• "deanonymizing transactions"

    From noreply@noreply@dirge.harmsk.com to comp.misc on Sat Jul 19 18:22:11 2025
    From Newsgroup: comp.misc


    as someone posted back in may . . .

    Date: Tue, 27 May 2025 09:52:15 +0000
    Message-Id: <20250527.095215.9aa06e66@yamn.paranoici.org>
    References: <64664778e2937035506b5458a5e1f21158b75aa8@i2pn2.org>
    Newsgroups: alt.privacy.anon-server
    ...
    I proposed long ago to the Nym developers to support Monero. >><https://nym.com/blog/new-mixnet-integration-nym-for-monero>

    <https://dl.acm.org/doi/10.1016/j.cose.2019.101684>
    And what works for Tor and Bitcoin ... ><https://dl.acm.org/doi/abs/10.1145/3589335.3651487>
    Nym is a scam and a honeypot. Though they try hard
    to make big money with their snake oil they'll fail.

    which seemed worth looking up, especially in the context of what could possibly be motivating these "tuta-tor/mini-tor/mini-mailer" promoters
    beyond their _eternal september_ onslaught against anonymous remailers,
    could these troll farm operatives be enticed by perks, fringe benefits,
    rewards for their unwavering allegiance to the almighty powers that be
    (a significant portion of their vast troll farm apparatus must be a.i.)

    over three decades of non-stop continual belligerence against anything indicates pathological contempt, financial gain, or more probably both
    i.e. at least where their mere mortal humantm work force are concerned
    (and the bible explains that no one can have their cake and eat it too) . . .

    (using Tor Browser 14.5.4)
    https://dl.acm.org/doi/10.1016/j.cose.2019.101684
    Deanonymizing Tor hidden service users through Bitcoin transactions analysis >Published: 01 February 2020 Publication History
    ACM Digital Library
    Abstract
    With the rapid increase of threats on the Internet, people are continuously seeking
    privacy and anonymity. Services such as Bitcoin and Tor were introduced to provide
    anonymity for online transactions and Web browsing. Due to its pseudonymity model,
    Bitcoin lacks retroactive operational security, which means historical pieces of
    information could be used to identify a certain user. By exploiting publicly available
    information, we show how relying on Bitcoin for payments on Tor hidden services could
    lead to deanonymization of these services¢ users. Such linking is possible by finding
    at least one past transaction in the Blockchain that involves their publicly declared
    Bitcoin addresses.
    To demonstrate the consequences of this deanonymization approach, we carried out a
    real-world experiment simulating a passive, limited adversary. We crawled 1.5K hidden
    services and collected 88 unique and active Bitcoin addresses. We then crawled 5B
    tweets and 1M BitcoinTalk forum pages and collected 4.2K and 41K unique Bitcoin
    addresses, respectively. Each user address was associated with an online identity along
    with its public profile information. By analyzing the transactions in the Blockchain,
    we were able to link 125 unique users to 20 hidden services, including sensitive ones,
    such as The Pirate Bay and Silk Road. We also analyzed two case studies in detail to
    demonstrate the implications of the information leakage on users anonymity. In
    particular, we confirm that Bitcoin addresses should be considered exploitable, as they
    can be used to deanonymize users retroactively. This is especially important for Tor
    hidden service users who actively seek and expect privacy and anonymity. >References
    ...
    https://dl.acm.org/doi/abs/10.1145/3589335.3651487
    Deanonymizing Transactions Originating from Monero Tor Hidden Service Nodes >Published: 13 May 2024 Publication History
    Get Access
    WWW '24: Companion Proceedings of the ACM Web Conference 2024
    Deanonymizing Transactions Originating from Monero Tor Hidden Service Nodes >Pages 678 - 681
    ACM Digital Library
    Abstract
    Monero is a privacy-focused cryptocurrency that incorporates anonymity networks (such
    as Tor and I2P) and deploys the Dandelion++ protocol to prevent malicious attackers
    from linking transactions with their source IPs. However, this paper highlights a
    vulnerability in Monero's integration of the Tor network, which allows an attacker to
    successfully deanonymize transactions originating from Monero Tor hidden service nodes
    at the network-layer level.
    Our approach involves injecting malicious Monero Tor hidden service nodes into the
    Monero P2P network to correlate the onion addresses of incoming Monero Tor hidden
    service peers with their originating transactions. And by sending a signal watermark
    embedded with the onion address to the Tor circuit, we establish a correlation between
    the onion address and IP address of a Monero Tor hidden service node. Ultimately, we
    correlate transactions and IPs of Monero Tor hidden service nodes.
    Through experimentation on the Monero testnet, we provide empirical evidence of the
    effectiveness of our approach in successfully deanonymizing transactions originating
    from Monero Tor hidden service nodes.
    Supplemental Material
    MP4 File
    Supplemental video
    Download 7.23 MB
    https://dl.acm.org/doi/suppl/10.1145/3589335.3651487/suppl_file/shp4046.mp4
    References
    ...
    [end quoted excerpts]

