An email lands on a Tuesday morning.
It appears to be from the CEO. The sender name checks out, the tone sounds right, and even the signature feels 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 there four days. They're still learning the workflow, still unsure what normal looks like, and they definitely don't want to be the person who challenges the CEO in week one.
So they do the helpful thing and move ahead.
By then, the compromise has already happened.
Why week one is the easiest time to exploit
Every spring, companies welcome a fresh group of employees, many of them recent graduates and summer interns starting their first professional roles. For the business, it's onboarding season. For attackers, it's prime opportunity.
Keepnet Lab's 2025 New Hires Phishing Susceptibility Report says CEO impersonation emails are 45% more likely to work on new hires than on experienced staff.
Threat actors don't focus on your most seasoned people. They target the employees still getting oriented because early on, everything feels unfamiliar and confidence is low.
A new employee usually doesn't know what a legitimate request looks like. They don't yet understand how the CEO typically communicates. They haven't had time to develop instincts or trust their judgment, and attackers exploit that uncertainty.
But the real issue isn't the new hire. The most vulnerable employee isn't the one who is careless. It's the one who is trying to help.
If you lead a team, you probably already know exactly who would answer that message first.
The problem usually isn't training. It's the setup.
Think about that employee's first day.
The laptop wasn't ready. Access wasn't fully provisioned. The email account was still being built. They borrowed someone else's login to check something fast. 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 quicker.
None of it felt dangerous. It felt practical. It felt like making things work on a hectic first day.
But during that first week, before everything is properly in place, a few serious risks quietly appear. Shared credentials create accounts no one can track, files slip outside backup systems, personal devices touch company data, and nobody has explained what to do when something feels suspicious.
According to the same Keepnet report, new employees are 44% more likely to fall for phishing than longer-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 waiting for.
The attack didn't create the weakness. The first day did.
What a secure first day should include
Solving this doesn't mean delivering a long security lecture on day one. It means having three essentials in place before the employee arrives.
1. Their access is set up in advance, not improvised.
That means the laptop is ready, credentials are created, and permissions are clearly assigned. No borrowed logins, no temporary hacks, and no "we'll handle that later this week."
2. They understand what a normal request looks like in your business.
This can be a fast 10-minute conversation. Does the CEO ever email about payments? Does anyone? What should they do if a message seems unusual? This isn't formal training; it's basic orientation.
3. They have a safe place to ask questions without embarrassment.
The employee who paused before clicking that email probably would have asked someone if they had known who to contact. Most first-week errors happen quietly because new hires don't want to seem inexperienced.
Give them a person. Give them a process.
Most security mistakes don't happen because someone breaks 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 procedural. But if a new hire has ever had to improvise through week one — or if you're preparing to add someone this spring — it's worth addressing before that Tuesday email shows up.
Click here or give us a call at 281-402-2620 to schedule your free 15-Minute Discovery Call.
And if you know another business owner who's about to hire, pass this along. The smartest time to secure the door is before anyone tries to open it.
