An Employee Clicked on a Phishing Email Link: What to Do Immediately

It happens fast, and it happens more often than most businesses think.

Phishing isn’t a rare edge case anymore. By the end of 2025, it was responsible for roughly 36–40% of all successful cyber intrusions, with projections pushing that beyond 42% globally in 2026.

And this isn’t just a large enterprise problem. Nearly 48% of phishing victims are SMBs, teams that often don’t expect to be primary targets.

The impact isn’t theoretical either. The average cost of a phishing incident has climbed to around $4.9 million per organization. (Source: Medium)

Now zoom in.

Someone on your team opens what looks like a routine email, an invoice, a password reset, or a shipping notification and clicks the link before anything feels wrong. By the time the page looks off, or nothing loads at all, the question is already urgent: what do we do right now?

This isn’t a drill scenario. This is a real incident, and the first 30 minutes matter more than most businesses realize.

Here’s exactly how to respond.

The Click Already Happened, Your Window for Damage Control Is Open

The instinct after a phishing click is often to wait and see, close the tab, hope nothing happened, move on. That instinct is expensive. What happens when you click on a phishing link depends heavily on what type of phishing attempt it was, but in the best-case scenario where nothing visibly happened, something still may have happened. Credential harvesting pages don’t always look broken. Malware doesn’t always announce itself. Waiting closes your response window.

What actually happens in the background when someone clicks a phishing link?

Depending on the link type, potential outcomes include:

The point: the absence of an obvious consequence is not confirmation that nothing happened.

First 5 Minutes

The employee who clicked needs to stop what they’re doing and escalate immediately, not after finishing the task they were on, not after Googling whether it’s fine. Right now. Here’s the immediate priority sequence:

1. Disconnect the device from the network (unplug ethernet or disable Wi-Fi) – This cuts off any active communication between malware and an external server
2. Do not restart or shut down the machine – Live memory forensics require the machine to stay on; restarting can destroy evidence
3. Alert IT or your managed service provider – Because the clock is running
4. Document what happened – URL clicked, time, what the employee did after (entered credentials? downloaded a file?)

And if you’re confused/stressed out or feel rushed and don’t know what to do immediately to stop it from spreading, our MSP team will guide you through the next steps.

The Response Sequence After You Clicked on a Phishing Link

This isn’t a checklist to hand to an employee and walk away from. This is a coordinated response that requires IT involvement from minute one. Here’s how it should unfold.

Isolate Immediately

Network isolation is the single most important step in the first window. If the clicked link triggered a payload, isolation stops lateral movement, malware spreading from one machine to others on the same network. Don’t wait for confirmation that something is wrong. Isolate first, investigate second.

Credential Reset Protocol

If there’s any chance the employee entered credentials on the landing page, or if the phishing email spoofed a tool your team uses (Microsoft 365, Google Workspace, a banking portal), treat those credentials as compromised immediately.

Reset priority order:

1. Email account credentials
2. Any shared or admin-level accounts
3. Business banking or financial portals
4. VPN and remote access credentials
5. Any SSO-connected platforms

If your business uses single sign-on, one compromised credential can cascade. Reset and enable MFA on every account that credential touched before moving to the next step.

Forensic Review

Your IT team or MSP should now take over the affected machine for forensic review. This includes:

• Examining browser history, downloads, and cached files from the session
• Checking for persistence mechanisms (scheduled tasks, registry entries, background processes)
• Reviewing network logs for outbound communication attempts

This step isn’t optional. Even if nothing appears wrong, confirmation that the device is clean matters, both for security and for any compliance requirements your business operates under.

If you’ve been phished, how do you know whether credentials were actually stolen or just tested?

The honest answer: you often can’t know without a log review. Phishing pages are designed to be invisible in their success. A credential entered on a spoofed login page gives the attacker exactly what they need, and the user is usually redirected to the real login page immediately after, so it never felt like anything went wrong.

What Do You Do Beyond the First Hour of a Phishing Attack

Immediate containment handles the acute risk. But a phishing incident response doesn’t end when the machine is isolated and credentials are reset. There’s a second phase that determines whether this becomes a one-time event or a recurring problem.

Tenant-Level Review

If your business runs Microsoft 365 or Google Workspace, contact our tech support provider, we check your accounts for:

• Mail forwarding rules set up without the employee’s knowledge
• OAuth app permissions granted during the session
• Login history for unfamiliar IP addresses or locations
• Any sent items or calendar invites the employee didn’t create

Attackers who successfully harvest credentials often set up forwarding rules in the background before you’ve noticed anything. This is quiet, persistent access, and it doesn’t require the employee to do anything else.

Notify the Right People

Depending on your industry and the nature of the data at risk, a phishing incident may trigger notification obligations. This includes:

• Cyber insurance carrier – most policies require prompt notification to preserve coverage
• Legal counsel – especially if client or patient data was accessible on the compromised account
• Affected clients – if there’s any evidence that a compromised account was used to impersonate your business in outbound communication

Delay in notification is one of the most common mistakes businesses make post-incident. It rarely makes the situation better and sometimes creates liability where there wasn’t any.

Targeted Training, Not Generic Security Awareness

After a phishing incident, the standard response is to send the whole company a security awareness video. That’s understandable, but it’s not sufficient. The employee who clicked needs a specific debrief: what made this email convincing, what the warning signs were in retrospect, and what the correct escalation path looks like. Generic training doesn’t address the exact scenario that just happened.

If your team’s daily tech environment is already creating friction, slow tools, constant workarounds, the kind of problems covered in what daily tech issues actually cost your business, that stress is a phishing risk multiplier. People working fast under frustration click first and think second.

The Longer View of What to Do If You’ve Been Phished

One phishing click is an incident. A pattern of phishing attempts against your business is targeting, and it means something about your domain, your industry, or your email posture has made you a repeated target. 

Signs you’re being targeted rather than randomly hit:

• Multiple employees receiving similar emails within a short window
• Phishing emails that reference real internal projects, names, or vendors
• Spoofed sender addresses that closely matches your own domain or a known vendor

If any of these apply, the response goes beyond incident containment. It includes domain authentication review (SPF, DKIM, DMARC), email filtering configuration, and possibly dark web monitoring for previously leaked credentials.

In Conclusion

The moment after an employee clicks a phishing link is not the time to figure out your response plan. Isolate the device, reset credentials, engage IT, and review your tenant, in that order, in that urgency. What happens if you click on a phishing link depends almost entirely on how fast your business responds and how prepared your environment is to contain the damage.

CTS Complete helps businesses build the response structure before they need it, because the cost of having no plan shows up in the worst possible moment. If this incident has you rethinking your broader IT environment, that’s the right instinct. The place to start is understanding what else might be quietly degrading, how internet slowdowns and tech friction accumulate is a good starting point for that conversation.