In this Wednesday, Nov. 13, 2019 file photo, a Disney logo forms part of a menu for the Disney Plus movie and entertainment streaming service on a computer screen in Walpole, Mass. Disney Plus says it doesn't have a security breach, but some users of the new streaming service have been shut out after hackers tried to break into their accounts. (AP Photo/Steven Senne, File)

Disney says Disney Plus account passwords being sold in underground hacking forums are coming from previous breaches at other companies, predating last week's launch of its streaming service.

The reiterated Wednesday that it found no evidence of a security breach and that account problems are limited to "a very small percentage of users."

Despite warnings by , users often reuse passwords at multiple services, meaning a breach at one opens the door for a hacker to gain access to the others.

The news site ZDNet found stolen account usernames and passwords selling for $3 on underground hacking forums. Disney's streaming service costs $7 a month or $70 a year.