// CYBERSECURITY · SOUTH AFRICA

Cybersecurity for SA SMBs, actual engineering, not antivirus.

Modern endpoint detection, SIEM, email security, phishing training, verified backups, and an incident response plan. Built for South African SMBs between 10 and 200 staff who hold customer data they can't afford to lose.

SMBs are now the primary target of cybercrime in South Africa.

The era of "we're too small for anyone to care about us" is over. South African SMBs are now the most attacked segment because the economics work for attackers: small businesses hold meaningful amounts of personal and financial data, usually have minimal security investment, and are more likely to pay ransoms quickly because they can't operate for a week without their systems.

The Dis-Chem breach exposed 3.6 million customer records through a third-party vendor. GPAA was hit with LockBit ransomware. Cell C notified affected customers and the Information Regulator after a 2025 breach. These are the ones that made the news; most SMB breaches never get published, because the business just quietly pays or quietly restores from backup and hopes nobody noticed.

What's changed in 2026 is both the threat and the law. Attackers run as businesses now, ransomware-as-a-service, initial access brokers selling stolen credentials, and intruders who often go undetected inside compromised networks for weeks or months. And the Information Regulator has started actively enforcing breach notification requirements, with fines for both the breach and the failure to notify in time. Underinvestment in cybersecurity has stopped being cheap.

The baseline every SA SMB should have in place.

This is the minimum we'd want to see at any client, not a premium tier, just the floor. If anything on this list isn't in place at your business right now, that's where to start.

Identity and access

  • Multi-factor authentication (MFA) enforced on every account, every service. Not just email, line-of-business apps, cloud consoles, VPN, admin accounts. MFA alone stops the large majority of automated account compromise attempts.
  • Conditional access policies on Microsoft 365*: block legacy authentication, require compliant devices, geo-fence sign-ins to the countries you actually work from.
  • Access reviews every quarter, who has admin access to what, is that still appropriate, has anyone left and still has access to systems.

Endpoint protection

  • Endpoint Detection and Response (EDR) instead of traditional signature-based antivirus. Microsoft Defender for Business* (bundled with M365 Business Premium at no extra cost), CrowdStrike Falcon*, or Sophos Intercept X* depending on your scale and needs.
  • EDR agents on every endpoint, workstations, laptops, servers. BYOD devices either blocked or enrolled.
  • Patch management on a monthly cycle, security patches within 72 hours for critical CVEs.

Email and web filtering

  • Email security filtering (Microsoft Defender for Office 365*, Mimecast*, or Proofpoint*), phishing, malware, impersonation protection.
  • SPF, DKIM, DMARC properly configured on your sending domains to stop impersonation of your business.
  • DNS filtering (Cloudflare Zero Trust*, Cisco Umbrella*) to block known-malicious domains at the DNS level.

Backup and recovery

  • 3-2-1 backups: 3 copies of your data, on 2 different storage types, with 1 off-site copy that ransomware can't reach.
  • Monthly restore testing, because "we have backups" and "we have working backups" aren't the same thing.
  • M365 and Google Workspace* backup to an immutable third-party target (your cloud provider's native retention is not a backup)

Visibility and monitoring

  • SIEM aggregating logs from firewall, endpoints, M365, and servers in one place. Alerts on suspicious patterns before they become incidents.
  • Real-time alerting on: unusual sign-in locations, mass file access, elevated privilege escalations, EDR detections, firewall anomalies.
  • Weekly review of alerts that didn't fire, to tune the system; monthly review of what did.

People and process

  • Quarterly phishing simulation campaigns, because the user is still the attack surface most incidents walk through.
  • Annual security awareness training, mandatory for everyone.
  • Written incident response plan (one to three pages), rehearsed at least once a year.
  • Vendor risk assessment for third parties with access to your systems or data.

What a cybersecurity engagement with us looks like.

We don't sell a product. We sell a programme that gets your business to a defensible baseline and keeps you there.

Phase 1: Posture review (2 weeks)

We audit your current state against the baseline above. You get a one-page scorecard (red / amber / green per domain), a prioritised fix list with time and cost estimates, and a short written report that an executive can read in 10 minutes.

Phase 2: Remediate (4-8 weeks)

Fix the obvious gaps. MFA rollout, EDR deployment, backup configuration, DMARC enforcement, SIEM deployment. Each item has a defined scope and cost upfront, no cost-plus billing.

