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Code injections can occur on any type of program running with an interpreter. Doing this is trivial to most, and one of the primary reasons why server software is kept away from users. An example of how you can see code injection first-hand is to use your browser's developer tools.
Ransomware attacks are typically carried out using a Trojan, entering a system through, for example, a malicious attachment, an embedded link in a phishing email, or a vulnerability in a network service. The program then runs a payload, which locks the system in some fashion, or claims to lock the system but does not (e.g., a scareware program).
An example layout of a call stack. The subroutine DrawLine has been called by DrawSquare.Note that the stack is growing upwards in this diagram. Return-oriented programming is an advanced version of a stack smashing attack.
Ransomware prevents a user from accessing their files until a ransom is paid. There are two variations of ransomware, being crypto ransomware and locker ransomware. [49] Locker ransomware just locks down a computer system without encrypting its contents, whereas crypto ransomware locks down a system and encrypts its contents.
An example of a virus that informs the owner of the infected machine to pay a ransom is the virus nicknamed Tro_Ransom.A. [9] This virus asks the owner of the infected machine to send $10.99 to a given account through Western Union. Virus.Win32.Gpcode.ag is a classic cryptovirus. [10]
Ransomware as a service (RaaS) is a cybercrime business model where ransomware operators write software and affiliates pay to launch attacks using said software. [1] Affiliates do not need to have technical skills of their own but rely on the technical skills of the operators.
Hidden Tear is the first open-source ransomware trojan that targets computers running Microsoft Windows [1] The original sample was posted in August 2015 to GitHub. [2]When Hidden Tear is activated, it encrypts certain types of files using a symmetric AES algorithm, then sends the symmetric key to the malware's control servers. [3]
A logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met. For example, a programmer may hide a piece of code that starts deleting files (such as a salary database trigger), should they ever be terminated from the company.