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☐ β˜† βœ‡ McAfee Blogs

Bitcoin Security: Mining Threats You Need to Know

By: Jasdev Dhaliwal β€” July 21st 2025 at 04:01
Working from home

The value of Bitcoin has had its ups and downs since its inception in 2013, but its recent skyrocket in value has created renewed interest in this virtual currency. The rapid growth of this alternative currency has dominated headlines and ignited a cryptocurrency boom that has consumers everywhere wondering how to get a slice of the Bitcoin pie. For those who want to join the craze without trading traditional currencies like U.S. dollars (i.e., fiat currency), a process called Bitcoin mining is an entry point. However, Bitcoin mining poses a number of security risks that you need to know.

What Is Bitcoin Mining?

Mining for Bitcoin is like mining for goldβ€”you put in the work and you get your reward. But instead of back-breaking labor, you earn the currency with your time and computer processing power. Miners, as they are called, essentially maintain and secure Bitcoin’s decentralized accounting system. Bitcoin transactions are recorded in a digital ledger called a blockchain. Bitcoin miners update the ledger by downloading a special piece of software that allows them to verify and collect new transactions. Then, they must solve a mathematical puzzle to secure access to add a block of transactions to the chain. In return, they earn Bitcoins, as well as a transaction fee.

What Are Bitcoin Security Risks?

As the digital currency has matured, Bitcoin mining has become more challenging. In the beginning, a Bitcoin user could mine on their home computer and earn a good amount of the digital currency, but these days the math problems have become so complicated that it requires a lot of expensive computing power. This is where the risks come in. Since miners need an increasing amount of computer power to earn Bitcoin, some have started compromising public Wi-Fi networks so they can access users’ devices.

One example of this security breach happened at a coffee shop in Buenos Aires, which was infected with malware that caused a 10-second delay when logging in to the cafe’s Wi-Fi network. The malware authors used this time delay to access the users’ laptops for mining. In addition to public Wi-Fi networks, millions of websites are being compromised to access users’ devices for mining. When an attacker loads mining software onto devices without the owner’s permission, it’s called a cryptocurrency mining encounter or cryptojacking.

It’s estimated that 50 out of every 100,000 devices have encountered a cryptocurrency miner. Cryptojacking is a widespread problem and can slow down your device; though, that’s not the worst that can happen. Utility costs are also likely to go through the roof. A device that is cryptojacked could have 100 percent of its resources used for mining, causing the device to overheat, essentially destroying it.

What Are Some Bitcoin Privacy Tips?

Now that you know a little about mining and the Bitcoin security risks associated with it, here are some tips to keep your devices safe as you monitor theΒ cryptocurrency market:

  • Avoid public Wi-Fi networks: These networks often aren’t secured, opening your device and information up to a number of threats.
  • Use a VPN: If you’re away from your secure home or work network, consider using a virtual private network (VPN). A VPN is a piece of software that gives you a secure connection to the Internet, so that third parties cannot intercept or read your data. A product likeΒ McAfee+Β can help safeguard your online privacy no matter where you go.
  • Secure your devices: New Bitcoin threats, security concerns, and malware are emerging all of the time. Protect your devices and information withΒ comprehensive security software

The post Bitcoin Security: Mining Threats You Need to Know appeared first on McAfee Blog.

☐ β˜† βœ‡ The Hacker News

Cyber Criminals Exploit GitHub and FileZilla to Deliver Malware Cocktail

By: Newsroom β€” May 20th 2024 at 09:26
A "multi-faceted campaign" has been observed abusing legitimate services like GitHub and FileZilla to deliver an array of stealer malware and banking trojans such as Atomic (aka AMOS), Vidar, Lumma (aka LummaC2), and Octo by impersonating credible software like 1Password, Bartender 5, and Pixelmator Pro. "The presence of multiple malware variants suggests a broad cross-platform targeting
☐ β˜† βœ‡ The Hacker News

Bitcoin Forensic Analysis Uncovers Money Laundering Clusters and Criminal Proceeds

By: Newsroom β€” May 1st 2024 at 14:25
A forensic analysis of a graph dataset containing transactions on the Bitcoin blockchain has revealed clusters associated with illicit activity and money laundering, including detecting criminal proceeds sent to a crypto exchange and previously unknown wallets belonging to a Russian darknet market. The findings come from Elliptic in collaboration with researchers from the&
☐ β˜† βœ‡ The Hacker News

E-Root Marketplace Admin Sentenced to 42 Months for Selling 350K Stolen Credentials

By: Newsroom β€” March 19th 2024 at 04:47
A 31-year-old Moldovan national has been sentenced to 42 months in prison in the U.S. for operating an illicit marketplace called E-Root Marketplace that offered for sale hundreds of thousands of compromised credentials, the Department of Justice (DoJ) announced. Sandu Boris Diaconu was charged with conspiracy to commit access device and computer fraud and possession of 15 or more unauthorized
☐ β˜† βœ‡ The Hacker News

