What techniques do attackers use to bypass email security?

Attackers often use a variety of sophisticated techniques to bypass email security, with social engineering being a primary method. Social engineering manipulates individuals into divulging confidential information or performing actions that compromise security. This can involve phishing scams where attackers impersonate trusted sources or colleagues to gain sensitive data.

Exploiting known vulnerabilities refers to taking advantage of weaknesses in software or email systems that have not been patched or properly secured. Attackers can craft messages that exploit these vulnerabilities, potentially leading to malware delivery or unauthorized access.

Trusted sender impersonation involves attackers crafting emails that appear to come from legitimate individuals or organizations, tricking recipients into believing the message is safe. This technique leverages the trust that users place in known contacts, making it easier for attackers to execute malicious actions such as instructing users to click on links or provide sensitive information.

The other options mentioned, such as using complex passwords and implementing multi-factor authentication, are security measures aimed at strengthening defenses against unauthorized access but do not represent techniques attackers leverage to bypass security. Similarly, employing strong encryption techniques enhances security but does not facilitate bypassing existing security measures.