What are Injection Examples?
Injection encompasses various techniques where malicious or unintended data is inserted into a system or process, altering its behavior. This concept spans multiple domains, from medical procedures to software security.
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Medical Injection: This refers to the administering of medication or other substances into the body using a needle and syringe. An example is an intramuscular injection (IM), where medication is injected into a muscle (source: Intramuscular Injection - StatPearls - NCBI Bookshelf). Another example is using a small glass vessel, called an ampule or ampul, to hold a solution for injection (source: provided text).
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SQL Injection: This is a cybersecurity vulnerability where malicious SQL code is inserted into an application's input, enabling unauthorized access to databases. Attackers might try to manipulate database queries to retrieve sensitive information, modify data, or even take control of the database server (sources: What is SQL Injection? Tutorial & Examples | Web Security Academy, SQL Injection, What is SQL Injection | SQLI Attack Example & Prevention Methods ...). An example would be crafting a malicious input that alters a database query to retrieve all user passwords. This is categorized into first-order and second-order SQL injection based on how the user input is handled.
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Code Injection: This is a broader category encompassing techniques where an attacker inserts malicious code into a running process or system. The injected code then executes with the privileges of the targeted process, potentially allowing the attacker to take control of the system (source: Code injection - Wikipedia). Examples include injecting code into a web application to execute arbitrary commands on the server or injecting shellcode into a running process to gain control.
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Dependency Injection (in software development): This is a design pattern in software where dependencies are provided to a class or object rather than the class creating them itself. This enhances code modularity and testability (sources: Dependency injection - .NET | Microsoft Learn, Java Dependency Injection - DI Design Pattern Example Tutorial ...). Example: Instead of a class creating its own database connection, the connection is injected into the class.
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Capital Injection (in finance): This is an investment in a company, providing it with additional capital (source: Capital Injection Definition, With Examples). This could be done through cash, equity, or debt.
General Definition of Injection:
In its most basic form, injection is the act of introducing something into something else. The context determines the specific meaning and implications. (Source: Injection Definition & Meaning - Merriam-Webster) An attacker's attempt to send data to an application in a way that changes the meaning of commands sent to an interpreter is a key aspect of injection attacks (Source: Injection Theory | OWASP Foundation).
