The hacker who breached education tech giant PowerSchool claimed in an extortion demand that they stole the personal data of 62.4 million students and 9.5 million teachers.

Education technology giant PowerSchool has confirmed a data breach that may have exposed information on millions of schoolchildren, putting them at risk of identity theft. PowerSchool has over 18,000 clients,

PowerSchool, a software provider popular at K-12 schools, was the target of a data breach in late December that affected many districts in the U.S. and in other countries, according to the company and several impacted schools .