There s free antivirus out there, there s a valid serial number and things like that, and it s going

First under the 360 security guard, the search is very fast, only a few hundred kb, you can uninstall rogue software. Then install it and click on Virus Scanner, **Kaspersky, he will send you a serial number, which can be upgraded for half a year, and will be saved to the desktop, Kaspersky's best antivirus software in the world! Half a year later, uninstall the guard and reinstall it, and you can get another one!

I bought the D version, and the one I bought had four types of antivirus software.

Bitdefender. The world's No. 1 antivirus.

Bitdefender never advertises or publicizes, but it is well known abroad. The world has passed VB100 the most, the miskill rate is 0, with the world's largest virus database, the response time of the new virus is only 1 hour, although it is a foreign killing soft, but the domestic virus grasp is more than 360, Jinshan and other domestic killing soft (it is really the sadness of the Chinese people).

Seven major kills: the detection and killing ability is low, the virus database is not as large as Bitdefender, and the accidental killing rate is very low, but the price is that the real virus is often missed, so the total poisoning of An360, my computer is. There are many "cyber gunners", so they are famous, so they are not recommended.

2.Rising garbage one, high manslaughter rate, even out look killing, big, drag the system, and incapable.

3.Kingsoft failed to pass VB100 by one virus.

4.Kaspersky will hardly miss kills, and the price is that all the normal ones are killed as viruses, and it is better to kill a thousand by mistake than to miss one. Super drag system, if you use it, you will regret it!!

It's a free killing software developed by Microsoft.,You can only use it if you're a genuine Windows user.。

It's not Norton, Norton is nowhere near as good as NOD32! Don't mess around! NOD32 is second only to Bitdefender.

Recommended for Bitdefender 2010.

2011There are no new features,The difference with 2010 is that the interface is different,The virus database is the same,The world's largest,Now Bitdefender official provides both versions for choice at the same time (Bitdefender official is really intimate),2011The interface is too professional,General users can't understand。

Step 2: Click the "2010 Chinese Version" button corresponding to the 32-bit page (if you are a 64-bit processor, click the corresponding button for 64-bit).

How to see which digit the computer is: know).

Step 4: Install the anti-soft, prompt to restart after installation, do not restart at this time, open the registration tool, and the automatic decryption will be completed immediately.

Well, congratulations! You can use the world's best antivirus!

I hope you can accept my answer, thank you.

1. No need to purchase, renew or activate. Install once and use forever.

2. The original "quad-core engine" anti-virus technology has a far superior ability to detect and remove viruses than similar software.

4. It is currently the most "lightweight" antivirus software, and the memory occupation is only about 6M during monitoring. It's lower than the average software.

5. The interface is refreshing, the setting and operation are simple, and it is the favorite of rookie users.

6. The innovative "Game Anti-Disturb Mode" allows players to run the game safely and smoothly.

7. Apply the "cloud security whitelist" technology to prevent false positives and accidental killing of normal files.

8. The "embedded anti-virus technology" tailored for domestic users can easily and efficiently protect the files transferred on QQ and MSN, as well as the files on U disks and mobile hard disks from being invaded by viruses.

9. The "cloud scanner" technology can quickly locate unknown and suspicious files in the user's machine, and it only takes 10 minutes to analyze and process, which can prevent the intrusion of "new Trojans".

10. Dozens of upgrades per day, so that users can get security updates as soon as possible. The quality of service is not inferior to similar paid software.

It is recommended that you install it.

No one dares to say which antivirus software is the best, but domestic users now have a lot of choices, Kingsoft is free, Rising is free, and 360, but it is a cow, quite a lot of choices.

The average ordinary user uses 360, if there is a special requirement, then use Kapaski, the killing effect is good.

In fact, it is not said that it is the best, everyone has their own antivirus software. But seeing you ask, you probably don't know much about antivirus software?!! Then it's good to use 360 (although I haven't liked it, there are too many scandals), it's foolish enough, and you don't need to worry about it if it's installed.

It's too much to give a bounty of 0 points first.

I think it's Kaspersky Antivirus.

There are a lot of antivirus software, free 360, Kingsoft Poison and the like.

I think it's good to use eset.