It lands in the inbox on a Tuesday morning.
The message appears to come from the CEO. The name checks out. The wording feels believable. Even the signature seems 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 there four days. They're still learning the workflow, the people, and the unwritten rules. They don't yet know what a normal request looks like, and they certainly don't want to challenge the CEO in their first week.
So they do what seems helpful.
And in that moment, the attack succeeds.
Why week one is the highest-risk window
Every spring, companies welcome a fresh group of employees, many of them recent graduates and summer interns taking on their first professional roles. For the business, it's onboarding. For cybercriminals, it's an opening.
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.
Attackers rarely target your most seasoned team members. They focus on the people still getting oriented, because the early days of employment are full of uncertainty.
A new employee may not know what a legitimate request should sound like. They may not understand how leadership typically communicates. They haven't had time to build confidence or pattern recognition, and criminals exploit that gap.
But the issue isn't the new hire. The biggest risk isn't someone being careless. It's someone trying to be useful.
If you manage a team, you probably already know exactly who would reply 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 finalized. They used someone else's login to check a file quickly. They saved work locally because the shared drive wasn't available. They reached for a personal phone to find a client number because it was faster.
None of it felt dangerous. It felt efficient. Practical. Like the only way to keep moving on a busy first day.
But during that first week, before the basics are in place, several things happen quietly: shared credentials create untracked access, files bypass your backup systems, personal devices touch business data, and nobody explains what to do when something feels suspicious.
According to the same Keepnet report, new employees are 44% more susceptible to phishing than tenured staff. That difference isn't about recklessness. It's about disorder. When onboarding is messy, security becomes an afterthought. That's exactly the 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
Solving this doesn't require a lengthy security lecture on day one. It means having three essentials ready before the employee arrives.
1. Their access should be ready, not improvised.
The laptop should be prepared, credentials should already exist, and permissions should be 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.
This can be as simple as a 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do 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 asked for help if they knew where to turn. Most 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 ignores the rules. They happen because no one has 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 a new hire has ever had to improvise through week one — or if you're hiring this spring — it's worth tightening the process before that Tuesday email arrives.
Click here or give us a call at 916-626-4000 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's hiring soon, send this their way. The smartest time to secure the door is before anyone tries the handle.
