Essential EDR for Modern Businesses: The Latest in Ransomware Defense

Last Updated on 2025-05-29by Kohei Otsuka

“I think I’m taking security measures, but I’m not sure if they’re really safe.” We hear this from many customers. Recently, there are an increasing number of cases where antivirus software alone is not enough, and EDR (Endpoint Detection and Response) in particular is attracting attention. Cyber attacks are becoming more sophisticated every day, and there are an increasing number of threats that cannot be prevented by traditional antivirus alone. EDR (Endpoint Detection and Response) is a solution that continuously monitors endpoints (PCs, servers, mobile devices, etc.) and detects and responds to suspicious behavior.

■ What is EDR?

EDR is a security solution that monitors and records suspicious behavior occurring on endpoints (PCs, servers, etc.) and responds in real time.

It is difficult to detect with conventional antivirus software.

Ransomware
Targeted attacks
Fileless attacks

It is also characterized by its ability to handle the above attacks.

■ Benefits of introducing EDR

Real-time detection and immediate response
- This can prevent the damage from spreading after infection. Also, only the infected PC is blocked from the network, so the virus does not infect other devices.
Investigating the cause of log accumulation
- Accurately understand the attack route and scope of impact.
Strong in the era of teleworking
- Supports on-premise and cloud, protecting devices outside the site as well.

■ Recommended for these customers

I’m worried about relying too much on traditional antivirus software
Many people work remotely, making device management complicated
I want to outsource incident response or reduce my internal load
Urgent need to respond to regulations and strengthen compliance

Traditional Antivirus vs. EDR

Comparison items	Traditional Antivirus	EDR
Detection Method	Signature-based (known malware)	Behavior-based + AI + heuristic analysis
Zero-day protection	Weak (weak against unknown threats)	Strong (suspicious behavior detected)
Coverage	File-level malware detection	System-wide behavior analysis (processes, communications, registry, etc.)
Post-processing	Basically, just delete and quarantine	Multi-stage response including automatic isolation, forensic log collection, and containment
Log and trail recording	Minimal (even if there is any, it is difficult to check after deletion)	Maintains detailed timeline logs (visualizes attack paths)
Collaboration with external threat information	None or limited	TI (Threat Intelligence) integration available
Remote Support	limited	All devices can be remotely monitored and handled via the Internet
operational load	Lightweight but low detection power	High functionality
cost	Inexpensive (popular among small and medium-sized businesses)	Medium price * Cheaper prices available depending on the provider

EDR’s strength is its defense and response capabilities under the assumption that an attack will occur. Traditional AV focuses on “prevention” and is low cost, but EDR enables practical responses to cyber attacks.

For companies considering implementing EDR: We also provide free consultations, estimates, and PoC (evaluation implementation). Please feel free to contact us.