Account activity refers to the actions and transactions that occur within a specific account, such as a bank account or an online service account. This can include deposits, withdrawals, purchases, and any changes made to account settings. Monitoring account activity helps users keep track of their financial status and ensures that all transactions are legitimate. Regularly reviewing account activity is important for identifying unauthorized transactions or errors. Many services provide a detailed history of account activity, allowing users to see when and how their account was accessed. This transparency helps maintain security and trust in services like online banking and e-commerce platforms.