Can someone take money from your Coinbase account?

Could you elaborate on the potential risks of having money stored in a Coinbase account? Is it possible for someone to unauthorizedly access and withdraw funds from a Coinbase user's account? If so, what security measures does Coinbase have in place to prevent such occurrences? Are there any best practices that users should follow to keep their accounts secure? Additionally, what happens if a user suspects their account has been compromised?