What do you mean by Indicators of Compromise (IoCs). Explain with an example..

Indicators of Compromise (IoCs) refer to forensic data and artifacts that suggest that a network or system has been breached or compromised. They serve as clues that help security teams identify potential malicious activities, assess the scope of an attack, and take appropriate remediation measures. These indicators can be in the form of files, patterns, or activities that deviate from the normal operation of a network or system, signaling that an unauthorized or malicious event has occurred.

IoCs are critical for detecting, investigating, and mitigating cyber threats. They are used by cybersecurity professionals to recognize and respond to various forms of cyberattacks, such as malware infections, data breaches, and ransomware. IoCs can provide actionable intelligence for cybersecurity teams to prevent further damage, recover compromised systems, and improve future defenses.

### Types of Indicators of Compromise (IoCs)

IoCs can be broadly categorized into several types based on the nature of the information they provide. Some of the common categories include:

1. File Hashes:
   A file hash is a unique cryptographic fingerprint generated from a file's content. File hashes are often used to verify whether a file is legitimate or malicious. For example, a hash value of a known malware file can be used as an IoC to detect and block the file on a system or network.

2. IP Addresses:
   Malicious actors often use specific IP addresses to carry out their attacks, such as sending malware or executing Distributed Denial of Service (DDoS) attacks. If an organization detects an unfamiliar or blacklisted IP address communicating with their system, it could indicate a cyberattack. An IoC in the form of an IP address helps organizations identify malicious communication channels and block these addresses to mitigate risks.

3. Domain Names:
   Similar to IP addresses, cybercriminals often use specific domain names to establish communication with their command-and-control servers or to facilitate phishing attacks. Monitoring domain names associated with known threats allows cybersecurity teams to quickly block malicious domains and prevent further intrusion attempts.

4. URLs (Uniform Resource Locators):
   URLs can also act as IoCs, especially when they are ________ ______ _______ ____ _____ ______ _____ ________ __________.
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