The Biggest Cybersecurity Risks Facing South African Businesses in 2026: Lessons from the June FortiBleed Credential Exposure

On 17 June 2026, cybersecurity researchers reported a large-scale credential harvesting campaign targeting Fortinet firewall and VPN devices. The incident, widely referred to as FortiBleed, reportedly exposed approximately 74,000 Fortinet credentials, raising concerns for organisations worldwide that rely on these systems to secure their networks and remote access infrastructure.

By 18 June 2026, IT teams and cybersecurity professionals around the world were actively assessing potential exposure and reviewing security controls. At SDS Tech, our team spent the evening helping clients evaluate their environments, review access security, and implement precautionary measures where necessary.

The incident served as a powerful reminder that cybersecurity threats are no longer distant possibilities. They are active, evolving, and capable of impacting businesses at any time.

As we move through 2026, organisations across South Africa face an increasingly complex threat landscape. While the Fortinet credential exposure has captured global attention, it is only one example of the cybersecurity risks businesses must prepare for.

The Fortinet Credential Exposure: A Wake-Up Call

The events of 17 June 2026 highlighted a growing challenge facing businesses worldwide: attackers no longer need to break down the front door if they already have the keys. This highlights a shift from system-based attacks to identity-based attacks.

Researchers reported that approximately 74,000 Fortinet firewall credentials had been exposed online, potentially providing attackers with access to systems used by organisations across multiple industries. While the exposure itself did not necessarily mean every affected device had been compromised, it reinforced the importance of strong credential management and proactive cybersecurity practices.

Firewalls and VPNs are designed to protect business networks from unauthorised access. However, when credentials become compromised, cybercriminals can potentially gain access using legitimate login information, making detection far more difficult.

As news of the FortiBleed campaign spread on 17 and 18 June 2026, businesses and managed service providers around the world began reviewing access controls, password policies, and authentication measures to minimise risk.

The incident demonstrates a critical cybersecurity reality: protection is not only about having security tools in place. Businesses must also ensure that user credentials, access controls, and authentication processes are properly managed and continuously monitored.

AI-Powered Phishing Is Becoming More Convincing

Phishing attacks have existed for years, but artificial intelligence has made them significantly more dangerous.

Cybercriminals can now use AI tools to generate convincing emails, mimic executive communication styles, create realistic-looking websites, and automate large-scale social engineering campaigns. These attacks often appear legitimate and can be difficult for employees to identify.

Many successful cyberattacks begin with a single click on a malicious link or the accidental sharing of login credentials. Once access is gained, attackers can move quickly through business systems.

South African organisations must invest in ongoing employee awareness training and implement advanced email security measures to reduce their vulnerability to AI-enhanced phishing attacks.

Stolen Credentials Are the New Favourite Attack Vector

The Fortinet incident reflects a broader trend in cybersecurity: stolen credentials have become one of the most valuable commodities in cybercrime.

Rather than attempting complex technical attacks, many cybercriminals focus on obtaining usernames and passwords through phishing campaigns, malware, data breaches, and credential harvesting operations.

Once attackers gain access to valid credentials, they can often bypass traditional security measures and move through networks undetected.

Businesses should regularly review:

• User accounts and permissions

• Password policies

• Privileged access controls

• Authentication methods

• Remote access security

Implementing multi-factor authentication (MFA) across all critical systems remains one of the most effective ways to prevent unauthorised access.

Ransomware Continues to Evolve

Ransomware remains one of the most significant cybersecurity threats facing businesses in 2026.

Modern ransomware attacks are no longer limited to encrypting files. Today's attackers often steal sensitive data before deploying ransomware, allowing them to threaten public disclosure if payment demands are not met.

The consequences can be severe:

• Operational downtime

• Financial losses

• Reputational damage

• Regulatory penalties

• Loss of customer trust

Businesses that lack secure backups, disaster recovery planning, and proactive monitoring often struggle to recover quickly from ransomware incidents.

Third-Party and Supply Chain Risks Are Growing

Most organisations depend on software vendors, cloud providers, technology partners, and external service providers to operate effectively.

While these relationships create efficiencies, they also introduce new vulnerabilities.

Attackers increasingly target third-party providers because a single compromise can provide access to multiple organisations. As digital ecosystems become more interconnected, businesses must evaluate not only their own cybersecurity posture but also the security practices of the partners they rely on.

Vendor assessments, access controls, and regular security reviews are becoming essential components of effective risk management.

Unpatched Systems Remain a Major Vulnerability

Despite significant advances in cybersecurity technology, many successful attacks continue to exploit vulnerabilities that have already been identified and patched by software vendors.

Cybercriminals actively scan the internet for outdated systems and known weaknesses. Once discovered, these vulnerabilities can provide a direct pathway into business networks.

Regular patch management, vulnerability assessments, and system updates remain among the simplest and most effective ways to reduce cyber risk.

Businesses that delay updates often create unnecessary opportunities for attackers.

Cybersecurity Is No Longer Just an IT Issue

One of the biggest misconceptions businesses still hold is that cybersecurity is solely the responsibility of the IT department.

In reality, cybersecurity affects every part of an organisation.

Leadership teams must understand cyber risk as a business risk. Employees must recognise their role in protecting company data. Technology partners must provide proactive support and guidance to help organisations stay ahead of emerging threats.

The FortiBleed credential exposure serves as a reminder that cybersecurity incidents can emerge rapidly and often require immediate action.

Businesses that invest in preparation, visibility, and resilience are far better positioned to respond when incidents occur.

Looking Ahead

The events of June 2026 demonstrate how quickly cybersecurity threats can emerge and why businesses need to be prepared to respond immediately.

The FortiBleed credential exposure is just one example of the evolving risks organisations face every day. While cybersecurity technology continues to advance, so do the tactics used by cybercriminals.

Businesses need continuous monitoring, strong access controls, proactive security management, employee education, and trusted technology partners who can respond quickly when threats emerge.

At SDS Tech, we believe cybersecurity is about more than protecting systems; it is about protecting business continuity. As demonstrated by the recent Fortinet credential exposure, organisations need to be prepared for threats that evolve without warning.

The businesses that succeed in the years ahead will be those that treat cybersecurity not as an afterthought, but as a critical component of their long-term growth, resilience, and success.