A Fortune 500 credential leaks every 100 seconds
9.96 million employee logins are already on the dark web. See how exposed your industry is, why the browser is the weak point, and what steps you can take to lower your risk.
KEY RESEARCH FINDINGS
The scale of Fortune 500 credential exposure
130,000 credentials leaked in roughly 147 days of 2026 alone.
6.6 million unique corporate email addresses have leaked across all available historical data.
99% of records harvested by infostealers in 2026 were taken from web browsers.
ATTACK TIMELINE
How infostealers target Fortune 500s
- 1
Infection
An infostealer breaches a personal or work device and copies every account password that’s been stored on it.
- 2
Sale
Stolen logins are listed on dark web forums, marketplaces, and Telegram channels, sold cheap and in bulk, with nearly 10 million already in circulation.
- 3
Testing
Buyers run stolen credential lists through automated tools that test each login against corporate systems at scale with no special skill required.
- 4
Access
A single working combination is enough to get inside. The effort is minimal, but the potential damage to the business is huge.
Contents
What’s inside the full report?
See the full dataset behind the headline numbers, broken down by industry, company size, and attack source, plus a 5-step plan to lower your exposure level.
The real scale of exposure
How a Fortune 500 credential appeared on the dark web every 100 seconds in 2026.
Why company size changes the risk
How 9.96 million unique Fortune 500 employee credentials (email and password pairs) break down by company size, and what that means for your business.
The industries under most pressure
See which sectors, led by media and entertainment, telecommunications, technology, and financial services, face the highest per-employee exposure rates, and why it’s ordered this way.
A 5-step plan to help you prepare
Follow five simple steps to strengthen access control for web-based apps, limit credential exposure, and increase visibility at the browser layer.
METHODOLOGY
How we built this research
NordLayer Intelligence by NordStellar analyzed 34.86 million raw records tied to the 2026 Fortune 500’s 3,692 corporate domains, deduplicating them into 9.96 million unique credential pairs and matching each company to its industry, revenue, and headcount to calculate exposure per 1,000 employees.
SEE THE INSIGHTS
Get your free copy of the report today
Read the full data behind the Fortune 500 Credential Exposure Report 2026, nearly 10 million leaked logins, no form-filling required.