Moving Beyond MFA: Defending SA Businesses with Passkeys in 2026

As we navigate the digital landscape of 2026, South African business owners are finding that the cybersecurity strategies of yesterday are no longer sufficient. For years, Multi-Factor Authentication (MFA) was the gold standard, often implemented via SMS codes or mobile push notifications. However, a significant shift in the threat landscape has rendered these traditional methods vulnerable. The primary culprit is the surge in AI-driven cookie-hijacking attacks, a sophisticated method where attackers bypass login credentials entirely by stealing active session tokens. For the local entrepreneur, understanding this shift from password-reliance to phish-resistant authentication is no longer optional; it is a requirement for survival in an increasingly automated threat environment.

To understand the urgency, we must look at the evolution of the attack vector. In 2024 and 2025, Interpol’s African Cyberthreat Assessment Report consistently ranked South Africa as a primary target for business email compromise and ransomware. By 2026, these threats have been supercharged by Generative AI. Attackers now use AI-driven tools to create highly convincing, dynamic phishing sites that act as transparent proxies. When an employee attempts to log in to a spoofed version of Microsoft 365 or Xero, the attacker’s proxy captures the login credentials and the MFA code in real-time. More importantly, it captures the session cookie—the small piece of data that tells a server the user is already authenticated. Once an attacker has this cookie, they can clone the user's session on their own device, bypassing MFA entirely because the server believes the 'trusted' session is simply continuing.

This technique, known as Adversary-in-the-Middle (AitM) attacking, has been democratized through platforms like Evilginx and various 'Phishing-as-a-Service' models. In the South African context, where many small to medium enterprises (SMEs) rely on remote work and cloud-based accounting, the theft of a single session cookie can lead to unauthorized fund transfers or the exfiltration of sensitive client data protected by the Protection of Personal Information Act (POPIA). The South African Banking Risk Information Centre (SABRIC) has noted a marked increase in digital banking fraud specifically targeting business session tokens rather than just passwords.

The solution to this systemic vulnerability lies in the adoption of passkeys, specifically device-bound passkeys based on the FIDO2 and WebAuthn standards. Unlike a password or an SMS code, a passkey is a cryptographic entity that never leaves the user's device. It consists of a public-private key pair. The service provider (like Google or Microsoft) holds the public key, while the private key is stored securely on the user’s hardware—be it a smartphone, a laptop’s Trusted Platform Module (TPM), or a physical security key like a YubiKey.

What makes passkeys revolutionary for South African businesses is that they are inherently phish-resistant. Because the authentication process is bound to the specific domain of the website, a passkey will simply refuse to authenticate if the user is on a fraudulent proxy site. Even the most sophisticated AI-generated phishing page cannot trick a device into releasing a cryptographic signature to the wrong URL. This effectively kills the cookie-hijacking vector at the point of entry. While 'synced passkeys' (those backed up in the cloud by Apple or Google) offer great convenience for consumers, South African businesses should look toward 'device-bound' passkeys for high-privilege roles. These require the physical presence of the specific hardware, ensuring that even if an employee’s cloud account is compromised, the business-critical session remains secure.

Implementing this technology is becoming more accessible. Major platforms such as Amazon Web Services (AWS), Cloudflare, and Okta have fully integrated FIDO2 support. For a local business, the transition begins with an audit of current identity providers. If your organization uses Microsoft 365 or Google Workspace, the infrastructure for passkeys is already largely in place. The transition involves moving away from 'legacy MFA'—like SMS and voice calls—and enforcing 'phish-resistant MFA' policies. This shift not only hardens security but also improves the user experience. Employees no longer need to remember complex passwords or wait for SMS codes that often get delayed by local network congestion; they simply use their fingerprint or face scan on their trusted device to gain access.

However, technology is only one half of the equation. Business owners must also address the human element. The surge in AI-driven attacks means that social engineering is becoming more personalized. AI can scrape LinkedIn profiles of South African executives to craft perfectly phrased emails that mimic the tone of a local supplier or partner. While passkeys prevent the technical theft of the session, employee awareness remains vital for identifying the intent behind an interaction. Combining robust device-bound security with a culture of digital skepticism creates a multi-layered defense that is difficult for even automated AI bots to penetrate.

As we look toward the remainder of 2026, the gap between businesses that adopt modern authentication and those that cling to legacy MFA will widen. The cost of a data breach in South Africa now includes not only the immediate financial loss and recovery costs but also significant regulatory fines and irreparable brand damage. For entrepreneurs looking to scale, building on a foundation of secure, passwordless identity is a competitive advantage. It signals to international partners and local clients alike that the business is resilient against the modern threat landscape.

At WriteNow Agency, we understand that navigating the complexities of modern cybersecurity and business automation can be daunting for growing South African enterprises. Our team focuses on helping businesses implement high-level technical solutions that streamline operations while maintaining the highest security standards. Moving beyond MFA to a passkey-first environment is a journey, but it is one that ensures your business remains a difficult target in an era of automated, AI-driven crime. By making the switch now, you aren't just protecting your data; you are future-proofing your business's legacy in the digital economy.