CoreTech
Cybersecurity

Phishing: how to reduce human risk | CoreTech

Phishing resilience combines technical controls, simple reporting, practice and a culture where employees do not hide mistakes.

CoreTech tim · 6 min

Employee and IT specialist review a suspicious message together in the workplace
KEY TAKEAWAYS

What to remember.

  • Employees are not a problem to blame, but a sensor to strengthen.
  • Reporting a suspicious message must be easier than forwarding it to a colleague.
  • Success means faster recognition and reporting, not only test scores.

The management answer

Phishing exploits urgency, authority, curiosity and routine. It cannot be solved by one annual training session. The organisation needs a system that reduces dangerous messages, limits the impact of a compromised account and helps employees report suspicion or error quickly.

A blame culture increases risk. If an employee fears the reaction, they may delay reporting a click or submitted password, even though the first minutes matter.

The technical layer

Configure email protection, domain authentication, dangerous attachment and link filtering, device patching and endpoint protection. MFA reduces the impact of stolen passwords, especially when phishing-resistant methods are used where practical.

Limit account rights and monitor unusual sign-ins, mailbox-rule changes and access attempts from new locations or devices. Technical controls should assume that some malicious messages will still get through.

People and the reporting process

Give employees one clear rule: do not verify a suspicious request through the same channel. If a message asks for an urgent payment or bank-detail change, confirm it through a known telephone number or another agreed path.

The reporting button or channel must be visible and simple. After reporting, the user should receive brief feedback. This builds the habit while giving the security team an earlier signal.

Practice that helps

Short, regular exercises are more useful than one long lecture. Scenarios should resemble the organisation's real work without humiliating or publicly ranking employees. The goal is pattern recognition and a safer response.

Beyond click rate, track reporting rate, time to first report and how many people request clarification after an exercise. These measures show whether the organisation is becoming a better sensor.

If someone clicked

  • Report immediately without deleting evidence
  • If credentials were entered, change the password and revoke sessions
  • Check MFA, mailbox rules and suspicious sign-ins
  • Isolate the device if an attachment or program was run
  • Preserve the message and event time for investigation

The CoreTech approach

We connect email protection, identity, devices, procedures and short exercises. Employees get a simple reporting path, while IT gets a clear process for investigation and containment.

FAQ / AEO

Common questions

Is annual training enough?

No. Risk is reduced more effectively through continuous technical controls, short reminders, realistic exercises and simple reporting.

What should an employee do first after clicking?

Report immediately. If credentials were entered, say so clearly so IT can revoke sessions and inspect the account.

Does MFA solve phishing?

It reduces risk but is not a complete answer. The right MFA method, email protection, monitoring and response process are still required.

Sources and further reading

  1. CISA Recognize and Report Phishing ↗
  2. CISA guidance for multifactor authentication ↗