Subscribe to Hexnode Blog
Get fresh insights, pro tips, and thought starters–only the best of posts for you.
BackWhat is Clone Phishing?
Clone phishing is a phishing attack in which cybercriminals copy a legitimate email that the recipient has previously received, replace its original links or attachments with malicious ones, and resend it while impersonating the original sender. Because the email closely resembles a trusted message, recipients are more likely to click the malicious link, download malware, or disclose sensitive information.
Unlike traditional phishing, this relies on replicating a genuine email to exploit trust. Attackers often imitate communications from vendors, colleagues, or business partners, making the attack more convincing than generic phishing emails.
How does clone phishing work?
Clone phishing typically follows these steps:
- Attackers obtain a legitimate email through compromised accounts, data breaches, or intercepted communications.
- They duplicate the email’s content, branding, attachments, and formatting.
- The original attachment or hyperlink is replaced with a malicious file or fraudulent website.
- The cloned email is sent from a spoofed or compromised account, often claiming the original document has been updated or needs to be resent.
If the recipient interacts with the email, attackers may steal credentials, install malware, or gain unauthorized access to corporate systems.
Clone phishing vs. traditional phishing
| Feature | Clone phishing | Traditional phishing |
| Email content | Copies a legitimate email | Often uses fabricated or templated messages impersonating a trusted entity |
| Trust factor | High because recipients recognize the message | Relies on social engineering and impersonation to gain trust |
| Sender identity | Usually spoofed or compromised | Often spoofed, impersonated, or sent from lookalike domains |
| Primary goal | Deliver malicious links or attachments | Steal credentials, financial data, or distribute malware |
| Detection difficulty | More difficult because the email closely resembles a legitimate message | Often easier to identify when common phishing indicators are present |
Signs of a phishing email
Even convincing clone phishing emails usually leave subtle warning signs. Watch for:
- Unexpected requests to reopen a familiar email or download an “updated” attachment.
- Links that point to domains different from the legitimate organization.
- Slight changes in the sender’s email address or display name.
- Urgent requests to verify credentials or reset passwords.
- Unexpected login prompts after clicking a link.
Organizations should encourage employees to verify suspicious requests through trusted communication channels before taking action.
How Hexnode helps reduce clone phishing risks
Hexnode helps organizations reduce the impact of successful phishing attacks by strengthening endpoint security. With centralized device management, security policy enforcement, app controls, compliance management, and patch management where supported, Hexnode helps secure managed devices and limit unauthorized software.
If a managed device is compromised, Hexnode UEM supports remote actions such as device lock and wipe, while Hexnode XDR enables device isolation on supported Windows and macOS endpoints to help contain threats. Together with email security and identity protection, Hexnode adds another layer to a defense-in-depth security strategy.
Best practices
Organizations can reduce the risk of clone phishing by implementing layered security measures:
- Enable multi-factor authentication (MFA) for business accounts.
- Verify unexpected emails before opening links or attachments.
- Train employees to recognize spoofed domains and suspicious requests.
- Keep endpoints updated with the latest security patches.
- Deploy endpoint management and security controls to enforce device compliance.
- Use advanced email filtering and anti-phishing protection.
FAQs
Clone phishing copies a legitimate email and replaces its links or attachments, whereas spear phishing uses personalized messages created specifically for the target.
Yes. Although it commonly occurs through email, attackers can mimic legitimate messages on collaboration platforms or messaging apps by sharing malicious links or files.