An email lands on a Tuesday morning.
It appears to come from the CEO. The sender name checks out. The wording sounds believable. Even the signature feels authentic.
"Hey — can you help me with something quickly? I'm tied up in back-to-back meetings. I need you to process a vendor payment. I'll explain later."
The new hire stops and thinks.
They've only been there four days. They're still learning the workflow, still figuring out the unwritten rules, and the last thing they want to do is challenge a message that looks like it came straight from leadership.
So they do what seems helpful.
And in a matter of moments, the mistake is made.
Why week one is the riskiest week
Every spring, companies welcome a fresh round of employees, many of them recent graduates and summer interns taking on their first professional roles. For your team, it'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 staff.
Hackers don't target your most seasoned people first. They focus on the employees who are still learning how everything works, because the early days are full of uncertainty and unfamiliarity.
A new employee usually doesn't know what a normal request looks like yet. They don't know how the CEO typically communicates. They haven't built the instincts or confidence that come with experience, and cybercriminals count on that gap.
But here's the real issue: the new hire isn't the weak point. The biggest risk isn't someone being reckless. It's someone trying too hard to be helpful.
If you own a business, you probably already know exactly who on your team would reply first.
The real problem isn't just training. It's the process.
Think back to that employee's first day.
The laptop wasn't ready. Access wasn't fully configured. The email account was still being set up. They borrowed a coworker's login to check one thing quickly. They saved a file locally because they couldn't reach the shared drive. They used their personal phone to find a client number because it was faster.
None of that felt unsafe. It felt practical. It felt like the fastest way to keep moving on a busy first day.
But during that first week, before every system is fully in place, several risks quietly stack up. Shared credentials leave accounts untracked, files fall outside backup systems, personal devices touch business data, and nobody clearly explains what to do when something doesn't look right.
The same Keepnet report also found that new employees are 44% more susceptible to phishing than tenured staff. That gap isn't caused by negligence. It's caused by confusion. When onboarding is messy, security gets treated like an afterthought. That's exactly the kind of 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
Closing this gap doesn't require a long lecture on day one. It requires three essentials to be ready before the employee ever arrives.
1. Their access is set up in advance, not patched together.
That means the laptop is ready, credentials are created, and permissions are clearly defined. No shared logins, no temporary fixes, and no "we'll handle it later this week."
2. They know what normal communication looks like in your company.
This can be a quick 10-minute conversation. Does the CEO ever send payment requests? Does anyone? What should they do when something feels suspicious? This isn't full security training; it's simple orientation.
3. They have a safe place to ask questions.
The employee who hesitated before opening that email probably would have asked for help if they knew exactly who to contact. A lot of first-week mistakes happen quietly because new hires don't want to seem inexperienced.
Give them a person. Give them a clear process.
Most security mistakes don't happen because someone ignores the rules. They happen because nobody has explained the rules yet.
Maybe your onboarding 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 improvise through week one — or if you're planning to bring someone on this spring — it's worth addressing now, before that Tuesday morning email shows up.
Click here or give us a call at 817-589-0808 to schedule your free 30-Minute Discovery Call.
And if you know another business owner who's hiring soon, pass this along. The smartest time to secure the door is before anyone tries the handle.
