It starts with a Tuesday morning email.
Everything about it seems legitimate. The sender appears to be the CEO, the wording sounds familiar, and even the signature passes a quick glance.
"Hey — can you help me with something quickly? I'm tied up in back-to-back meetings. I need you to process a vendor payment. I'll explain later."
The new hire stops and thinks.
They've only been in the role 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 questions the CEO during week one.
So they do what seems helpful.
And that single decision is enough to cause real damage.
Why the first week is the riskiest week
Every spring, companies welcome a fresh group of employees, many of them recent graduates and summer interns stepping into their first professional roles. For businesses, it's onboarding season. For cybercriminals, it's prime hunting season.
Keepnet Lab's 2025 New Hires Phishing Susceptibility Report found that CEO impersonation emails are 45% more likely to succeed with new hires than with experienced staff.
Hackers don't always target your most experienced team members. They focus on the people still learning the basics, because early on, everything is unfamiliar and confidence is still developing.
A new employee may not know what a normal request looks like. They may not understand how the CEO usually communicates. They haven't had time to build instincts yet, and attackers exploit that uncertainty.
But here's the important part: the new employee isn't the flaw. The biggest risk is often the person who wants to help, not the person who wants to harm.
If you lead a team, you probably already know which employee would answer first.
The real issue isn't just training. It's the structure.
Think back to that employee's first day.
The laptop wasn't fully ready. Access was still being configured. The email account wasn't active yet. They borrowed a coworker's login to check one thing quickly. They saved a file on their local device because the shared drive wasn't available. They used a personal phone to look up a client number because it saved time.
None of that felt dangerous. It felt practical. It felt like getting through a busy first day.
But in that first week, before everything is fully set up, several risk points quietly appear. Shared credentials create untracked accounts, files land outside your backup environment, personal devices touch company data, and no one has clearly explained what to do when something seems suspicious.
That same Keepnet report also found that 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 easy to ignore. That's exactly the kind of environment a phishing email is built to exploit.
The attack didn't create the weakness. The first day did.
What a stronger first day looks like
You don't need a marathon security briefing on day one. You need three essentials ready before the new hire arrives.
1. Their access is set up in advance, not figured out on the fly.
That means the device is ready, login credentials are created, and permissions are clearly assigned. No shared passwords, no quick fixes, and no "we'll handle it later this week."
2. They 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 they do if a message feels unusual? This isn't a formal training session; it's basic orientation.
3. They have a safe place to ask questions.
The employee who hesitated before opening that email likely would have checked with someone if they'd known where to turn. Most early mistakes happen quietly because new hires don't want to appear unsure.
Give them a person. Give them a process.
Most security incidents don't happen because someone chooses to break the rules. They happen because the rules haven't been made clear yet.
Maybe your onboarding process is already strong. Maybe your team is small enough that the first week feels personal instead of procedural. But if a new hire has ever had to improvise their way through day one — or if you're planning to bring someone on this spring — it's worth addressing the gaps before that Tuesday email lands.
Click here or give us a call at 1300 765 014 to schedule your free 15-Minute Discovery Call.
And if you know another business owner preparing to hire, pass this along. The smartest way to protect that door is to secure it before someone tries to walk through.
