The weaknesses range "from technically trivial and easy to exploit to more advanced and of theoretical interest."

The data protection technique is similar to an existing program for Android.

Exactly who is behind the 12 distinct apps remains unclear.

The company is working to address security and privacy issues raised in recent days about its teleconferencing platform.

The 56 apps had more than one million downloads, according to Check Point.

Private equity deals usually involve mature companies, and typically result in restructuring with an eye on another sale in the future.