Worst Antivirus Programs

These antivirus companies are so bad, your computer will throw up!

The Top Ten

1 PC Optimizer Pro

It's fake. Don't waste your money on the "full version". - Target

Gains viruses

PC Optimizer Pro is just another shady "PC cleaner"�"not an antivirus product.

2 SpySheriff

SpySheriff is malware that's impossible to remove. Your computer won't like it. - Target

This is old, and it wasn't even legitimate at all.

3 Symantec

Very good at annoying, slowing down PC and deleting non-infected files. Its capability of catching real viruses lies probably in deleting and blocking everything, which is not in an exception list. Got rid of it.

Norton used to be awful, but Symantec has improved a bit.

"This antivirus is the best! It destroyed my computer! I love wasting $50 on a basic package! "
Oops, sorry for being sarcastic. Symantec is freaky, horrible, and unlovable. - Target

Norton crashed itself... then my computer.
Thanks, Norton. You are the worst antivirus ever.

4 Antivirus 360
5 Webroot

Lol another dumbass who probably never even tried it

It isn't great as far as detection rates go, but it's good for older PCs.

6 McAfee

The slowest antivirus ever?

Slows down performance, and generates lots of fake alerts.

Poor Performance! Slow and need enough system resources.

Absolutely dreadful, bothersome, system drain. A compelte waste of time and money

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7 Virus Shield
8 SpyHunter 4
9 Microsoft Security Essentials

You may as well just have no antivirus at all.

Bestestestest security system I ever didn't see. please don't use this it is very bad

Patch - yes please. Crack - yes please. File.exe - yes please.
Our computer needs it!

-Microsoft Security Essentials 2017

10 Norton

It is slowing down my computer, specially email access to server.

How is this not #1 - Easahby

Doesn't even have a 50% detection ratio

Iam a computer tech of 25 years...Nortons is worse than a virus, never believe these liars.

The Newcomers

? Eset

Worst Antivirus in the market

? BitDefender

It's the best antivirus

The Contenders

11 Avast Antivirus

Avoid - one of the worst AV packages out there: it lures users that are not that technically minded with price - 0. Unfortunately protection offered by Avast is equal to the amount of money it costs. Had to many cases where oblivious friends installed this malware and afterwards came crying to me asking for help.


How is this here please remove it


V 5 Comments
12 MalwareBytes MalwareBytes Malwarebytes Inc. is an American Internet security company with offices in Santa Clara, California, Clearwater, Florida, Tallinn, Estonia and Cork, Ireland.

Whoever put this on is dumb. Malwarebytes is actually one of the best

Stop already! I don't understand why this is so overrated! - Target

13 Protogent

I am Proto, your security is my motto! - Fullwalking2

Can't even rhyme

Why is this not #1

aNgRy BoSs

V 2 Comments
14 Stop Sign Antivirus
15 AVG Antivirus

Piece of Crap


16 Windows Defender

Wont detect anything

Utterly pointless.

17 TotalAV
18 Kaspersky

That tool, that will randomly use 99% of the available computing power even though you configured it to only run while idle.

Probably a connection to Russian servers, Yes that might just be true.

19 CCleaner
20 Bytefence

This is the worst antivirus program in my opinion it just goes bundled with other software programs and when you completely remove bytefence its still there it is so hard to remove this antivirus and it just downloads itself without your permission it also popups while your using the program it came with and if it's a screen recorder it will be so hard to remove bytefence you need to go to task manager and end task WHO HAS TIME TO DO THAT when your using a screen recorder to record your gameplay

People have been having issues with Minecraft because of ByteFence. - allamassal

21 MacKeeper


Puts adware in computer. definitely avoid

22 PC Cleaner
23 Advanced System Care

It's fake. Nothing to tell about it. But one thing-"It completes full system scan just in10 seconds."

What fake about it? its not fake, Its not an antivirus, it doesn't say it is, it is what it says Advanced System Care
its not fake its very effective and useful to keep your system clean and fluent. It has very good features, unlike that idiotic TuneUp Uttilities which simply brakes your system

24 Smadav

The worst

25 Comodo
26 RegClean Pro

Potentially unwanted software disguised as a PC optimizing program. - WindWakerFan

27 Sophos Anti-Virus

Do you want some free vbuck--- I mea, I mean free Memz virus that it will not remove? I definitely do 21/21 ez software no risk, no pc slowdown, no minecarft n fornight laggi b--b--b-b-bai...

28 Adaware
29 SUPERAntiSpyware

Does not detect anything
Slows down computer

30 Winzip Malware Protector
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