Category Archives: Tips & Tricks

Serious problem/Bug on Mac OS High Sierra 10.13

Today I found a new “bug” on Mac OS High Sierra (10.13). This problem seriously affects to your privacy. What’s that?

When I try to change something from System Preferences, by clicking on the lock icon (on the bottom left corner), then unlock with this login info (User: root Password: left it blank). from here I can change every settings in the system.

Not only the above problem. When restarting the machine, a new “other user” will be displayed on the login screen. like this:














using “root” login info like above.. and then you are now logged in!!! holy shittt




We are still waiting for an official update from Apple to fix this issue. Or below is something you can do to reduce risky possibilities on your system.

To hide “other user” in Login screen, run this following command:

sudo defaults write /Library/Preferences/ SHOWOTHERUSERS_MANAGED -bool FALSE


but.. I believe the better way is to change the default root (administrator) password. check out this link:



Little Snitch: another Firewall for Mac

In MacOS, we have a default firewall which enable us to block incoming connections from the internet, Is this enough?

Sometimes what we need is to block both incoming and outgoing connections at the same time. How can we do this? It’s now pretty easy. LITTLE SNITCH is a brilliant choice can do it for you.

This is screenshot:

Screen Shot 2017-04-05 at 17.37.11

request to download it here: 

(please read the instruction carefully before installing)


Huy Nguyen.

How to play NES games on MacOS?

Hey wasuppp how are you doing guys? I know everything nice today =))

Today I have a look back to Nintendo Entertainment System (NES), some classic games that shaped my childhood, you know “Super mario”? Oh my godness! It’s really amazing that you can actually play most of them in Mac OS (We have another way to play on Windows too!).

The first thing we need to have is OpenEmu (, just go to the link and download it, decompress the archive then copy it to your Application folder on your Mac.

Open it! the appearance would be looks like this:

Screen Shot 2017-03-18 at 00.35.36.png

Next, now we simply find out NES ROMs from internet, for example, I got some ROMs here:

Now from the left side, we choose “Nintendo (NES)”, then drag & drop the downloaded ROMs that you would like to play from this emulator. Then what you can see can be like this after I drag SuperMario to the OpenEmu:

Screen Shot 2017-03-18 at 00.41.46.png

Finally, just double click on it and enjoy your games!