For years, we recommended traditional antivirus solutions to our clients. They were affordable, familiar, and “good enough.” Then we started seeing attacks that sailed right through signature-based detection, and we had to rethink everything.
The Incident That Changed Our Mind
Last year, one of our managed services clients — a 40-person accounting firm — got hit with a fileless malware attack. Their traditional AV didn’t flag anything because there was no malicious file to scan. The attack lived entirely in memory, using PowerShell scripts to exfiltrate data. We caught it through network anomaly monitoring, but it was a wake-up call.
What Makes EDR Different
Endpoint Detection and Response (EDR) doesn’t just scan files — it monitors behavior. When a process starts encrypting files rapidly, when PowerShell executes encoded commands at 2 AM, when a user account suddenly accesses 500 files it’s never touched before — EDR catches the pattern, not just the payload.
SentinelOne, specifically, uses AI models trained on millions of attack patterns. It can detect and respond to threats in milliseconds, often before the attack completes its first stage. And crucially, it can roll back changes — if ransomware encrypts files, SentinelOne can restore them from its behavioral snapshots.
The Migration Experience
Rolling out SentinelOne across our client base was smoother than expected. The agent is lightweight (unlike some EDR tools that tank system performance), deployment took about 30 minutes per endpoint via our RMM tool, and the management console is genuinely intuitive.
The first week was noisy — lots of alerts as the AI learned what “normal” looked like for each environment. By week two, false positives dropped to near-zero, and we were getting clean, actionable alerts only when something genuinely suspicious happened.
Results After 6 Months
- Threats blocked: 47 across our client base (12 of which would have bypassed traditional AV)
- Mean detection time: under 30 seconds (vs. hours or days with signature-based AV)
- Rollback used: twice (both ransomware attempts, fully recovered in under 5 minutes)
- Performance impact: negligible — clients didn’t notice the switch
Cost Comparison
Yes, EDR costs more than traditional antivirus. SentinelOne Complete runs about S$16.50/endpoint/month, compared to S$3-5 for basic AV. But when you factor in the cost of a single successful attack — data breach notification, business disruption, reputation damage, potential PDPA fines — the math isn’t even close.
For companies that want the protection but don’t have a security team to manage it, managed security services (MSSP) bundle SentinelOne with 24/7 monitoring and incident response. You get enterprise-grade security without hiring a SOC team.
Who Should Switch
If your company handles sensitive data (financial, healthcare, personal data under PDPA), still relies on signature-based antivirus, or has employees working remotely on unmanaged networks — it’s time. The threat landscape has evolved past what traditional AV can handle.
