Safe harbour is a legal protection that can reduce or block liability for online intermediaries, such as hosting providers, platforms, and marketplaces, when they meet specific conditions. The protection usually depends on acting as a passive conduit or host, responding to notices, and not taking part in the unlawful content or activity in a way that changes the legal analysis.
In cyber security, safe harbour matters because platforms often carry phishing pages, malware links, counterfeit accounts, and user-generated abuse. If a service uses automated ranking, recommendation, or moderation systems, courts may examine whether it is merely storing data or actively shaping its spread. Defenders protect eligibility by keeping clear policies, logging decisions, supporting human oversight, and removing malicious content quickly. Attackers may try to exploit intermediary protections by distributing harmful material through large services that appear passive on the surface.