Hacking
Hacking is the unauthorized access or manipulation of computer systems, networks, or data, often for malicious purposes.
Hacking is the unauthorized access or manipulation of computer systems, networks, or data, often for malicious purposes.
Hal Finney was a pioneering computer scientist and cryptographer, known for his early contributions to Bitcoin and his work on the PGP encryption software.
Hard cap is the maximum funds a crypto project will raise in an ICO; once hit, token sales stop, creating scarcity and guiding expectations.
Learn what a hard peg is, how it works, its core features, and the trade-offs versus a soft peg. See where it’s used and the key risks to consider.
A hardware security module (HSM) is a tamper-resistant device for managing cryptographic keys and operations for industry, finance, PKI, and cloud.
Hardware wallet: a physical device that stores cryptocurrency private keys offline, keeping them in cold storage and safeguarding assets from hacks.
Hash: a cryptographic hash function that transforms data into a fixed-length digest used for data integrity, digital signatures, and blockchains.
A hash function is a one-way algorithm that maps any input to a fixed-length value for integrity checks, password hashing, digital signatures, hash tables.
Hash rate is the computing power used by Bitcoin miners, measured in hashes per second, driving security, mining difficulty, and profitability.
Haskell programming language: a statically typed, purely functional language with lazy evaluation and type inference for concise, predictable code.
High availability (HA) is designing IT systems to stay online via redundancy, load balancing, and failover, minimizing downtime and ensuring continuity.
A higher low is a technical analysis pattern where a price low sits above the previous low. See what it signals about trend direction with examples.
High risk merchant account: a payment processing account for businesses with chargeback or industry risk, enabling credit card payments with risk controls.
High throughput is the rapid processing of large data or sample volumes, enabling HTS in drug discovery, genomic analysis, and high-speed data networks.
HODL means holding cryptocurrency long term despite volatility, a term from a 2013 typo. Includes origins, strategy, and investor psychology.
Horizontal vs vertical scaling: scaling out adds servers to distribute load, while scaling up upgrades one machine. Covers benefits, limits, and use cases.
Hosted Payment Page: a secure PSP page customers are redirected to at checkout, cutting PCI DSS scope and enabling cards, wallets, and recurring payments.
Hot failover vs cold failover define disaster recovery modes: hot syncs a live standby for instant switch; cold needs manual start with downtime.
Hot storage refers to data storage systems that provide quick and frequent access to data, typically used for active or frequently accessed information.
The Howey test determines when a deal is an investment contract under U.S. securities law, its four prongs and application to crypto assets.
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