It lands in the inbox on a Tuesday morning.
The sender appears to be the CEO. The name is right. The wording feels believable. Even the signature looks authentic.
"Hey — can you help me with something quickly? I'm stuck in back-to-back meetings and need you to process a vendor payment. I'll fill you in later."
The new hire hesitates.
They've only been in the role for four days. They're still learning the company, still trying to understand what normal looks like, and they definitely don't want to be the person who questions the CEO in week one.
So they help.
And just like that, the breach begins.
Why week one is the highest-risk window
Each spring, companies welcome a fresh round of employees, including recent graduates and summer interns entering their first professional roles. For businesses, 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 staff.
Hackers don't start with your most experienced people. They target the employees still getting oriented because the early days come with a lot of uncertainty and very few instincts to rely on.
A new employee doesn't yet know what an ordinary request should look like. They don't know how the CEO usually communicates. They haven't built the confidence or context to spot a fake, and attackers count on that gap.
But here's the critical part: the new hire isn't the weakness. The real risk is rarely carelessness. It's eagerness to be helpful.
If you lead a business, you probably already know which person on your team would answer first.
The real problem isn't training. It's the process.
Think back to that employee's first day.
The laptop wasn't fully set up. Access was still being finalized. The email account wasn't ready yet. They borrowed a coworker's login to check one thing quickly. They saved a file on their desktop because the shared drive wasn't available. They used a personal phone to look up a client number because it was faster.
None of that felt dangerous. It felt practical. It felt like doing whatever it took to keep moving on a hectic first day.
But during that first week, before the basics are fully in place, several risky things happen quietly. Shared logins leave no clear trail, documents slip outside backup systems, personal devices touch company data, and nobody explains what to do when something seems suspicious.
The same Keepnet report found that new employees are 44% more likely to fall for phishing than tenured workers. That difference isn't about recklessness. It's about confusion. When onboarding is disorganized, security becomes an afterthought. That's exactly the environment a phishing email is designed to exploit.
The attack didn't create the weakness. The first day did.
What a secure first day should include
Solving this doesn't require a long lecture on cybersecurity. It requires three essentials to be ready before the employee even arrives.
1. Their access is fully prepared, not pieced together.
That means the device is ready, credentials are created, and permissions are clearly defined. No shared logins, no temporary shortcuts, and no "we'll fix it later this week."
2. They know what a legitimate request looks like in your company.
This can be a fast 10-minute conversation. Does the CEO ever ask for payment approvals by email? Does anyone? What should they do if something feels suspicious? This isn't a formal course; it's basic orientation.
3. They know exactly where to turn with questions.
The employee who paused before clicking that email probably would have asked someone if they knew who to ask. Most first-week mistakes happen in silence because new hires don't want to seem inexperienced.
Give them a person. 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 already runs smoothly. Maybe your team is small enough that the first day feels more personal than procedural. But if you've ever had a new hire improvise through week one — or if you're planning to bring someone on this spring — it's worth addressing before that Tuesday email shows up.
Click here or give us a call at (502) 473-9330 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's hiring soon, send this their way. The smartest time to secure the door is before anyone tries to open it.
