Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Keeping your iPhone or Android device secure is a no-brainer.

Researchers at security company ESET have found a type of malware that changes an Android device’s PIN, the first of its kind in an ever-evolving landscape of ransomware attacks. For most users, the ...

A new type of banking malware is targeting Android users. DoubleLocker, a Trojan that can encrypt data on devices, locks victims out of their smartphones by altering PIN codes - to re-gain access, ...

Update, May 26, 2025: This story, originally published May 24, has been updated with a brief history of PIN codes, information regarding the most secure codes you can use and why 8068 really isn’t the ...

Android: Four-digit PIN codes for your Android lock screen may not be enough security, depending on your situation. TimePIN changes the PIN code dynamically to make it harder for someone to gain ...

If you forget your Android phone password, don’t worry—you can still access your device. This guide explores whether a universal unlock pin or pattern exists for Android devices and offers ways to ...

The Chameleon Android banking trojan has re-emerged with a new version that uses a tricky technique to take over devices — disable fingerprint and face unlock to steal device PINs. It does this by ...

Google has introduced a new way for Android users to protect crucial files like ID documents, particularly in developing countries where devices are often shared. Called “Safe Folder” and located in ...

A few days ago, my colleague Calvin shared an interesting fact about GrapheneOS: The custom ROM allows him to set a duress PIN that completely erases the phone when he enters it, including encryption ...