Spear Phishing: What Is It & How to Prevent It

Spear phishing is a more targeted and sophisticated form of phishing. Defending against it requires both employee awareness and strong organizational safeguards.

A typical spear phishing attack involves a personalized, fraudulent email — often including a malicious attachment or a request for sensitive information. The attacker aims to trick the recipient into opening the attachment or responding with confidential data, increasing the likelihood of a successful breach.

How a Spear Phishing Attack Works

Spear phishing is a highly targeted attack that first starts with an in-depth research phase. Attackers will spend time gathering information to use in the attack against the target company, such as stolen documents, email addresses, branded logos, and even details regarding the company structure.

Once this information is collected it is used to carefully craft a phishing email attempt to a specific target within the company. For instance, attackers can use the stolen information listed above to create an urgent sounding email coming from the head of the IT department. This email could urge readers to click a link and update their password.

Since the attackers spent the time to identify who the head of IT is, they can craft a much more believable phishing email to trick the recipient. Oftentimes these phishing emails are even more targeted to specific individuals inside an organization. Bad actors may create fake invoices and target the accounting department, knowing that they work with invoices daily.

Spear phishing attacks can be designed to steal company information, fraudulently wire money, or even encrypted company assets and hold them hostage. Payloads in phishing emails are usually hidden inside of innocuous looking links, or legitimate file attachments like PDFs or Microsoft Word files.

Links can either redirect to a malicious site where a PC gets infected, or more commonly to a fake cloned webpage that looks nearly identical to the real thing. When a user enters their information to login on this fake site, attackers can steal those credentials and then use them on the real platform.

Phishing email attachments work to steal the same information but do so by hiding a malicious payload that installs spyware on the target machine. Attachments are even more dangerous because they open the entire network to a host of different attacks, where a backdoor can be planted by an attacker for future access.

How to Identify Spear Phishing

Spear phishing exploits trust within an organization in a highly calculated way, making it one of the hardest attacks for untrained users to detect. Implementing an automated phishing response system can help stop these threats before they ever reach the inbox. Here are a few ways to identify a spear phishing email:

• Check the sender carefully. Attackers often use names and domains that closely resemble trusted sources, with subtle misspellings that are easy to overlook.
• Watch for urgency or pressure. Emails that create a sense of panic or demand immediate action are a common tactic to bypass critical thinking.
• Be cautious with links. Malicious links can appear legitimate. Verify the sender and hover over links to inspect the actual destination before clicking.
• Verify through another channel. If something seems off and IT review isn’t available, contact the sender using a known, trusted phone number, not the one provided in the email.

Spear Phishing vs. Phishing — What’s the Difference?

While the goal of any phishing attack is the same — stealing sensitive information — the methods used can differ significantly.

Regular phishing (often called email phishing) takes a broad, “shotgun” approach. Attackers send the same fraudulent message to thousands of recipients, hoping a small percentage will fall for the scam. It’s a numbers game, casting a wide net to capture credentials.

By contrast, spear phishing is highly targeted. Attackers focus on a specific individual or organization, using research to craft convincing, personalized messages that appear legitimate. The goal is to build trust and increase the likelihood of success.

Because these attacks require more time and effort, threat actors typically focus on organizations they consider valuable, such as large enterprises or rapidly growing mid-sized companies. However, no organization is immune to this type of attack.

Common Phishing Variations

There are several variations of spear phishing, often named for the tactics or communication channels used to target victims. Let’s take a look at some of the most common types.

Whaling

Whaling takes the targeted nature of spear phishing and refines it even further to impersonate a CEO or senior staff member within an organization. It exploits the power dynamics between authority figures in a company to trick and pressure other staff members into clicking on a malicious link, wiring funds, sending sensitive information, or opening a virus laden attachment.

Clone Phishing

This is an especially devious type of phishing attack because it can use real previously sent email correspondence to look like a real email. Attackers either recreate or steal previously sent emails from the sending party and then resend them from another account that looks similar to the real sender.

The new scam email will contain the old correspondence, but with an updated attachment that is malicious. The scammer may note that the attachment has been updated, or the first one was not correct.

How do I Report a Phishing Email?

If you’ve received a phishing email — or accidentally shared information — there are a few simple steps you can take to report it:

• Forward the email to the Anti-Phishing Working Group at [email protected].
• If the message was sent via text, forward it to 7726 (SPAM).
• You can also report the incident to the Federal Trade Commission by visiting ftc.gov/complaint.

Reporting phishing attempts helps authorities track and disrupt these attacks, potentially preventing others from becoming victims.

Protecting Against Spear Phishing Emails

Defending against spear phishing requires a consistent blend of employee education and layered security controls. Together, these measures help prevent attacks while reducing overall risk. Solutions like Fortra Cloud Email Protection provide an out-of-the-box approach to email security, using artificial intelligence to identify, prioritize, and neutralize threats before they reach users.

Here are a few steps you can take to strengthen your defenses:

• Keep staff informed and trained. Ongoing security awareness programs help employees recognize and report suspicious messages, reinforcing human vigilance as a critical layer of defense.
• Enable two-factor authentication (2FA). Adding a second verification step—such as a mobile device or authenticator app—helps protect accounts even if credentials are compromised.
• Flag external emails. Configure your email system to label messages originating outside the organization, giving users a clear visual cue to treat unexpected requests with caution.