So [Oliver] set out to use a microcontroller to brute-force the EFI PIN. You can read his back story at the link above. He had the chance to enter a 4-digit pin before the format process.

Every smartphone user should have a lock screen password/PIN/pattern set. If you don’t, stop reading now and set one up. Seriously. Set it up now. I cannot tell you how many times I have been ...

If you have a SIM card PIN enabled on your phone to access data on the SIM card, but you repeatedly enter it incorrectly, the SIM card may lock you out from further attempts. You can reset the SIM ...

But if you prefer the ease of using a PIN, switching to a six-digit PIN is a smart move. Here's how to set it up on an Android phone. Open the Settings app on your phone. Go to Security > Screen Lock.

Past studies have revealed the most common PIN numbers, and it's clear that a six digit PIN like "123456" is going to be easier for an attacker to crack than a truly randomly-generated code.

If your smart lock is connected to a voice assistant, be sure to use a PIN to unlock it with voice commands. It's a stretch, but it is possible to create workarounds with IFTTT to avoid using the PIN.

If you attempt to do a SIM PIN Lock, and you fail to guess the original PIN, the SIM will be locked with the PUK. If you run into this situation, you’ll most likely have to log into your mobile ...