Serious Discussion Cloud Antivirus vs. Traditional Antivirus — Which Actually Protects You Better in 2025? ☁️🛡️

[Bot]

In 2025, almost every antivirus relies on the cloud to some extent — but is cloud-first protection really safer than a traditional local engine?

Cloud AV (Examples: Webroot, Panda Dome, Microsoft Defender cloud lookups)​

Pros:

• Faster updates, real-time intelligence from millions of devices
• Smaller local footprint, lighter on system resources
• Can block zero-day threats before signatures exist

Cons:

• Needs an internet connection to be fully effective
• Raises privacy concerns — your files & metadata may be analyzed in the cloud
• Offline detection often weaker

Traditional AV (Examples: ESET, Kaspersky, older Bitdefender builds)​

Pros:

• Full protection even when offline
• Less dependent on external servers
• Users keep more control over their data

Cons:

• Larger updates, heavier on local resources
• Might miss fast-emerging threats compared to cloud-based AI
• Slower response to zero-days

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Debate Questions:​

• Is cloud-based AV the future of home security, or just another way to harvest user data?
• Would you trust a cloud-only AV if it scored well in tests?
• How much does offline protection really matter in 2025, when most users are always connected?
• Should vendors be more transparent about what data they upload for scanning?

What do you use — cloud-heavy or local-heavy antivirus — and why?

 

[KnownStormChaser]

It depends on how well the specific antivirus is developed. There are good and bad cloud and traditional antiviruses.

 

[Burbulator]

all antiviruses use cloud these days. For example, Kaspersky uses KSN Kaspersky Security Network | Kaspersky

 

[Parkinsond]

First we have to name "non-cloud" AVs.

 

[ForgottenSeer 94738]

I use Trend Micro. According to my information, it has basic offline detection and strong online detection.

 

[anirbandutta01]

I use ESET ( and sometimes Kaspersky ) both have strong online & offline detection.

 

[lostpass]

I'm using Bunifu Sniper.

 

[Parkinsond]

I'm using Bunifu Sniper.

breaking bad

 

[Shadowra]

All antivirus programs have integrated cloud and AI machine learning modules.

The first to integrate a cloud solution was Panda Security for its free Panda Cloud antivirus (now Panda Dome), which was revolutionary at the time because when the publisher pushed information to its servers, everyone was protected at the same time.
However, threats have evolved, as we saw when Emotet malware wreaked havoc in 2015/2016.

That's when Microsoft released AI Machine Learning in 2016, which was devilishly effective against the Emotet Trojan because each sample was detected immediately.
Now, all antivirus programs have integrated it, keeping pace with the evolution of cybercriminal threats.

 

[piquiteco]

I'm using Bunifu Sniper.

Spoiler: Sniper

 

[Parkinsond]

The first to integrate a cloud solution was Panda Security for its free Panda Cloud antivirus

Being the first does not always mean you end up being the best

 

[Shadowra]

Being the first does not always mean you end up being the best

Panda now

Spoiler: :p

 

[piquiteco]

Panda now

Panda Cloud, when it was launched at the time, was very efficient, but it hasn't been able to keep up with the evolution of malware and the constant threats that arise. It's a shame, because it's a very lightweight AV. And it would be nice if it were still effective today, because we would have another alternative to choose from among the popular AVs such as K,B, Norton, Mcafee, Avast, AVG and others.

 

[Parkinsond]

Panda Cloud, when it was launched at the time, was very efficient, but it hasn't been able to keep up with the evolution of malware and the constant threats that arise. It's a shame, because it's a very lightweight AV. And it would be nice if it were still effective today, because we would have another alternative to choose from among the popular AVs such as K,B, Norton, Mcafee, Avast, AVG and others.

Panda needs to make some changes, and it is recommended to start with the name.

 

[Trident]

The first to integrate a cloud solution was Panda Security for its free Panda Cloud antivirus (now Panda Dome), which was revolutionary at the time because when the publisher pushed information to its servers, everyone was protected at the same time.

They integrated it before that, I think around 2006-2007 they started the Collective Intelligence and around 2008 was the cloud antivirus. The Cloud Antivirus completely removed the local database with a *
*offline hashes are still kept in a database and updated.

 

[cartaphilus]

Wasn't there a Panda Nano version that you can run off their website?

 

[Trident]

Wasn't there a Panda Nano version that you can run off their website?

No idea. I know the cloud architecture internally was called Nano.

 

[cartaphilus]

No idea. I know the cloud architecture internally was called Nano.

Found it: It was called NANOSCAN and it ran off ACTIVEX

The site I found it on gave me advertising cancer so use an adblocker.

Panda launches beta NanoScan, online scanner for malware - Financial Mirror

Panda Software has launched the beta version of its new online scanner: NanoScan. This powerful application detects all active malware hiding in critical areas of a computer in less than 60 seconds. The NanoScan beta version is available free and detects over 600,000 samples of known malware and...

www.financialmirror.com

 

[piquiteco]

*offline hashes are still kept in a database and updated.

Please answer a question for me. Why do many AVs, even though they claim to use the cloud in their products, still update their database signatures? This is the case with Bitdefender, which updates every hour. I understand that updating the database is for detection when the AV is offline. That would be the most plausible explanation when offline, or is there another explanation?

 

[Trident]

Please answer a question for me. Why do many AVs, even though they claim to use the cloud in their products, still update their database signatures? This is the case with Bitdefender, which updates every hour. I understand that updating the database is for detection when the AV is offline. That would be the most plausible explanation when offline, or is there another explanation?

It's to reduce the cloud workload as well, and for offline detection. They give you the "quick wins" of malware detection locally and only when that's not enough, they query the cloud. Otherwise this is way too expensive.