Terms that come up in our discussions explained without the condescension.
Remote Access Trojan. Malware that silently gives an attacker full control of your device — files, camera, keystrokes, clipboard — without you ever knowing.
Common Vulnerabilities and Exposures. A global registry that assigns a unique ID to every publicly known security flaw so researchers, vendors, and engineers can all talk about it precisely.
Insecure Direct Object Reference. A web vulnerability where changing a number in the URL gives you access to someone else's data because the server never checks if you're supposed to be there.
Cross-Site Scripting. Planting malicious code in a website that then runs inside every other visitor's browser — stealing sessions, redirecting, or silently sending data out.
Denuvo Anti-Tamper. A DRM layer embedded in PC games that continuously checks the game hasn't been modified, crashing it if tampering is detected.
Hypervisor. Software running below the OS that manages virtual machines — because it sits deeper than the OS itself, it controls what the OS sees and can intercept anything passing through.
System Clipboard — Unprotected. On Windows, anything you copy (Ctrl+C) sits in a shared buffer that any app with basic permissions can silently read at any time — no warning, no prompt.
Seed Phrase. A sequence of 12–24 words that fully reconstruct your crypto wallet on any device — whoever has these words owns everything in the wallet, permanently.
Ransomware. Malware that encrypts all your files — making them completely unreadable — then demands payment for the decryption key, with no guarantee you ever get it.
Hardcoded API Key. A secret credential baked directly into an app's code — anyone who disassembles the app can read it and use it to impersonate the service it belongs to.
Brain-Computer Interface. A device that reads electrical signals directly from neurons and translates them into digital commands — or sends signals back — bypassing all physical movement.
Vulnerability. A flaw in code, configuration, or design that allows someone to make a system do something it wasn't supposed to — read private data, crash, or hand over control.
Low-Level. Code written close to the hardware — dealing with memory addresses, CPU registers, and raw bytes directly instead of letting a language or framework handle it for you. More control, more responsibility, fewer safety nets.
Reverse Engineering. Analyzing a compiled program — one you only have the final binary of — to reconstruct its logic, find vulnerabilities, or understand its behavior. Done using disassemblers and debuggers that translate machine code back into something human-readable.
Cracking. Modifying or patching a program to remove or bypass its copy protection, license validation, or DRM — making it run without the authentication it was designed to require.
Torrent / BitTorrent. A file transfer protocol where instead of downloading from one central server, you pull pieces from dozens of other users simultaneously — and share pieces back as you receive them. No single point of failure, scales the more people use it.
Stack. A structured region of memory where the program keeps track of what function is running, what called it, and what local variables exist — automatically grows and shrinks as functions are called and returned.
Buffer. A finite block of memory pre-allocated to hold incoming data — a username field, a packet, a file chunk. The size is fixed at creation; what happens when you put more in than it can hold is up to the programmer. Often, nothing good.
Registers. The smallest and fastest storage a computer has — a handful of named slots (like rax, rsp, rip) that live inside the CPU itself. Every calculation, memory read, and function call flows through them. The instruction pointer register (rip) is the one attackers most want to control — it determines what executes next.
Buffer Overflow. When a program writes more data into a buffer than it was sized for, the excess spills into adjacent memory — overwriting other variables, return addresses, or control data. If an attacker controls what spills over, they can redirect what the program does next.
Shellcode. A small, self-contained blob of machine code — no operating system, no libraries, just raw CPU instructions — crafted to be injected into a vulnerable process and executed. Historically named for its goal of spawning a shell, giving the attacker a command prompt inside the target.
ROP Chain. An advanced exploit technique where instead of injecting shellcode, the attacker strings together tiny existing snippets of the program's own code (called gadgets) — each ending in a ret instruction — to perform arbitrary actions. Bypasses defenses that prevent injected code from running, because nothing foreign is ever executed.
Credential Stuffing. An attack where an adversary takes username/password combinations leaked from one data breach and automatically tries them against other services — exploiting the fact that people reuse passwords across sites. Unlike brute-force, every attempt uses a real, previously valid credential, making it far harder to detect.
Account Cracking. The practice of gaining unauthorized access to online accounts — typically using automated tools, combolists, and checkers. Distinct from software cracking, which targets copy protection. Methods range from credential stuffing with leaked data to password spraying. Cracked accounts are sold, used for fraud, or mined for personal data.
Combolist. A compiled file — often millions of lines — containing email:password or username:password pairs harvested from data breaches, phishing campaigns, or malware logs. Combolists are traded on dark web forums and form the raw input for automated credential stuffing and account cracking operations.
john.doe@email.com:hunter2 — millions of these lines, aggregated from dozens of separate breaches, packaged and distributed as a single file.
Checker. A tool used in account cracking that takes a combolist and fires login requests at a target service in bulk, sorting results into "hits" (valid credentials) and "fails." Checkers use configs — small scripts describing how a site's login flow works — to mimic legitimate traffic. Often paired with proxy pools to evade IP-based rate limiting.
Pwned. Originally a typo of "owned" from early gaming culture — meaning to decisively defeat someone. In security contexts it means your credentials or system have been compromised, typically through a data breach. Popularized as a technical term by Troy Hunt's Have I Been Pwned (HIBP), a service that lets users check whether their email appears in known breach databases.