Spoofing typically involves manipulating the email header to falsify the sender's address. Cybercriminals use various techniques to achieve this, including:
Sender Policy Framework (SPF) Evasion: Attackers may exploit weaknesses in SPF records to send spoofed emails. DomainKeys Identified Mail (DKIM) Manipulation: Hackers may alter the DKIM signature to bypass security checks. Open Relays: Utilizing mail servers that are misconfigured to send emails on behalf of any sender.