The verdict in three sentences
Securing a B2B web app before production costs, in 2026, between 14,000 and 46,000 CAD (pentest + privacy audit), plus 10 to 20 % of the build budget for remediation. The typical timeline is 3 to 5 weeks. It is a non-negotiable investment: a breach or a GDPR fine costs infinitely more than an audit.
Pentest, privacy audit and compliance
Two complementary exercises: the pentest hunts for exploitable technical flaws, the privacy audit checks the lawful processing of personal data. A security officer generally requires both before authorising a go-live.
| Service | Contents | 2026 cost (CAD) | Timeline |
|---|---|---|---|
| Application pentest | Intrusion test, report, retest | 8,000 - 28,000 | 2-3 wks |
| Privacy/GDPR audit | Register, DPA, legal bases | 6,000 - 18,000 | 1-2 wks |
| Compliance work | Fixes, encryption, logging | +10-20 % of build | 2-4 wks |
| DPA & processors | Data processing contracts | 2,000 - 5,500 | 1 wk |
| Team training | Security awareness | 1,500 - 4,000 | 1-2 days |
The pentest must include a retest after fixes: paying for an audit without verifying the fixes proves nothing.
Common vulnerabilities and remediation cost
Most flaws found in 2026 remain classic: broken access control, injection, exposed secrets, missing encryption. Here are the most frequent cases and their fix cost.
| Vulnerability | Risk | Remediation cost (CAD) |
|---|---|---|
| Broken access control | Access to others' data | 4,000 - 12,000 |
| Injection (SQL/XSS) | Data theft or tampering | 2,500 - 9,000 |
| Exposed secrets/keys | Full compromise | 2,000 - 7,000 |
| Missing encryption | Data readable in clear | 3,500 - 11,000 |
| Missing logs & audit trail | Impossible to audit | 2,500 - 8,000 |
| Vulnerable dependencies | Known exploit | 1,500 - 5,500 |
Broken access control (one user reaching another's data) is the most serious and most common flaw in multi-tenant SaaS. It alone justifies the audit budget.
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Mini case study
David, security officer at a B2B SaaS scale-up in Toronto, mandates an audit before deploying a new version. Budget: pentest at 16,000 CAD, privacy audit at 10,000 CAD, remediation estimated at 15 % of a 110,000 CAD build, i.e. 16,500 CAD. Total: 42,500 CAD, 4-week timeline. The audit reveals broken access control letting one customer view another's data. Fixed before production, this incident could have cost a six-figure fine and the loss of Enterprise customers. The audit's return on investment is immediate.
FAQ
How much does a B2B web app pentest cost in 2026? Between 8,000 and 28,000 CAD depending on scope and depth. A serious pentest always includes a retest after the flaws are fixed.
What is the cost of a privacy/GDPR audit? Between 6,000 and 18,000 CAD for a B2B app: processing register, legal bases, processor contracts (DPA) and recommendations.
How much to add to the budget for compliance? Budget 10 to 20 % of the build for compliance work (encryption, logging, fixes). On a 110,000 CAD build, that is 11,000 to 22,000 CAD.
What is the most common SaaS flaw? Broken access control, where a user reaches another tenant's data. It is also the most serious: its remediation costs 4,000 to 12,000 CAD.
How long does a security campaign take? Between 3 and 5 weeks total: pentest and audit in parallel, then remediation and retest. Plan this window before your go-live date.
Let's scope your project. Tell us your stack, the volume of personal data processed and your go-live date, and we will scope audit and remediation. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
