It arrives on a Tuesday morning.
At first glance, it looks legitimate — the sender name matches the CEO, the wording feels convincing, and the signature seems real.
"Hey — can you help me with something quickly? I'm stuck in back-to-back meetings. I need you to take care of a vendor payment. I'll fill you in later."
The new hire hesitates.
They've only been on the job for four days. They're still learning the workflow, still figuring out who does what, and they don't want to be the person who challenges the CEO this early.
So they act on it.
And in a matter of seconds, the fraud succeeds.
Why the first week is the highest-risk window
Each spring, organizations welcome a fresh wave of hires, including recent graduates and summer interns starting their first professional roles. For businesses, that means onboarding season. For cybercriminals, it means 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 employees with more experience.
Attackers don't usually focus on your most experienced staff. They target the people still getting oriented, because early on, everything feels unfamiliar and every decision carries a little uncertainty.
A new employee may not know what a standard request sounds like. They may not understand how the CEO typically communicates. They haven't had time to build confidence or instinct yet, and criminals exploit that gap.
But the issue isn't the new hire. The greatest risk isn't a careless employee. It's the one who wants to be helpful.
If you're a business owner, you can probably already picture who on your team would respond first.
The problem isn't just training. It's the environment.
Think about that employee's first day.
The laptop wasn't ready. Access wasn't fully provisioned. The email account was still being set up. They borrowed someone else's login to check one thing quickly. They saved a file to their desktop because the shared drive wasn't available. They used a personal phone to find a client number because it was faster.
None of it seemed dangerous. It just felt practical — the kind of improvisation that gets a busy first day moving.
But in that opening week, before systems are fully in place, several quiet risks appear. Shared credentials create untracked access, files slip outside backup coverage, personal devices touch company data, and no one clearly explains what to do when something doesn't feel right.
The same Keepnet report also found that new employees are 44% more likely to fall for phishing than longer-tenured staff. That isn't because they're reckless. It's because onboarding is messy. And when onboarding is messy, security becomes an afterthought. That's exactly the environment a phishing email is designed to exploit.
The attack didn't invent the weakness. The first day did.
What a secure first day should include
Solving this doesn't require a lengthy cybersecurity lecture on day one. It requires three essentials to be in place before the employee ever sits down at their desk.
1. Their access should be ready, not improvised.
That means the laptop is prepared, credentials are issued, and permissions are clearly defined. No shared logins, no temporary fixes, and no "we'll handle it later this week."
2. They should understand what a normal request looks like in your company.
This can be a simple 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should the employee do if something seems suspicious? This isn't a formal course; it's practical orientation.
3. They need a safe place to ask questions.
The person who paused before opening that email probably would have checked with someone if they'd known who to ask. Many first-week mistakes happen quietly 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 explained the rules yet.
Maybe your onboarding is already strong. Maybe your team is small enough that first days feel more personal than process-driven. But if a new hire has ever had to figure things out on the fly during week one — or if you're bringing someone on this spring — it's worth addressing before that Tuesday email shows up.
Click here or give us a call at (210) 582-5814 to schedule your free Discovery Call.
And if you know another business owner who's preparing to hire, share this with them. The smartest time to lock the door is before anyone tries to open it.
