https://www.techradar.com/news/oneplus-6-has-a-serious-security-flaw-and-a-fix-is-on-the-way > The OnePlus 6 is a fantastic smartphone, but it also has a pretty serious security flaw, as discovered by an independent security researcher – a flaw that could give tech-savvy hackers unrestricted access to your phone, if they were given physical access to it. > As reported on XDA Developers, and first noticed by researcher Jason Donenfeld of Edge Security, the bootloader on the OnePlus 6 isn't as locked down as it should be – that's the part of the phone's built-in firmware that stops you replacing the OnePlus OS with whatever else you want to install instead.