To answer this question, you need to understand what keyloggers are. Keyloggers are malicious tools or software programs that are used to log and record keystrokes on a computer or device without the user's knowledge or consent. These keystrokes can include sensitive information such as usernames, passwords, credit card details, and other personal or financial data.
Let's go through each option to understand why it is correct or incorrect:
Option A) make impressions for creation of duplicate keys - This option is incorrect because keyloggers are not used for making impressions or creating duplicate keys. Keyloggers focus on logging and recording keystrokes.
Option B) log and record keystrokes to steal data - This option is correct because keyloggers are primarily used to log and record keystrokes with the intention of stealing data. This data can then be used for various malicious purposes, such as identity theft, financial fraud, or unauthorized access to accounts.
Option C) guess passwords - This option is incorrect because keyloggers do not guess passwords. Instead, they capture the actual keystrokes entered by the user, including passwords, allowing the attacker to obtain the actual password without having to guess it.
Option D) All of the options - This option is incorrect because not all the options listed are correct. While option B is correct, options A and C are incorrect.
The correct answer is B) log and record keystrokes to steal data. This option is correct because it accurately describes the primary purpose of keyloggers, which is to capture keystrokes and steal sensitive data.