It lands in the inbox on a Tuesday morning.
At first glance, it appears to come straight from the CEO. The sender name checks out, the voice sounds believable, and even the signature feels authentic.
"Hey — can you help me with something quickly? I'm in back-to-back meetings. Need you to handle a vendor payment. I'll explain later."
The new hire stops and hesitates.
They've only been with the company for four days. They're still learning the workflow, still figuring out what counts as normal, and they definitely don't want to be the person who questions the CEO during their first week.
So they try to be helpful and move forward.
By then, the breach has already begun.
Why week one is the biggest risk
Each spring, companies welcome a fresh group of employees, many of them recent graduates and summer interns starting their first professional roles. For your business, it's onboarding season. For cybercriminals, it's an opportunity.
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.
Attackers rarely target your most experienced people first. They focus on employees who are still adjusting, because the opening days of a job are full of uncertainty and unfamiliar processes.
A new team member doesn't yet know what a legitimate request looks like. They don't know how the CEO usually communicates. They haven't developed the instincts that come with time, and criminals exploit that gap.
But the issue isn't the new hire. The biggest risk isn't someone being reckless. It's someone who is trying to do the right thing.
If you manage a business, you probably already know exactly which team member would answer first.
The weakest point isn't
training. It's the setup.
Think back to that employee's first day.
The laptop wasn't fully ready. Access wasn't complete. The email account was still being provisioned. They used someone else's login to check a task quickly. They saved a file on their device because the shared drive wasn't available. They pulled up a customer number on their personal phone because it was faster.
None of that felt unsafe. It felt practical. It felt like getting through a busy first day without slowing everyone down.
But during that first week, while the basics are still being built, critical risks quietly appear. Shared credentials leave untracked access behind, files escape your backup protections, personal devices touch company data, and nobody has explained what to do when something seems suspicious.
According to the same Keepnet report, new employees are 44% more likely to fall for phishing than longer-tenured staff. That difference isn't about negligence. It's about disorder. When onboarding is messy, security becomes an afterthought. That's the exact environment a phishing email is hoping to find.
The email didn't create the weakness. The first day did.
What a secure first day should include
Solving this doesn't mean delivering an hour-long security lecture on day one. It means having three essentials ready before your new hire arrives.
1. Access is fully prepared, not pieced together.
The laptop should be ready, credentials should already exist, and permissions should be clearly assigned. No borrowed logins, no temporary fixes, and no "we'll handle it later this week."
2. They understand what a normal request looks like in your company.
This can be a short 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do when a message feels off? This isn't formal training; it's practical orientation.
3. They know exactly where to go with questions.
The employee who paused before clicking that email probably would have asked someone if they knew who to contact. Many first-week mistakes happen silently because new hires don't want to appear inexperienced.
Give them a person. Give them a clear process.
Most security failures don't happen because someone knowingly breaks the rules. They happen because no one taught them the rules yet.
Maybe your onboarding process is already strong. Maybe your team is small enough that first days feel more personal than procedural. But if a new hire has ever had to improvise through week one — or if you're planning to bring someone on this spring — it's worth having the conversation before that Tuesday email shows up.
Click here or give us a call at 316-867-4566 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's about to hire, share this with them. The best time to secure that opening is before anyone has a chance to walk through it.
