The Chinese have a new tool called Massistant.

• Massistant is the presumed successor to Chinese forensics tool, “MFSocket”, reported in 2019 and attributed to publicly traded cybersecurity company, Meiya Pico.
• The forensics tool works in tandem with a corresponding desktop software.
• Massistant gains access to device GPS location data, SMS messages, images, audio, contacts and phone services.
• Meiya Pico maintains partnerships with domestic and international law enforcement partners, both as a surveillance hardware and software provider, as well as through training programs for law enforcement personnel.

From a news article:

The good news, per Balaam, is that Massistant leaves evidence of its compromise on the seized device, meaning users can potentially identify and delete the malware, either because the hacking tool appears as an app, or can be found and deleted using more sophisticated tools such as the Android Debug Bridge, a command line tool that lets a user connect to a device through their computer.

The bad news is that at the time of installing Massistant, the damage is done, and authorities already have the person’s data.

Slashdot thread.