Google chrome supports a blacklist of sites which are known for hosting malware or being used as phishing sites. A phising attack is where the attacker attempts to trick the user into entering their sensitive information into a fake website. Google Chrome eliminates that threat. Whenever you attempt to visit a site on this blacklist a warning will appear letting you know that this site is known for suspicious and potentially dangerous activity. Of course, you may proceed to the site at your own risk.
To further increase security Google Chrome sandboxes their tabs. This means that each tab in the browser is treated as a separate process. By doing this each of the tabs cannot see any information or data associated with any other tab. If you were entering your bank information on your valid banking site, and happened to have a malicious site open in another tab, the malicious site would be able to steal your bank information. With sandboxing that malicious site would not have access to any of the information in any of the other tabs and your bank information would remain safe and sound. This is also true for saved passwords, since your passwords are saved in your preferences, they are not associated with any tab and thus any malicious site would not be able to attain your password information.