An entry vector is the method, vulnerability, or pathway that cyber attackers exploit to gain unauthorized access to a computer system, network, or application. Entry vectors can include phishing emails, weak passwords, unpatched software, or unsecured remote access points. Identifying and securing potential entry vectors is a key aspect of cybersecurity, as attackers often probe multiple avenues to find the weakest link. By understanding common entry vectors, organizations can better defend against breaches and minimize the risk of unauthorized access or data loss.