One Article Review
| Source |  AlienVault Blog |
|---|---|
| Identifiant | 487281 |
| Date de publication | 2018-02-21 14:00:00 (vue: 2018-02-21 14:00:00) |
| Titre | Crypto-Miners: What Are They and What Steps You Can Take to Protect Yourself |
| Texte |
Bitcoin's value grew significantly in 2017. At the beginning of the year, a single Bitcoin was worth less than $1000. By year's end, its price had grown to over $13,000. That's after peaking at $19,086.84 on 19 December.
Such growth didn't go unnoticed by digital attackers or by organizations looking to supplement their online advertising revenue. Both responded by deploying crypto-miners. These tools help generate money for domain owners, yet they oftentimes have negative consequences for unsuspecting users exposed to them.
To better understand the growing threat of crypto-miners, let's take a look at how crypto-mining works in general, how bad actors are abusing them to take advantage of ordinary people, and how users can protect themselves.
What Are Crypto-Miners?
Crypto-miners are tools that "mine," or generate, new units of a cryptocurrency like Bitcoin. They do so by completing mathematical puzzles that constitute what Hacker Noon's Chris Herd calls "proof of work calculations" for the new units. The process of mining doesn't just generate cryptocurrency; it also adds, secures, and verifies transactions to the blockchain.
A deeper dive into how cryptocurrencies work is necessary to better understand crypto-miners. Digital currency like Bitcoin runs on the blockchain, a ledger of transactions which is distributed across the entire community of users who own units of that cryptocurrency. Benzinga staff writer Shanthi Rexaline explains it's here where mining comes into play:
Every single transaction made and the ownership of every single cryptocurrency in circulation is recorded in the blockchain. The blockchain is run by miners, who use powerful computers that tally the transactions. Their function is to update each time a transaction is made and also ensure the authenticity of information, thereby ascertaining that each transaction is secure and is processed properly and safely.
Every 10 minutes, mining computers collect a "block," or a few hundred pending Bitcoin transactions, and turn them into a mathematical puzzle. Those computers then use special equipment to compete against one another to solve that puzzle. Whoever completes the challenge first is eligible to receive a reward of 12.50+0.943 BTC, which is worth approximately $113,834.49 USD as of 7 February 2018.
The Economist explains that the first miner to find the solution to the mathematical puzzle can announce it to the Bitcoin community. At that point, the other miners verify if the solution is correct. Assuming it is, the block is cryptographically added to the ledger, with the miners moving on to the next grouping of transactions, thereby adding to the blockchain.
Source: Bitcoin 2.0 (SlideShare)
How Malware Authors Are Abusing Crypto-Mining
Crypto-mining isn't itself malicious in nature. But bad actors are abusing it for nefarious purposes. They're doing so by illegally accessing important business assets such as servers used for electronic medical record (EMR) systems or |
| Envoyé | Oui |
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