A threat actor has control over millions of smartphones distributed worldwide thanks to a piece of malware that has been preinstalled on the devices, Trend Micro warned. It has been known for several years that smartphones, particularly budget devices, may be shipped with shady firmware that can give companies or other entities access to user data. One of the best known operations involved Triada, an advanced trojan installed on Android devices whose existence came to light in 2016.
Since 20
