Hackers have breached Verizon systems and stole data pertaining to the company’s business customers.
The telecom giant said on Thursday that its Verizon Enterprise Solutions unit, which provides IT services to big companies, recently discovered and fixed a security vulnerability in a client portal.
The company is already notifying customers about the breach.
No data about consumer customers was involved in the breach.
A Thursday report from security journalist Brian Krebs says a post in a “closely guarded underground cybercrime forum” earlier this week advertised that a database with the contact information of 1.5 million Verizon business customers was for sale.
The hacker of the company’s information is selling access to the entire database for $100,000 or $10,000 for slices of 100,000 customers.
Verizon has not revealed how the breach occurred and the company has not named any of its affected business customers.
Twitter users were quick to poke fun at a division of Verizon that is partially built around protecting customer data.
— Sarah Williams (@SarahFWilliams) March 25, 2016