The message lands on a Tuesday morning.
It appears to come from the CEO. The name is right, the wording feels authentic, and even the signature looks convincing.
"Hey — can you jump on something for me quickly? I'm stuck in meetings all morning. I need you to take care of a vendor payment. I'll fill you in later."
The new hire hesitates.
They've only been on the job for four days. Everything is still unfamiliar. They don't yet know what's standard, and they definitely don't want to be the person who challenges the CEO during their first week.
So they act on it.
And with that one decision, the breach begins.
Why week one is the biggest risk
Each spring, companies welcome a fresh group of employees, many of them recent grads and summer interns starting their first professional roles. For organizations, it's onboarding season. For cybercriminals, it's prime hunting season.
Keepnet Lab's 2025 New Hires Phishing Susceptibility Report found that CEO impersonation emails are 45% more likely to work on new hires than on experienced employees.
Attackers don't focus on your most seasoned staff. They target the people still learning the workflow, because the earliest days create a narrow window where everything feels uncertain and nothing feels fully established.
A new employee may not know what a normal request looks like. They may not understand how the CEO usually communicates. They haven't yet built the instincts or confidence to question a suspicious message, and scammers know how to exploit that gap.
But here's the real takeaway: the new hire isn't the weak link. The biggest threat isn't the person who makes mistakes. It's the person trying hard to be helpful.
If you lead a team, you probably already know exactly who would respond first.
The real problem isn't training. It's the setup.
Now picture that employee's first day.
The laptop isn't ready. Access isn't fully provisioned. The email account is still being built. They borrow a coworker's login just to check one thing. They save a file locally because the shared drive isn't available. They use their personal phone to look up a client number because it's faster.
None of it feels dangerous. It feels practical. It feels like keeping things moving on a busy first day.
But during that first week, before everything is properly in place, several quiet risks start to stack up. Shared credentials create untracked access, files slip outside your backup systems, personal devices touch business data, and no one explains what to do when something seems suspicious.
The same Keepnet report shows new employees are 44% more vulnerable to phishing than long-tenured staff. That difference isn't about recklessness. It's about disorder. When onboarding is messy, security gets pushed aside. That's exactly the environment a phishing email is built for.
The attack didn't create the weakness. The first day did.
How to set up a safer first day
Solving this doesn't require a lengthy security lecture on day one. It requires three things to be ready before the new employee ever arrives.
1. Their access is prepared, not patched together.
That means the laptop is ready, credentials are created in advance, and permissions are clearly assigned. No shared logins, no temporary fixes, and no "we'll handle it later this week."
2. They understand what normal communication looks like in your company.
This can be a fast 10-minute check-in. Does the CEO ever email about payments? Does anyone? What should they do if a message feels wrong? This isn't formal training; it's practical orientation.
3. They have a safe place to ask questions.
The employee who paused before opening that email probably would have asked someone if they knew who to contact. Most first-week mistakes happen quietly because new hires don't want to look unprepared.
Give them a contact. Give them a clear process.
Most security failures don't happen because someone ignores the rules. They happen because no one has explained the rules yet.
Maybe your onboarding process is already strong. Maybe your team is small enough that the first few days feel more personal than procedural. But if a new hire has ever had to make it up as they go — or if you're planning to bring someone on this spring — it's worth addressing the gaps before that Tuesday email shows up.
Click here or give us a call at 804-796-2631 to schedule your free 15-Minute Consult.
And if another business owner you know is hiring soon, send this their way. The best defense is built before the door is open.
