The message lands in the inbox on a Tuesday morning.
It appears to come from the CEO. The name is correct, the tone sounds right, 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 hesitates.
They've only been with the company for four days. They're still learning the workflow, still figuring out what normal looks like, and they definitely don't want to be the person who challenges the CEO in week one.
So they do what seems helpful and move it forward.
And in an instant, the compromise is underway.
Why week one is the biggest risk
Each spring, businesses welcome a fresh group of hires, including recent graduates and summer interns stepping into their first professional roles. For organizations, it's onboarding season. For cybercriminals, it's prime targeting 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 employees.
Attackers don't usually focus on your most experienced team members. They target the people still learning how things work because the early days create a gap where everything feels unfamiliar and nothing feels certain.
A new employee may not know what a legitimate request looks like. They may not understand how the CEO normally communicates. They haven't had time to develop the instincts or confidence that come with experience, and criminals exploit that uncertainty.
But here's the real point: the new hire isn't the weakness. The greatest risk isn't someone being careless. It's someone trying hard to be helpful.
If you lead a team, you probably already know exactly who would reply first.
The real issue isn't awareness. It's readiness.
Now think back to that employee's first day.
The laptop wasn't ready. Access wasn't fully provisioned. Their email account was still being created. They borrowed a coworker's login to check something in a hurry. They saved a file locally because the shared drive wasn't available. They used their personal phone to look up a client number because it felt faster.
None of that seemed dangerous. It felt practical. It felt like keeping momentum on a busy first day.
But during that first week, before every system is fully in place, several risks quietly stack up. Shared credentials create untracked accounts, files drift outside backup coverage, personal devices touch company data, and no one explains what to do when something doesn't look right.
The same Keepnet report found that new employees are 44% more susceptible to phishing than tenured staff. That gap isn't caused by recklessness. It's caused by disorder. When onboarding is messy, security becomes secondary. That's the environment the phishing email is counting on.
The attack didn't create the weakness. The first day did.
What a secure first day should include
Solving this doesn't require an hour-long security lecture on day one. It requires three essentials to be in place before the new hire arrives.
1. Their access is set up ahead of time, 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 understand what a normal request looks like in your company.
This can be a fast, 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do if a message feels suspicious? This isn't formal cybersecurity training; it's practical orientation.
3. They know exactly where to go with questions.
The employee who paused before clicking probably would have asked for help if they knew who to contact. Most first-week mistakes stay hidden because new hires don't want to look 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 wing it through week one — or if you're planning to bring someone on this spring — it's worth reviewing the process before that Tuesday email shows up.
Click here or give us a call at 888-820-2992 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's about to hire, pass this along. The best time to secure the door is before anyone tries to open it.
