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BEC, Phishing, Ransomware and DDoS – How to Protect Your Organisation

Cyber attacks continue to affect organisations of every size and sector. While the headlines often focus on major breaches, many attacks start with something far simpler – a convincing email, a compromised password or an employee clicking the wrong link.

In our Cyber Byte session, supported by Network ROI, cyber security specialists Neil Douglas from Network ROI and Willie Fairhurst from the Cyber and Fraud Centre – Scotland explored four of the most common threats facing organisations:

  • Business Email Compromise (BEC)
  • Phishing
  • Ransomware
  • Distributed Denial of Service (DDoS)

The good news? There are practical steps every organisation can take to reduce risk and improve resilience.

Business Email Compromise (BEC)

BEC is one of the most financially damaging cyber crimes affecting organisations. Rather than relying on malware, criminals impersonate trusted individuals such as senior team leaders, suppliers or colleagues. Their goal is to convince someone to transfer money, change bank details or disclose sensitive information.

Common warning signs:

  • Requests for urgent payments.
  • Last-minute changes to supplier bank details.
  • Pressure to bypass normal procedures.
  • Emails that appear genuine but contain subtle differences.

How to protect your organisation:

  • Require independent verification of payment requests.
  • Implement multi-factor authentication (MFA).
  • Use approval processes for high-value transactions.
  • Train staff to recognise common tactics.
  • Monitor for lookalike domains.

Phishing

Phishing remains one of the most common ways criminals gain access to organisations. Attackers send emails, text messages or messages through collaboration platforms that appear legitimate, but are designed to steal passwords, install malware or trick users into taking harmful actions.

Modern phishing attacks are increasingly sophisticated and often exploit trust, urgency and curiosity.

How to reduce the risk:

  • Use MFA across all business systems.
  • Keep software and devices updated.
  • Provide regular staff awareness training.
  • Encourage employees to report suspicious emails.
  • Deploy email filtering and anti-phishing controls.

Willie and Neil discussed during the webinar, that user awareness remains one of the most important controls. Even the best technical solutions cannot stop every malicious email from reaching an inbox.

Ransomware

Ransomware attacks encrypt files and systems, preventing organisations from accessing critical information until a ransom is paid. These attacks can result in operational disruption, financial losses and reputational damage.

Key preventative measures:

  • Maintain secure, tested backups.
  • Apply security patches promptly.
  • Restrict administrative privileges.
  • Use MFA on all accounts.
  • Monitor systems for unusual activity.
  • Develop and regularly test an incident response plan.

A common misconception is that ransomware is solely a technical problem. In reality, many ransomware incidents begin with compromised credentials obtained through phishing or weak security controls.

DDoS Attacks

A Distributed Denial of Service (DDoS) attack floods online services with traffic, overwhelming systems and preventing legitimate users from accessing websites or applications.

Unlike ransomware, the objective is not always to steal data. Often the goal is disruption.

Preventative measures:

  • Use DDoS mitigation services.
  • Work with hosting providers that offer DDoS protection.
  • Monitor network traffic.
  • Establish escalation procedures.
  • Review business continuity plans.

Why MFA alone isn’t enough

One of the key messages from the webinar was that MFA remains critical but should not be viewed as a silver bullet. Organisations should also consider:

Conditional access policies

These controls can restrict access based on:

  • Device compliance.
  • Geographic location.
  • User risk level.
  • Network type.

Device management

Organisations should ensure that only approved and compliant devices can access business systems and sensitive information.

Legacy authentication

Older authentication protocols may bypass modern security protections and should be disabled where possible.

What to do if you think you’ve been attacked

The first few minutes matter.

If you suspect a compromise:

Stay calm

Panic leads to mistakes. Focus on gathering information and follow your incident response process.

Isolate affected systems

Disconnect compromised devices from your network where appropriate.

Change credentials

Reset passwords for affected accounts and revoke active sessions where possible.

Preserve evidence

Avoid deleting emails, logs or files that may help investigators understand what happened.

Contact relevant parties

Depending on the incident, this may include:

Assess the wider impact

Determine:

  • What systems were affected.
  • Whether data was accessed.
  • Whether customers, suppliers or staff are impacted.
  • Any regulatory reporting requirements.

Learn from the incident

Every incident provides an opportunity to strengthen controls and improve resilience.

Finally

There is no single solution that eliminates cyber risks. The most resilient organisations combine:

  • Strong technical controls.
  • Secure configuration.
  • Multi-factor authentication.
  • Device management.
  • User awareness training.
  • Trusted incident response plans.

Cyber security is most effective when people, processes and technology work together.