In cybersecurity, a race condition vulnerability can be exploited by an attacker who influences the timing of events to bypass a security control. For example, an attacker might try to use a gift card twice by sending two simultaneous requests before the system can update the balance.

A cipher, or cypher, is simply the set of rules or the algorithm that defines how encryption and decryption are performed. Examples include the AES cipher and the Caesar cipher.

The Diffie-Hellman key exchange is a fundamental cryptographic protocol that solves the problem of sharing a secret key for symmetric encryption. It allows two parties, who have no prior knowledge of each other, to jointly establish a shared secret over a network that may be monitored by an attacker.

A DPO is a mandatory role for certain organizations under GDPR. They are an independent expert who is responsible for monitoring internal compliance, advising on data protection obligations, and acting as a point of contact for data subjects and supervisory authorities.

An insider threat is a security risk that comes from someone who has authorized access to an organization's systems and data. This can be a malicious act (e.g., a disgruntled employee stealing data) or an unintentional one (e.g., an employee falling for a phishing scam).

The GDPR is a landmark regulation from the European Union that was put into effect in May 2018. It is designed to protect the personal data and privacy of EU citizens and has had a major impact on data handling practices worldwide.

DNS hijacking involves compromising a domain's DNS settings to point the domain name (e.g., `www.mybank.com`) to a different, malicious IP address. This is a powerful attack because users who type the correct URL will still be sent to the attacker's fake site.

This technique, known as ARP spoofing or ARP poisoning, is a common method for initiating a Man-in-the-Middle attack on a local area network (LAN). By corrupting the ARP cache of other devices, the attacker tricks them into sending network traffic to the attacker's machine instead of the legitimate gateway or destination.

Access control is a security technique that regulates who or what can view or use resources in a computing environment.

Phishing is a social engineering attack where a hacker attempts to acquire sensitive information by masquerading as a trustworthy entity.