ES File Explorer is a popular file explorer app for Android. Even though it is proprietary, I must admit, that I came in touch with it too some years ago.
As Techcrunch reports, a security researcher now detected a backdoor in the app, which allows users on the same local area network as the victim to access the contents of the phone.
This example shows, how important it is to have free software, which can be audited by everyone.
@vanitasvitae I recall the name. I might have used it as well at some point 😮
so useful thank you