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A “resonant break attack” exploits a cryptographic phenomenon—changing a transaction identifier (TXID) before it’s confirmed. The attacker introduces minor changes to the witness data or signature encoding without compromising the validity of the transaction itself. As a result, the financial flow begins to “resonate” between different identifiers, causing payment accounting failures, the possibility of double-spending, and the destruction of the reliability of the transaction monitoring system...

“Spectral Fountain Attack ” exploits the predictability of a deterministic random number generator to continuously and easily extract cryptographic secrets. Within the target system, where the PRNG is seeded with a fixed value, an attacker can recover private keys and any other secrets as easily as if the keys were “sparkling” from a single, predictable source. The name combines the sense of a “continuous stream” of secrets with a stylized, scientific-mystical aesthetic, making the attack noticeable and memorable among security professionals...

A “Crystal Key” attack exploits the fact that a pseudorandom generator is deterministic and predictable in advance. The generator operates as a “transparent crystal”—the sequence of random numbers becomes visible to anyone with knowledge of the initialization scheme. The attacker reproduces the entire chain, calculates private keys, and intercepts the victim’s funds or signatures, as if peering through a glass window into the secret key generation processes. The attack perfectly illustrates a fundamental...

NullStream Attack is a cryptographic attack in which a malicious actor easily turns the Poly1305 message authentication mechanism into a transparent channel for injecting fake data. The critical vulnerability Poly1305, which involves the use of a null or predictable key, can disrupt authentication at all levels of Bitcoin cryptocurrency exchange protocols. This attack is scientifically classified as universal MAC forgery under key misuse. While no direct CVE number has been identified for this vulnerability, the typical vulnerability categories are CWE-320 and CWE-330...

A “Predictor Flash Attack” is a technique for extracting private or sensitive data through the analysis of deterministic pseudorandom number sequences used in target software. The attacker observes memory access patterns resulting from predictable “random” values ​​and uses this information to reconstruct hidden data, system operation, or key elements. This attack is particularly dangerous in networked and distributed environments, where the use of repeating seeds or generation patterns can lead to effective side-channel analysis and accelerated disclosure of cryptographic secrets...

A Signature Hydra Attack is a method in which an attacker creates a stream of “mutant” ECDSA signatures, each of which appears valid on the surface but conceals anomalies and flaws internally through missing or incorrectly validated parameters (e.g., zero r/s). Each such request—like another “head” of the Hydra—increases the number of false transactions in the blockchain, which can completely disrupt the node infrastructure and destabilize the overall reliability of the network. keyhunters+1 The critical...

A ” Crystalline Keystorm Attack ” is a class of attacks in which the use of a predictable random number generator with a known seed results in complete predictability of all derived cryptographic keys and secrets. The entire system becomes transparent to the attacker, like a crystal, and is subject to a cascading compromise at all security levels. cqr+2 The attack exploits a random number generator with a fixed seed, making the entire sequence completely predictable to an attacker. Once the attacker...

In this attack, the attacker deliberately changes the data representation format in the filter, using the same input data but writing it in different endian formats (little-endian and big-endian) in the same buffer. As a result, the filter begins to behave unpredictably, producing false negatives and positives: developer.bitcoin+1 The Endian Mirage Attack in the Bitcoin Core ecosystem and SPV clients is not only a technical bug but also a fundamental security threat that can lead to deanonymization, loss of privacy, denial-of-service attacks, and compromise of user keys...

An “Artery Bleed Attack” is an elegant and dangerous technique in which an attacker initiates controlled memory corruption of a Bitcoin node, similar to how arterial bleeding causes the rapid loss of vital information. During the attack, the attacker leaks sensitive data (such as private keys) by exploiting weaknesses in memory clearing after cryptographic operations or by flooding the system with dummy blocks and headers, which causes a sudden “spill” of the entire RAM contents. coinspect+1 RAMnesia...

A critical SIGHASH_SINGLE vulnerability in the Bitcoin protocol opens the way to a type of attack Phantom Signature Attack: SIGHASH_SINGLE Vulnerability (CVE-2025-29774) Represents a fundamental security threat to the world’s largest cryptocurrency. An implementation flaw that allows signatures to be generated for a fixed hash of “1” instead of a failure is equivalent to a complete compromise of the private key and leads to the uncontrolled withdrawal of funds by an attacker without the owner’s knowledge...

The RingSide Replay Attack (Milk Sad CVE-2023-39910) is a textbook example of how flaws in the entropy source can have catastrophic consequences for Bitcoin and other cryptocurrencies. This attack, known as the “Entropy Weakness Exploit in Key Generation” or “PRNG Seed Recovery Attack,” illustrates scientifically how a fundamental flaw in cryptoengineering can undermine trust in entire classes of wallets and threaten all user assets for years to come. cve+4 The CVE-2023-39910 vulnerability clearly...

KEYHUNTER (Scalar Poison / Poisonous Scalar Infection) SCALAR VENOM ATTACK is a new class of cryptographic attack aimed at extracting Bitcoin private keys by exploiting memory management vulnerabilities in the libbitcoin-system library. wikipedia+2 The Sensitive Memory Leak Attack (CVE-2023-39910, CVE-2025-8217) class of attacks requires every developer to critically evaluate their handling of sensitive data. Bitcoin and any cryptocurrency are vulnerable to such attacks. Only a competent security...