The email lands on a Tuesday morning.
It appears to come from the CEO. The name is right. The wording sounds right. Even the signature feels convincing.
"Hey — can you help me with something fast? 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 at the company for four days. They're still learning the workflow. They don't yet know what's normal, and they certainly don't want to be the person who questions the CEO during their first week.
So they try to help.
And in that moment, the breach begins.
Why week one is the riskiest week
Every spring, companies welcome a fresh round of employees, including new graduates and summer interns beginning their first jobs. For the business, it's onboarding season. For cybercriminals, it's prime hunting season.
According to Keepnet Lab's 2025 New Hires Phishing Susceptibility Report, CEO impersonation emails are 45% more likely to work on new hires than on experienced staff.
Attackers rarely focus on your most seasoned team members. They target the people still trying to understand the rules, because the opening days of a new role are full of uncertainty.
A new employee may not know what a legitimate request looks like. They may not understand how the CEO usually communicates. They haven't had time to build instincts or confidence, and criminals use that uncertainty to their advantage.
But the issue isn't the new employee. The biggest risk isn't someone who's careless. It's someone who wants to be helpful.
If you own a business, you probably already know exactly who on your team would reply first.
The real problem isn't training. It's the setup.
Think back to that person'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 something quickly. They saved a file to the local desktop because the shared drive wasn't available. They used a personal phone to look up a client number because it was faster.
None of that felt dangerous. It felt practical. It felt like being resourceful on a hectic first day.
But during that first week, before everything is properly in place, a few things quietly go wrong. Shared credentials create untracked access. Files sit outside your backup systems. Personal devices touch business data. And nobody explains what to do when something feels suspicious.
The same Keepnet report found that new employees are 44% more vulnerable to phishing than long-tenured staff. That gap isn't caused by negligence. It comes from 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 looks like
Solving this doesn't require a long security lecture on day one. It requires three things to be ready before the new hire arrives.
1. Access is set up before they start, not figured out on the fly.
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 that later this week."
2. They know what normal communication looks like in your company.
This can be a quick 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do if something seems off? This isn't formal training; it's practical orientation.
3. They have a safe place to ask questions.
The employee who paused before clicking that message probably would have checked with someone if they knew who to ask. Most first-week mistakes happen quietly 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 week feels more personal than procedural. But if a new hire has ever had to improvise their way through week one — or if you're planning to hire this spring — it's worth addressing before that Tuesday email shows up.
Click here or give us a call at (918) 770-9150 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's preparing to hire, pass this along. The best time to lock the door is before anyone tries it.
