PwC Probes Security Incident Tied to Russian-Speaking Clop Gang

A criminal hacking gang has added more names to its lists of alleged victims from a recent campaign that exploited a vulnerability in a popular file-transfer product.

The group, known as Clop, threatened to post internal data from professional services firms Pricewaterhousecoopers LLPand Ernst & Young LLP unless they pay a ransom fee. The scope of the incidents weren’t immediately clear.

The Russian-speaking gang has in recent weeks launched scores of attacks after discovering a vulnerability in MOVEit, a file-sharing software from Progress Software Corp.

Pricewaterhousecoopers in a statement confirmed it used MOVEit software, and that the hack ...