Though Google’s Project Zero bug-hunting team is usually vocal when describing software vulnerabilities, they’ve taken a very quiet approach to a just-patched bug in the Chrome browser this past week. Typically the team discovers and patches vulnerabilities before they can be taken advantage of; in this case cybercrooks were already abusing the hole in real-life attacks. For this reason, the announcement was more low-key than usual and referred to as zero-day or 0-day. This means there were zero days in the past that any user could have patched the vulnerability ahead of the crooks. To learn more about the specific exploited bug, and to check which version of Chrome you’re using to ensure you’re up to date, click here to read more.