Recently patched iOS security flaw also affects OS X

Update your Mac ASAP.

Last week Apple rolled out a patch for iOS that closed a security flaw that could give attackers control over a device by having a user click a single link. Now, Apple is patching the same hole in the Safari web browser on the desktop, with new updates for the browser as well as OS X Yosemite and El Capitan. Lookout Security and Citizenlab identified the flaw based on a link sent to a human rights activist, and believe the "cyber war" organization NSO Group was selling the exploit to governments like the UAE.

You may or may not be a target of government surveillance, but now that the vulnerability is widely known others could try to use it. That means it's probably a good idea to make sure you have the latest updates installed right now before you click another shady web link.