Antivirus is the OG of cybersecurity—good, but best when used with EDR to fill in the gaps. It works like a bouncer at a club, checking IDs (signatures) against a list of known bad guys (malware). If it doesn’t see a match, it lets them in.

What antivirus brings to the table:

• Signature-based detection (aka “Hey, I’ve seen this virus before!”)

• Real-time scanning for known threats

• Minimal behavioral analysis—if it walks like a duck but doesn’t quack, antivirus might miss it

The problem? The volume, velocity, and variety of malware are huge. Cybercriminals create a ton of malware variants and rely on living-off-the-land attacks (aka LOLBins) that blow right past traditional antivirus.

EDR not only looks for known threats, but it watches how programs behave, too, spotting the weird moves hackers make before they strike. Think of it like a security camera that not only records but also predicts when someone’s about to break in and calls the cops before they do.

Why EDR is stronger and smarter

• Real-time monitoring: Always watching, with machine intelligence and human expertise working together to catch threats as they emerge

• Behavioral analysis: Detects threats by what they do, not just what they are

• Threat intelligence: Knows the latest about attackers and threats

• Automated response: Isolates threats before they wreak havoc

• Forensics and threat hunting: Helps when investigating attacks and strengthening defenses

So, what is the difference between EDR and antivirus when cybercriminals are using stealth tactics, zero-day exploits, and fileless attacks? Is a simple bouncer enough to protect your business, or do you need a full-blown security squad? Which one should you rely on? Let’s break it down.

Knowing when to use EDR vs antivirus shouldn’t be about picking one over the other.  It’s about recognizing that antivirus alone can’t cover it all. That means, in today’s world, it’s not AV or EDR, it’s both. And for many organizations, Managed EDR takes it a step further by combining tech with human expertise for 24/7 threat monitoring and response. 

The global average cost of a data breach reached $4.45 million in 2023, marking a 15% increase over the previous three years. When it comes to EDR vs antivirus pros and cons, it’s not even a fair fight. But still, let’s highlight some of the pros and cons of each:

AV pros:

✔️ Affordable and easy to install

✔️ Low resource usage

✔️ Good for basic protection

AV cons:

✖️ Struggles against advanced threats

✖️ Limited visibility into attacks

✖️ Reactive instead of proactive

EDR pros:

✔️ Catches threats before they do damage

✔️ Full attack visibility and forensics

✔️ Integrates with other security solutions

EDR cons:

✖️ More expensive upfront

✖️ Requires skilled security personnel to manage

✖️ Can generate alert fatigue if not tuned properly

Hackers aren’t just throwing viruses at your system anymore. They’re slipping in through backdoors, hiding in legit-looking software, and using your own tools against you. Here’s why antivirus alone doesn’t work anymore:

• Zero-day exploits: Zero-day exploits are unknown and can sneak past AV undetected.

• Fileless malware attacks: Threat actors use legitimate, existing tools to target victims, rather than malicious files. 

• Lateral movement: Once inside, attackers move around undetected. AV won’t spot this.

Short answer: not exactly. You still need strong malware protection. 

Most modern EDR solutions bundle in antivirus-like features, covering both signature-based detection and advanced behavior analysis. That means you get the best of both worlds—traditional malware protection plus next-level threat detection and response.

However, it’s important to note that many compliance standards, like PCI DSS v4.0 still require antivirus or anti-malware protection as part of a complete endpoint security program. 

Bottom line: EDR doesn’t replace antivirus, but builds on it.

If your business just needs basic protection and the budget is tight, antivirus will get the job done—until it doesn’t. But if you’re serious about security and want a defense system that can catch modern threats and attacks, EDR is the way to go.

Threats can seem overwhelming, but with our in-depth understanding of how threat actors think, we know what to look for. Huntress gives you fully managed endpoint detection and response (EDR), so you've got 24/7 support from security experts ready to respond to threats.

If you’re ready to move beyond basic protection, book a demo with Huntress.