It lands in the inbox on a Tuesday morning.
The message appears to come from the CEO. The name is right, the tone sounds familiar, and even the signature feels authentic.
"Hey — can you jump on something for me? I'm tied up in back-to-back meetings and need you to take care of a vendor payment. I'll fill you in later."
The new hire stops and stares.
They've only been on the job 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 a CEO request in week one.
So they do what seems helpful.
And just like that, the breach begins.
Why week one is the highest-risk window
Every spring, companies welcome a new wave of employees, from recent graduates to summer interns stepping into their first professional roles. For businesses, that's onboarding season. For cybercriminals, it's prime hunting season.
Keepnet Lab's 2025 New Hires Phishing Susceptibility Report found that CEO impersonation emails are 45% more likely to fool new hires than experienced staff.
Attackers don't usually target your most seasoned employees. They target the people still getting oriented, because the beginning of a job is full of uncertainty and missing context.
A new employee doesn't know what a routine request should sound like. They don't yet understand how the CEO communicates. They haven't had time to build instincts, and that lack of familiarity is exactly what attackers exploit.
But here's the truth: the new employee isn't the weakness. The real risk is rarely the person. It's the person trying hard to be helpful.
If you lead a business, you probably already know which team member would answer first.
The real problem isn't training. It's the setup.
Go back to that employee's first day.
The laptop wasn't ready. Access wasn't fully provisioned. The email account was still being created. They borrowed a coworker's login to check one thing quickly. They saved a file on their local drive because the shared folder wasn't available. They used a personal phone to look up a client number because it was faster.
None of that felt unsafe. It felt efficient. It felt like doing what needed to be done to survive a chaotic first day.
But during that first week, before everything is properly in place, important risks quietly stack up. Shared credentials create accounts no one can trace. Files sit outside backup coverage. Personal devices touch company data. And no one has clearly explained what to do when something feels suspicious.
The same Keepnet report also found that new employees are 44% more likely to fall for phishing than tenured staff. That gap isn't driven by recklessness. It's driven by disorder. When onboarding is messy, security becomes an afterthought. That's exactly the environment a phishing email is built to exploit.
The attack didn't invent the weakness. The first day did.
What a secure first day should look like
You don't need a marathon security presentation on day one. You need three things in place before the employee ever arrives.
1. Their access is set up properly, not made up on the fly.
That means the laptop is ready, credentials are issued, and permissions are clearly assigned. No borrowed logins, no temporary fixes, and no "we'll handle it later this week."
2. They understand what normal communication 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 if something feels suspicious? This isn't full-scale training; it's practical orientation.
3. They know where to ask questions without feeling embarrassed.
The employee who hesitated before clicking that email might 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 intentionally breaks the rules. They happen because the rules haven't been clearly explained yet.
Maybe your onboarding is already strong. Maybe your team is small enough that first days feel more personal than procedural. But if you've ever watched a new hire improvise through week one — or if you're about to bring someone on this spring — it's worth tightening the process before that Tuesday email shows up.
Click here or give us a call at 973-439-0306 to schedule your free 10-Minute Discovery Call.
And if you know another business owner who is hiring soon, forward this to them. The smartest time to secure the door is before anyone tries the handle.