LockBit Ransomware Hacker Ordered to Pay $860,000 After Guilty Plea in Canada

By: Newsroom β€” March 14th 2024 at 13:47
A 34-year-old Russian-Canadian national has been sentenced to nearly four years in jail in Canada for his participation in the LockBit global ransomware operation. Mikhail Vasiliev, an Ontario resident, was originally arrested in November 2022 and charged by the U.S. Department of Justice (DoJ) with "conspiring with others to intentionally damage protected computers and to transmit
☐ β˜† βœ‡ The Hacker News

LockBit Ransomware's Darknet Domains Seized in Global Law Enforcement Raid

By: Newsroom β€” February 20th 2024 at 05:25
Update: The U.K. National Crime Agency (NCA) has confirmed the takedown of LockBit infrastructure. Read here for more details.An international law enforcement operation has led to the seizure of multiple darknet domains operated by LockBit, one of the most prolific ransomware groups, marking the latest in a long list of digital takedowns. While the full extent of the effort, codenamed 
☐ β˜† βœ‡ The Hacker News

CACTUS Ransomware Exploits Qlik Sense Vulnerabilities in Targeted Attacks

By: Newsroom β€” November 30th 2023 at 11:16
A CACTUS ransomware campaign has been observed exploiting recently disclosed security flaws in a cloud analytics and business intelligence platform called Qlik Sense to obtain a foothold into targeted environments. "This campaign marks the first documented instance [...] where threat actors deploying CACTUS ransomware have exploited vulnerabilities in Qlik Sense for initial access,"
☐ β˜† βœ‡ The Hacker News

Randstorm Exploit: Bitcoin Wallets Created b/w 2011-2015 Vulnerable to Hacking

By: Newsroom β€” November 20th 2023 at 09:16
Bitcoin wallets created between 2011 and 2015 are susceptible to a new kind of exploit calledΒ RandstormΒ that makes it possible to recover passwords and gain unauthorized access to a multitude of wallets spanning several blockchain platforms. "Randstorm() is a term we coined to describe a collection of bugs, design decisions, and API changes that, when brought in contact with each other, combine
☐ β˜† βœ‡ KitPloit - PenTest Tools!

Wallet-Transaction-Monitor - This Script Monitors A Bitcoin Wallet Address And Notifies The User When There Are Changes In The Balance Or New Transactions

By: Zion3R β€” July 25th 2023 at 13:14


This script monitors a Bitcoin wallet address and notifies the user when there are changes in the balance or new transactions. It provides real-time updates on incoming and outgoing transactions, along with the corresponding amounts and timestamps. Additionally, it can play a sound notification on Windows when a new transaction occurs.

    Requirements

    Python 3.x requests library: You can install it by running pip install requests. winsound module: This module is available by default on Windows.

    How to Run

    • Make sure you have Python 3.x installed on your system.
    • pip install -r requirements.txt
    • Clone or download the script file wallet_transaction_monitor.py from this repository.
    • Place the sound file (in .wav format) you want to use for the notification in the same directory as the script. Make sure to replace "soundfile.wav" in the script with the actual filename of your sound file.
    • Open a terminal or command prompt and navigate to the directory where the script is located.
    • Run the script by executing the following command:
    python wallet_transaction_monitor.py

    The script will start monitoring the wallet and display updates whenever there are changes in the balance or new transactions. It will also play the specified sound notification on Windows.

    Important Notes

    This script is designed to work on Windows due to the use of the winsound module for sound notifications. If you are using a different operating system, you may need to modify the sound-related code or use an alternative method for audio notifications. The script uses the Blockchain.info API to fetch wallet data. Please ensure you have a stable internet connection for the script to work correctly. It's recommended to run the script in the background or keep the terminal window open while monitoring the wallet.



    ☐ β˜† βœ‡ Naked Security

    History revisited: US DOJ unseals Mt. Gox cybercrime charges

    By: Naked Security writer β€” June 12th 2023 at 16:58
    Though the mills of the Law grind slowly/Yet they grind exceeding small/Though with patience they stand waiting/With exactness grind they all...

    ☐ β˜† βœ‡ Naked Security

    Silk Road drugs market hacker pleads guilty, faces 20 years inside

    By: Paul Ducklin β€” November 8th 2022 at 17:58
    Jurisprudence isn't like arithmetic... two negatives never make a positive!

    ☐ β˜† βœ‡ Naked Security

    Canadian cybercriminal pleads guilty to β€œNetWalker” attacks in US

    By: Paul Ducklin β€” July 4th 2022 at 14:09
    Bust in Canada, now bust in the USA as well.

    ☐ β˜† βœ‡ Naked Security

    Self-styled β€œCrocodile of Wall Street” arrested with husband over Bitcoin megaheist

    By: Naked Security writer β€” February 9th 2022 at 14:44
    The cops say they've recovered 80% of a $72 million cryptocoin heist... but the recovered funds alone are now worth over $4 billion!

    ☐ β˜† βœ‡ Naked Security

    Plundered bitcoins recovered by FBI – all 3,879-and-one-sixth of them!

    By: Paul Ducklin β€” December 22nd 2021 at 17:57
    Phew! An audacious crime... that didn't work out.

    ❌