Understanding common cyber threats

Learning edition: 5 October 2026. Introductory learning material.

These threat types can affect everyday business operations. Use them to identify relevant scenarios; their order is not a current threat ranking or incident forecast.

• Phishing: messages or calls that prompt unsafe disclosure, sign-in or payment.
• Ransomware and data theft: attacks that can disrupt access to information and expose it.
• Unpatched systems: devices and software with weaknesses attackers may exploit.
• Supplier and account compromise: trusted services or accounts used to reach other systems.
• Misuse and mistakes: inappropriate access, accidental sharing or unsafe changes.

Activity: Identify which of these could interrupt your critical process. Ask your IT provider how alerts, updates and incident reporting are handled.

Reference: CISA small-business resources. Check the source and your system provider’s current instructions before implementation.

How AI changes the picture

AI can help criminals produce convincing messages, cloned voices and synthetic video. Professional wording and a familiar voice or face do not establish identity. AI tools used by your own business also create risks when people share sensitive information or connect them to accounts without review.

Keep both questions in view: How could someone deceive our people? and What could our own tools expose or change? Continue patching, protecting accounts and testing recovery; AI does not replace these priorities.

Practice: Choose one approval in your critical process. Identify an independent check that would still work if a convincing message were fake.

Further reading: FBI: Criminals Use Generative Artificial Intelligence to Facilitate Financial Fraud (3 December 2024); NCSC: The hidden risks of shadow AI (7 September 2026).