Cybersecurity

SentinelOne vs Traditional Antivirus: What's Changed

20 October 2025 · 0x1m3 · 6 min read

The antivirus software that protected your business five years ago was built for a different threat landscape. Attackers have moved on. The question is whether your defences have moved with them.

This is not a theoretical debate. South African businesses face ransomware, fileless attacks, and zero-day exploits daily. Traditional antivirus misses these threats by design. SentinelOne was built to catch them.

Here is what has changed — and what it means for your security budget.

The Core Difference: Signatures vs Behaviour

Traditional antivirus relies on signature-based detection. Every known piece of malware has a unique digital fingerprint. Your antivirus downloads a database of these fingerprints and scans files against it. If a file matches, it gets blocked.

The flaw is obvious: if the malware is new, modified, or fileless, there is no signature to match.

SentinelOne uses behavioural AI instead. Rather than asking "does this file match a known threat?", it asks "is this process behaving like a threat?" It monitors every action on your endpoints in real time — file modifications, network connections, registry changes, process spawning — and responds to malicious behaviour patterns, not static signatures.

<div style="background: #F5F5F5; border-left: 4px solid #2E5090; padding: 24px; margin: 24px 0; border-radius: 4px;"> <div style="font-size: 32px; font-weight: bold; color: #1B2A4A; animation: fadeInUp 0.6s ease-out;">5 consecutive years</div> <div style="color: #333; margin-top: 8px;">SentinelOne has been recognised as a Leader in the Gartner Magic Quadrant for Endpoint Protection Platforms — every year since 2021.</div> </div>

Head-to-Head Comparison

Capability	Traditional Antivirus	SentinelOne
Detection method	Signature matching	Behavioural AI + static AI
Zero-day protection	None until signature released	Detects by behaviour — day zero
Fileless attack detection	Limited or none	Full behavioural monitoring
Response speed	Manual quarantine, hours	Autonomous response, seconds
Ransomware rollback	Not available	1-click file restoration
Attack reconstruction	Basic logs at best	Full Storyline attack narrative
Offline protection	Requires signature updates	On-device AI, fully offline
Cloud workload support	Desktop/server only	Windows, macOS, Linux, Kubernetes
MITRE ATT&CK performance	Varies widely	Consistently top-rated, zero delays
Management model	Per-device, local console	Cloud-native, multi-tenant

The comparison is not subtle. Traditional antivirus was designed for known, file-based threats on Windows desktops. SentinelOne was built for the modern attack surface — cloud workloads, remote endpoints, and threats that have never been seen before.

What SentinelOne Does That Antivirus Cannot

Autonomous Response

When SentinelOne detects a threat, it acts immediately. It kills the malicious process, quarantines affected files, and contains the endpoint — all without waiting for a human analyst. Mean time to respond (MTTR) drops from hours to seconds.

For South African businesses without a 24/7 Security Operations Centre (SOC), this is the difference between a contained incident and a full-scale breach.

Ransomware Rollback

SentinelOne's patented rollback capability reverses ransomware encryption by restoring files to their pre-attack state. Attackers encrypt your files; SentinelOne restores them automatically.

No other endpoint protection platform offers this. It is the feature that removes the ransom payment from the equation entirely.

Storyline Technology

Every security event on your endpoints is automatically connected into a complete attack narrative. SentinelOne links processes, file changes, network connections, and registry modifications into a single timeline. Your IT team sees the full scope of an incident without manual investigation.

This is essential for POPIA compliance reporting and post-incident analysis.

Purple AI

SentinelOne's Purple AI is an AI-powered security analyst built into the platform. Security teams can query their threat data using natural language — no complex query syntax required. It acts as a force multiplier for resource-constrained IT teams, turning hours of investigation into minutes.

<div style="background: #F5F5F5; border-left: 4px solid #2E5090; padding: 24px; margin: 24px 0; border-radius: 4px;"> <div style="font-size: 32px; font-weight: bold; color: #1B2A4A; animation: fadeInUp 0.6s ease-out;">Seconds, not hours</div> <div style="color: #333; margin-top: 8px;">SentinelOne's autonomous response contains threats in seconds — without waiting for human intervention. Traditional antivirus requires manual triage that takes hours.</div> </div>

SentinelOne Pricing: What It Actually Costs

SentinelOne offers three main tiers for businesses:

Tier	What You Get	Price (per endpoint/year)
Singularity Core	Prevention, detection, basic EDR	$69.99
Singularity Control	+ Device control, firewall management, rogue device discovery	$79.99
Singularity Complete	+ Full EDR, Storyline, automated response, AI security assistant	$179.99

Volume discounts apply at 500+ endpoints — typically 15 to 25 percent off list price. Multi-year contracts save an additional 10 to 15 percent.

For most South African businesses, Singularity Complete is the tier that delivers the full SentinelOne vs antivirus comparison advantage: autonomous response, Storyline attack reconstruction, and the AI assistant that replaces the need for a dedicated SOC analyst.

OAS delivers SentinelOne through its N-able MSSP partnership, which means managed deployment, monitoring, and response are included — not just a software licence.

<div style="background: #F5F5F5; border-left: 4px solid #2E5090; padding: 24px; margin: 24px 0; border-radius: 4px;"> <div style="font-size: 32px; font-weight: bold; color: #1B2A4A; animation: fadeInUp 0.6s ease-out;">$179.99/endpoint/year</div> <div style="color: #333; margin-top: 8px;">Singularity Complete delivers full EDR, autonomous response, Storyline, and AI-powered threat hunting. Volume discounts available for 500+ endpoints.</div> </div>

Who Should Make the Switch

If any of these apply to your organisation, traditional antivirus is no longer sufficient:

- You handle personal data subject to POPIA - You have remote or hybrid workers outside your office network - You have experienced a ransomware attempt in the past 24 months - Your IT team is too small to monitor alerts around the clock - You run workloads on cloud infrastructure (Azure, AWS) - You operate in financial services, healthcare, or legal — high-value targets

How OAS Makes the Transition Seamless

OAS has deployed SentinelOne across South African businesses for years as part of our Three Pillar Managed Security framework — Protect, Detect, Recover.

The transition from traditional antivirus to SentinelOne EDR is straightforward. OAS handles the migration: deploying agents, configuring policies, decommissioning legacy antivirus, and tuning detection to your environment. Most deployments complete within days, not weeks.

With over 40 years as a trusted partner to SA businesses, OAS provides the expertise that turns a software upgrade into a genuine security transformation.

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Still running traditional antivirus? Every day without EDR is a day your endpoints cannot defend themselves against modern threats. OAS can show you exactly what you are missing.

Get a Free Endpoint Security Assessment →

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