When I’m asked about insider threats, the first thing I focus on isn’t high-tech monitoring or data encryption. It’s the daily routine inside the workplace—how people move, what they’re allowed to access, and where simple habits create openings. The trick with insider threats is that the risk usually doesn’t come from some dramatic act. Often, it’s a quiet lapse, a shortcut, or a careless step that opens the way.
Take, for example, a business I recently worked with where the finance team had shared their login credentials to speed things up during busy periods. No one thought twice about it because it was “just easier” to let a colleague cover for someone on leave. What this meant in practice was that anyone with those details could access sensitive information without a formal record or alert. One day, a staff member left the company suddenly, and their access wasn’t revoked immediately. Records showed transactions that didn’t match the usual patterns, but because the credentials were shared, it was hard to say who had done what until it was too late.
Another common slip is how physical access can be overlooked inside. In one warehouse I checked, employees were given card passes that allowed them into the office area, but nobody checked if those passes were actually in use or if they had been copied. A former employee kept a pass and was popping in after hours because doors were held open for convenience. There was no log or camera watching those movements closely, so when stock started vanishing, it took weeks to connect the dots.
Then there’s the issue of sensitive information on shared devices. At a mid-sized office, multiple people used the same computers in a common area. They often left screens unlocked when they stepped away or placed confidential files in easy-to-reach folders without any passwords. I noticed staff casually sharing passwords over email or chat, too. It’s not always malicious – often it’s about getting the job done quickly. But those habits can turn a regular employee into a conduit for data leaks or sabotage.
The gap between security policies and what actually happens day to day is where insider risks grow. I’ve seen businesses with strict rules on paper, but those rules get relaxed when supervisors are busy or when the team feels trusted. For example, if an employee has approval to use certain systems, but the manager doesn’t check activity logs, there’s little chance to catch misuse early. One office relied heavily on a security system to flag unusual activity but had no one reviewing alerts regularly. When a trusted employee exploited that, it went unnoticed for weeks.
What stands out most in my experience is how often the weakest point is human behaviour rather than technology or locks. People sharing passwords, leaving screens unlocked, keeping old access cards, or ignoring change requests for system permissions are small slips that add up. They don’t usually look like threats in the moment, more like productivity hacks or harmless shortcuts. But they quietly open the door to bigger problems.
I’ve come across businesses where employees complained about cumbersome security measures, and leadership relaxed rules to avoid friction. This usually backfires. The more you cut corners on monitoring or fail to follow up on access changes, the more doors you leave open. It’s not just about keeping outsiders out—sometimes the biggest risk is someone who knows the routines and where the soft spots are.
Checking for insider risks means looking beyond just who has access. It means watching what’s actually being done with that access, how often permissions are reviewed, and how well staff understand the importance of security practices. It’s about spotting the small habits that turn into blind spots: shared accounts, unlogged access, unmonitored devices, and overlooked policy enforcement.
This isn’t a quick fix. It takes consistent attention to how people actually work, not just what the rules say. A quick walk through an office or warehouse usually shows the problem: open desks with unattended devices, sticky notes with passwords on monitors, or shared login details left in plain sight. Until those everyday slips are addressed, insider threats will remain a quiet but constant risk.
