APTs aim at "Data Exfiltration," which involves stealing data over an extended period, focusing on long-term gains, not causing immediate harm.

IPsec (Internet Protocol Security) is designed to secure network communication, ensuring data integrity and confidentiality. It's often used to create VPNs for secure network connections.

Data Loss Prevention (DLP) solutions often employ Machine Learning algorithms to identify and classify sensitive data. These algorithms learn from historical data and predefined criteria to recognize patterns associated with sensitive information, helping prevent data leaks and breaches.

Antivirus software is commonly used to scan a computer system for known malware signatures. It compares files and activities on the computer to a database of known malware signatures to detect and remove malicious software.

"Stateful inspection" in firewalls refers to the method of tracking the state of active connections and making decisions based on the context of the traffic, enhancing security by understanding the state of network connections.

Defense-in-Depth is a security strategy that advocates implementing multiple layers of security measures. This approach helps to provide redundancy and ensure that even if one layer is breached, other layers can still protect the system. Single Sign-On, Two-Factor Authentication, and Encryption are important security concepts but not the same as Defense-in-Depth.

When an IDS generates an alert for non-malicious activity, it's called a 'False Positive,' indicating a potential security concern that is, in fact, benign.

This technique is called "baiting." It involves leaving a device (in this case, a malware-infected USB drive) in a location where someone may find it and plug it into a computer out of curiosity. Once connected, the malware can infect the victim's computer.

Ethical hackers should ideally have Standard User permissions. Giving them full access could lead to unintended consequences, while having no access impedes their work. Standard User access provides a balance of access for testing without causing harm.

The GDPR (General Data Protection Regulation) primarily pertains to the protection of personal data for citizens of the European Union. It is a comprehensive data protection law that sets strict standards for how organizations handle personal data of EU residents, regardless of where the organization is based.