An email lands in the inbox on a Tuesday morning.
It appears to come from the CEO. The name checks out. The wording feels right. Even the signature looks convincing.
"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 at the company for four days. Everything is still unfamiliar. They haven't learned the usual process yet, and they certainly don't want to be the person who questions the CEO during their first week.
So they do what seems helpful and move fast.
And in that moment, the fraud succeeds.
Why week one is the riskiest week
Each spring, organizations welcome a fresh group of employees, including recent graduates and summer interns starting their first professional roles. For businesses, it's onboarding season. For attackers, it's prime hunting 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 staff.
Cybercriminals don't usually target your most seasoned employees. They focus on the people who are still learning the culture, the workflow, and the warning signs. That early stage creates a gap where everything feels unclear and confidence is still forming.
A new employee doesn't yet know what a normal request sounds like. They don't know how the CEO typically communicates. They haven't had time to develop instincts, and criminals use that uncertainty to their advantage.
But the real issue isn't the new hire. The biggest risk isn't someone being reckless. It's someone trying too hard to be helpful.
If you lead a business, you probably already know exactly who on your team would respond first.
The weakness isn't training alone. It's the process around it.
Think back to that employee's first day.
The laptop wasn't fully set up. Access was incomplete. The email account was still being built. They borrowed a coworker's login to finish one task. They saved something on their local device because the shared drive wasn't ready. They used their personal phone to find a client number because it was quicker.
None of it felt dangerous. It felt efficient. It felt like the only way to keep moving on a busy first day.
But during that first week, when systems aren't fully in place, a few risky patterns can quietly take hold. Shared logins leave gaps no one monitors, files fall outside backup coverage, personal devices interact with company data, and no one has explained what to do when something seems suspicious.
The Keepnet report also showed that new employees are 44% more vulnerable to phishing than tenured staff. That difference isn't caused by negligence. It's caused by disorganization. When onboarding lacks structure, 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 exposed it.
What a secure first day should include
Solving this doesn't require a long lecture about security on day one. It requires three essentials to be ready before the employee arrives.
1. Access should be ready, not improvised.
That means the laptop is prepared, credentials are created, and permissions are clearly assigned. No borrowed logins, no temporary fixes, and no "we'll handle it later this week."
2. They should know what normal looks like in your company.
A quick 10-minute conversation can make a huge difference. Does the CEO ever email about payments? Who should they contact if a message feels unusual? This isn't formal training; it's practical orientation.
3. They need a safe place to ask questions.
The employee who paused before clicking that email might have checked with someone if they knew who to ask. Many first-week mistakes happen quietly because new hires don't want to seem inexperienced.
Give them a person. Give them a process.
Most security failures don't happen because someone breaks the rules. They happen because no one has taught the rules yet.
Maybe your onboarding is already strong. Maybe your team is small enough that the first few days feel personal rather than procedural. But if a new hire has ever had to figure things out on their own during week one — or if you're planning to hire this spring — it's worth addressing before that Tuesday email appears.
Click here or give us a call at 332-217-0601 to Speak to an Expert.
And if you know another business owner preparing to hire, pass this along. The best time to secure the door is before anyone tries to open it.
