You can use certain browser extensions and install adblockers to defend against such attacks.

• To avoid it, do not use public Wi-Fi that offers poorly protected networks that are often most vulnerable to such attacks; instead, use VPN to surf on unsecured networks.