    found this while searching bitmessage, monero, tor, backdoor, etc . . .

    (using Tor Browser 14.5.4) https://cybersecurity88.com/news/new-backdoor-malware-exploits-pybitmessage-p2p-protocol/
    New backdoor malware exploits PyBitmessage P2P protocol
    May 22, 2025
    The AhnLab Security Intelligence Center (ASEC) has discovered a new backdoor >malware strain bundled with a Monero cryptocurrency miner. Unlike other malware
    that uses HTTP or IP-based communication, this malware uses PyBitmessage library
    to communicate over a peer-to-peer (P2P) network, encrypting its traffic between
    endpoints.
    What is PyBitmessage?
    Bitmessage is a protocol designed for anonymity and decentralization, preventing
    interception and masking both sender and receiver identities. The attackers >exploit PyBitmessage, a Python-based implementation of this protocol, to exchange
    encrypted packets disguised as regular network traffic to evade detection. >Attack Chain
    The Monero miner and backdoor are embedded in the top-level executable’s >resources and encrypted using XOR. Upon execution, the malware decrypts these >components and stores three key files
    config.json
    WinRing0x64.sys
    idle_maintenance.exe
    in the %Temp%\3048491484896530841649 directory.
    Monero is commonly used in such attacks due to its strong privacy features, >allowing attackers to profit anonymously by hijacking system resources for mining.
    Upon launch, the PowerShell-based backdoor installs PyBitmessage to handle POST
    requests via localhost port 8442. It attempts to download PyBitmessage from its
    GitHub release page, or from a Russian-based file hosting service likely linked
    to the attacker.
    PowerShell script
    The PyBitmessage package, bundled via PyInstaller, creates .pyc, .pyd, and >related module files in the %TEMP%\_MEI~~ directory upon execution.
    Among them is QtGui4.dll, which appears to be patched (with a specific offset
    zeroed out) to disable its standard functionality, potentially as an evasion >technique.
    After setup, the malware initializes multiple files and directories needed for
    operation and waits for further instructions from the attacker. These >instructions are delivered as encrypted messages, saved locally, and executed as
    PowerShell scripts from a hidden path (.\s).
    The Bottom Line
    Evidence points to Russian or Russian-speaking threat actors based on backup >file hosting site’s Russian language interface and geographic hosting location.
    This malware demonstrates how cybercriminals are weaponizing legitimate privacy
    tools, creating detection challenges that require fundamental shifts in security
    monitoring approaches from traditional signature-based to behavioral analysis
    methods.
    Source: hxxps[://]asec[.]ahnlab[.]com/en/88109/
    ^^^^^ ^^^^ ^^^^^^ ^^^ ^^ ^^^^^
    Follow cybersecurity88 on X and LinkedIn for the latest cybersecurity news >Did you like the post? Share it in your media
    ...
    https://asec.ahnlab.com/en/88109/
    PyBitmessage Backdoor Malware Installed with CoinMiner
    May 20 2025
    ...
    [end quoted text]

    i'm only an amateur user of anonymous remailers . . . but for those that work
    inside the system, it looks very much like spy vs. spy, good guys v good guys


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