Data with legal weight

• Payment card data falls under PCI DSS, the card industry's security standard. Full card numbers and security codes don't belong in a general AI chat.
• Health information held by health plans, most healthcare providers and their vendors is protected by HIPAA in the US. Other countries and states have their own health data rules.
• Material non-public information, such as unreleased earnings or a pending deal, can create insider trading risk if it spreads beyond the people who need it.
• Privileged legal advice can lose its protection if it's shared outside the privileged group, and a third-party tool may count as outside.
• Each of these needs a tool approved for that specific kind of data. Otherwise it stays out of AI tools. Working for yourself? Your client contracts and the plan you pay for decide what counts as approved.