It lands in the inbox on a Tuesday morning.
It appears to come from the CEO. The sender name checks out. The wording feels believable. Even the signature seems 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 hesitates.
They've only been there a few days. They're still learning the workflow. They don't yet know what's typical, and they certainly don't want to be the person who questions the CEO during week one.
So they comply.
And with one click, the damage begins.
Why week one is the riskiest time
Each spring, organizations welcome a fresh group of employees, including recent graduates and summer interns stepping into their first professional roles. For business leaders, that's onboarding season. For attackers, it's prime opportunity.
Keepnet Lab's 2025 New Hires Phishing Susceptibility Report found that CEO impersonation emails are 45% more likely to succeed with new hires than with experienced employees.
Cybercriminals don't usually target your most experienced staff. They focus on the people still learning the basics, because the start of employment is when everything is unfamiliar and confidence is still forming.
A new employee doesn't yet know what a normal request sounds like. They don't understand how the CEO usually communicates. They haven't had time to build instincts, and attackers use that uncertainty against them.
But the real issue isn't the new hire. The biggest risk isn't someone who is careless. It's someone who is trying to be helpful.
If you lead a team, you probably already know which person would respond first.
The problem usually isn't training. It's the setup.
Go back to that employee's first day.
The laptop wasn't ready. Access wasn't complete. The email account was still being provisioned. They borrowed a coworker's login to check one thing fast. They saved a document locally because the shared drive wasn't available yet. They used a personal phone to find a client number because it was quicker.
None of that felt dangerous. It felt efficient. Practical. Like the only way to keep moving on a hectic first day.
But during that first week, before everything is fully in place, several quiet risks appear. Shared credentials create accounts no one monitors, files move outside your backup environment, personal devices touch company data, and no one has yet explained what to do when something feels suspicious.
The same Keepnet report also found that new employees are 44% more susceptible to phishing than tenured staff. That gap isn't caused by recklessness. It's created by confusion. When onboarding is disorganized, security starts to feel optional. That's exactly the kind of environment a phishing email is waiting for.
The attack didn't create the weakness. The first day did.
What a secure first day should look like
Solving this doesn't require a long security lecture on day one. It requires three things to be ready before the employee arrives.
1. Their access is set up ahead of time, not figured out on the fly.
That means the laptop is ready, credentials are created, and permissions are clearly assigned. No shared 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 quick 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do if something seems unusual? This isn't formal training; it's simple orientation.
3. They know exactly where to ask questions without feeling embarrassed.
The employee who paused before opening that email probably would have asked someone if they knew who to contact. Most first-week mistakes stay hidden because new hires don't want to appear 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 has explained 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 you've ever had a new hire improvise their way through week one — or if you're planning to bring someone on this spring — it's worth addressing now, before that Tuesday email shows up.
Click here or give us a call at 816-238-3777 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's about to hire, send this their way. The smartest time to lock the door is before anyone tries it.
