**Ransomware Groups Exploit Legitimate Employees to Bypass Security Measures**
A disturbing trend has emerged in the world of cybersecurity, as ransomware groups increasingly turn to recruiting from within organizations themselves. By targeting employees with legitimate access, these malicious actors can bypass even the strongest security measures and wreak havoc on a company’s data and finances.
This phenomenon reflects both good news and bad for companies. On the one hand, it suggests that their strengthened security protocols are making them more resilient against external threats. However, this also means that cybercriminals have adapted to exploit the very thing that firewalls and VPNs can’t defend against: people with authorized access. The consequences of insider-assisted ransomware attacks can be devastating, including financial losses, compliance violations, and complete data exfiltration.
According to a recent report by SentinelOne, the annual cost of insider threats has reached a staggering $19.5 million per organization in 2026. Notably, 56% of incidents were attributed to negligent insiders who fell prey to phishing lures or lost company devices. However, breaches tied to malicious insiders with elevated privileges are significantly more expensive, averaging around $4.9 million per event.
The threat from rogue employees is on the rise. Mimecast’s “The State of Human Risk 2026” report found a 42% increase in malicious insiders over the past year. While negligent insiders remain a more common problem, it’s clear that addressing both types of threats has become increasingly crucial for organizations.
Disgruntled employees have historically been responsible for many insider threat scenarios. For example, Christopher Dobbins was sentenced to federal prison in 2020 for hacking his former employer and sabotaging its electronic shipping records, causing over $200,000 in damages and delaying the shipment of personal protective equipment during the COVID-19 pandemic.
Recruitment trends on the Dark Web suggest that a significant number of threat actors are now seeking out insiders advertising their access to malicious third parties. This indicates a highly motivated threat landscape where disgruntled employees seek to monetize corporate data and network points.
Experts warn that organizations must be vigilant in monitoring employee behavior, especially those with high levels of access. “You don’t want to piss off the guy who’s in charge of your network,” says Justin Miller, a retired senior special agent with the US Secret Service. “There’s always an insider who gets upset about things.”
Companies should not assume that they sit lower on the radar of ransomware groups or believe they have foolproof defenses. Even if their security measures are robust, the vulnerability could be someone on the inside working with malicious actors. As Jamie Levy from Huntress explains, “We see a lot of that stuff too, where there’s a plant or the ransomware actors are like: ‘Hey, we’ll pay you to give us access’.”
The takeaway for organizations is clear: they must prioritize insider threat mitigation and address both negligent and malicious insiders. By doing so, they can minimize their risk of being exploited by ransomware groups and protect themselves from devastating financial losses.
Source: Dark Reading — 2026-09-01