Keep informed! Jim Hamm passes this along, "This alert of a vulnerability in OpenSSl was published earlier. If you missed reading about it, here is another alert. Undoubtedly there will be more of these types of alerts as the hackers get more creative."
And if you use a smartphone you'll want to scroll down to Arstechnica's March 29 entry, warning about selling or buying a used phone to turn off Find My Phone, and also telling about avoiding trouble with "good IMEI/ESN" or "bad IMEI/ESN." Others comment about these problems in later postings.
See Macintouch. See Arstechnica.