For Linux-based operating systems, especially Android, bootloaders are more like a double-edged sword. On one hand, you’d want an unlocked one, because that will enable opening up your device to all sorts of modifications, including gaining root/super user access, but at the same time, an unlocked bootloader also means a potentially vulnerable smartphone or tablet that’s open to malicious attacks. With the amount of new apps that the Play Store gets on a daily basis, it’s also hard to figure out whether an app is truly what it claims to be, or some developer with the intent of stealing your personal information that’s unleashed a Trojan horse in the guise of an otherwise-innocent-looking application. Thus, the risk of remaining exposed stays lingering above you.