These 3,115 people were not careless. They simply never told anyone.
PHISH counts first reports per person, so the security team can name these 345 rather than infer them from an average.

345 people who had never reported a phishing simulation have now done it once.
That is approximately 11% of the cohort, every one of them from a lifetime record of zero, and every one of them named in PHISH.
Source: CybSafe PHISH, August 2026 Phishing Simulation, customer anonymised. Cohort: 3,115 people with no previously recorded phishing report. First-time reporter = a person with no prior recorded report who reported this simulation.
first-time reporters in one campaign
reports from these 3,115 people, ever, before the campaign
of the cohort reported for the first time
nudges over four weeks, through Teams and email
reporting simulation to the whole cohort