What is a Denial of Service attack (DoS)?
A Denial of Service attack is a form of cyber attack which overloads a network. This can disrupt services and make a website unavailable to users.
The DoS attack can be caused by a computer virus that’s used to target a particular system.
A Distributed Denial of Service attack (DDoS), on the other hand, targets a number of computer systems at once.

Mark Sharron leads Search & Generative AI Strategy at ISMS.online. His focus is communicating how ISO 27001, ISO 42001 and SOC 2 work in practice - tying risk to controls, policies and evidence with audit-ready traceability. Mark partners with product and customer teams so this logic is embedded in workflows and web content - helping organisations understand, prove security, privacy and AI governance with confidence.