Phase 3: Operate (ongoing)

Managed cybersecurity as part of your monthly service: incident response during business hours (Mon–Fri 09:00–16:00 SAST) with 15-minute P1 response, quarterly posture reviews, phishing training programme, patch management, access reviews. 24/7 automated monitoring (including SIEM monitoring) is available as a separately-priced add-on. If a client wants cybersecurity as a standalone service without full managed IT, we offer that too.

Already in trouble?

If you've just discovered a breach, or you have strong reason to think you're compromised right now, phone us: +27 65 933 9750. Don't email, we check email in batches. The first few hours after a breach matter more than almost anything else that happens afterwards.

What to do before you call: don't wipe anything. Don't restore from backup yet. Don't tell staff to "just use their personal email for now." Preserve the evidence. Isolate affected systems from the network if you can do that safely. Make a note of exactly what you know and when you noticed it. We'll take it from there.

Frequently asked questions.

What cybersecurity does a small South African business actually need?

The modern SMB cybersecurity baseline in South Africa is: MFA on every account (not just email), endpoint detection and response (EDR) instead of traditional antivirus, email security filtering with anti-phishing policies, verified backups following the 3-2-1 rule, patching on a monthly cycle for OS and third-party apps, and a written incident response plan that names who notifies the Information Regulator within breach notification timelines. On top of that, quarterly phishing simulations and user training.

Anything less than this baseline is going to fail a security review and probably a breach.

Why isn't traditional antivirus enough any more?

Traditional antivirus matches files against known malware signatures. Modern attacks don't look like signatures. They use PowerShell scripts, legitimate admin tools (living-off-the-land), fileless techniques, and polymorphic code that changes every hour. Signature-based antivirus misses a large share of modern threats; endpoint detection and response (EDR) tools catch the behaviour patterns and will stop a ransomware deployment mid-execution.

Modern EDR (Microsoft Defender for Business*, CrowdStrike Falcon*, Sophos Intercept X*) is often bundled with licences you already own. Defender for Business comes with Microsoft 365 Business Premium* at no extra cost.

What is SIEM and why does it matter for SMB cybersecurity?

A SIEM is a Security Information and Event Management (SIEM) platform that correlates alerts from your firewall, endpoints, Microsoft 365* sign-ins, and server logs in one place. For SMBs, it means you can actually see what's happening in your environment, unusual sign-ins from foreign countries, mass file encryption attempts, failed brute-force attacks on your firewall, data exfiltration patterns.

Attackers often go undetected inside SMB networks for weeks or months, quietly exploring the network, mapping critical systems and exfiltrating data before deploying ransomware. A SIEM is the single biggest factor in catching them in days or hours instead of months.

What does a solid incident response plan look like?

South Africa's data protection law requires that any business suffering a security compromise affecting personal information must notify the Information Regulator and affected data subjects as soon as reasonably possible after the compromise is discovered.

A solid incident response plan is a one-to-three page document that names: who detects the incident, who declares it (usually a single person with authority), who contacts the Information Regulator and the data subjects, the template notification wording, who contacts law enforcement if needed, what legal counsel to call, what forensic evidence to preserve before any system is wiped, and a brief "first-hour" technical checklist for containment. We write these for clients as part of their cybersecurity engagement. They're not a document to buy a template of and never read.

Can you help after a breach has already happened?

Yes, but call us immediately. The first few hours after a breach matter more than almost anything else. We handle incident response for existing managed clients as part of the service, and we take on breach response for non-clients when we have capacity. Our first actions in order: isolate affected systems without destroying forensic evidence, change credentials for compromised accounts, review audit logs for scope and timeline, assess data exfiltration, draft the regulatory notification wording, and coordinate with legal counsel and law enforcement.

We prefer to be your IT provider before a breach, not during one. But if you're reading this because you're in trouble right now, phone +27 65 933 9750.

How much does SMB cybersecurity cost?

A full baseline programme for a 50-user SMB typically runs between R15,000 and R35,000 per month depending on scope, with an initial setup project of R40,000 to R120,000 depending on what's already in place. Most clients already have some of the pieces (Microsoft 365* licences, a decent firewall) which pulls the number down.

Compare that to the actual cost of a ransomware incident at an SA SMB, which typically runs to R500,000 to R3m in direct costs plus 2-4 weeks of operational disruption. The maths is uncomfortable only for one direction. We quote after we have talked through what you need, so the number is honest.

RE
// WRITTEN BY
Roy Elliott — Founder, Immersive IT
Founder of Immersive IT. Based in Pretoria. Full bio.

* Products named on this page are examples of the stack we deploy. Actual recommendations depend on your environment, scale, and existing licensing. We have zero commission arrangements with any vendor. Recommendations are made on technical fit alone.