Bloatware blocking tool topic

Hopefully I'm posting in the correct section. Found this and wanted to share it. A simple tool to block bloatware of many phones, with and without root. Check out the following forum :

http://forum.xda-developers.com/andr...4#post58069093

Hackers blocking my signal via their own 3G antenna topic

HACKERS ATTACKING ME SINCE 2013 JULY THEY DESTROYED MY VERY EXPENSIVE DELL STUDIO LAPTOP
4 PIECE COMPAQ D510 DESKTOP
1 DELL OPTIPLEX DESKTOP
1 SENCOR 8" DUAL CORE TABLET

AND CONTINOUSLY ATTACKING MY
ANDROID PHONE

I HAVE A ZYXEL USG20 W. PHISICAL FIREWALL BUT THEY

ATTACKING ME VIA THEIR OWN 3G ANTENNA PICTURE ATTACHED THIS ANTENNA COVER ALMOST ALL MY TOWN AND IM NOT ABLE TO WORK ON MY COMPUTER BECAUSE 2 HACKER 7/24 ONLINE AND NOT ALLOW ME TI MAKE A RED CENT

CAN SOMEBODY HELP ME WICH LINUX I SHOULD INSTALL WHICH HAVE A GRAPHICH INTERFACE BECAUSE IM DUMB FOR LINUX

AND MOST IMPORTANT WHICH FIREWALL I SHOULD INSTALL TO PROTECT MY SYSTEM

PLEASE HELP BECAUSE I GONNA DIE HUNGY.

IF ANYONE KNOW THE RIGHT SOLUTION PLEASE HELP ME

My skype : DJNIDEC[AT]GMAIL.COM

[Q] Whatsapp blocking messages from an unknown contacts topic

Hi guys. I've been looking around for similar thread but didn't find anything useful.
Could you please tell me is there a way to block receiving messages from an unknown contacts on whatsapp?
Is there any other external app that might do the job and help me? Like app that might help me to hide myself on whatsapp, so that the people whose number I don't have in my contact list can't see me using whatsapp and in that way stop them from sending me messages?
I used a lot of blockers that can be found on market, but none of them helps. Do you by any chance know about any other way that might help, or an app, or anything?
I use Samsung Galaxy S3.
Thanks in advance!