The message lands in the inbox on a Tuesday morning.
It appears to come from the CEO. The name is correct, the wording sounds believable, and even the signature feels authentic.
"Hey — can you jump on something fast? I'm tied up in back-to-back meetings. I need you to process a vendor payment. I'll fill you in later."
The new hire hesitates.
They've only been there four days. They're still learning the workflow, still trying to understand what's normal, and they don't want to be the person who challenges the CEO in their first week.
So they help.
And with that, the attack succeeds.
Why the first week creates the biggest risk
Each spring, companies welcome a fresh group of employees, including recent graduates and summer interns entering their first professional roles. For the business, it's onboarding season. For attackers, it's prime hunting time.
According to Keepnet Lab's 2025 New Hires Phishing Susceptibility Report, CEO impersonation emails are 45% more likely to work on new hires than on employees with more experience.
Cybercriminals don't usually target your most experienced staff first. They focus on the people still figuring things out, because early on, everything feels unfamiliar and nothing feels fully predictable.
A new employee may not recognize what a legitimate request looks like. They may not know how the CEO typically communicates. They haven't yet built the confidence or instincts that come with time, and attackers exploit that uncertainty.
But the issue isn't the new hire. The biggest threat isn't someone being reckless. It's someone trying hard to be helpful.
If you lead a team, you probably already know who would be the first to reply.
The real weakness isn't training. It's the setup.
Think back to that employee's first day.
The laptop wasn't ready. Access was incomplete. The email account was still being created. They used someone else's login just to check something quickly. They saved work locally because the shared drive wasn't available. They grabbed a client number from their personal phone because it was faster.
None of that seemed dangerous. It felt efficient. Practical. Like the only way to keep moving on a chaotic first day.
But during that first week, while everything is still being assembled, important risks quietly appear. Shared credentials create untracked accounts, files move outside backup systems, personal devices handle company data, and nobody has clearly explained what to do when something looks suspicious.
The Keepnet report also found that new employees are 44% more vulnerable to phishing than longer-tenured staff. That difference isn't about carelessness. It's about disorder. When onboarding is messy, security starts to feel optional. That's exactly the environment a phishing email is built for.
The attack didn't invent the weakness. The first day did.
What a secure first day should include
Solving this doesn't require a lengthy security lecture on day one. It requires three things to be ready before the new hire ever arrives.
1. Their access is set up in advance, not patched together.
That means the laptop is prepared, credentials are created, and permissions are clearly assigned. No borrowed logins, no temporary fixes, and no "we'll handle that later this week."
2. They understand what a normal request looks like in your company.
This can be a quick 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do if something feels strange? This isn't formal training; it's simple orientation.
3. They know exactly where to ask questions without embarrassment.
The employee who paused before clicking probably would have asked for help if they had known who to contact. Most first-week mistakes happen quietly because new hires don't want to seem inexperienced.
Give them a person. Give them a process.
Most security failures don't happen because someone ignores the rules. They happen because no one explained the rules yet.
Maybe your onboarding is already strong. Maybe your team is small enough that the first few days feel personal instead of procedural. But if you've ever had a new hire improvise through week one — or 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 702-896-7207 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's hiring soon, forward this to them. The safest time to close the door is before anyone gets the chance to walk through it.
