NavaShield

NavaShield is a rogue antivirus that is classified as malware and nagware.

Why It Sucks

 * 1) It is a rogue antivirus, meaning it’s a virus.
 * 2) Part of its payload is bullshit, one example is when it abuses Microsoft’s TTS voice to say random things, or even swear at the user.
 * 3) When installed, if you use the internet, it sets your homepage to porn sites! LET THAT SINK IN!
 * 4) Certain versions of NavaShield expands an alert that says it's deleting the hard drive, and it keeps making a beep, such can come off annoying.
 * 5) After a week's time, it will begin to pester you into buying the full version.  Thing is, the servers are apparently down as of 2013, so good luck trying to use your registration key!
 * 6) It blocks you from task manager.

Removal

 * It can be easily removed using software like Malwarebytes.