Depending on your security and privacy settings on your Apple Mac, you may get a message that software or an app you were installing “was blocked from opening because it is not from an identified developer.” And when you try to override it, the ‘Allow’ or ‘Open Anyway’ button doesn’t work. The explanation below may be why!

If you have started seeing a little red padlock in your Gmail email, don’t freak out, even if the red padlock is open. All that it means is that the sender didn’t use transport layer security (TLS) when sending it – in other words, it simply means that the email was not encrypted when it was sent.

It was almost 5 years ago that we first reported that Yahoo uses web beacons to track their users’ movements across the Internet. So Yahoo’s use of web beacons is nothing new. But recently people who subscribe to Yahoo groups have started receiving Yahoo “Updates in Your Groups” email (sent from groupsupdates@yahoogroups.com), which has this little notice at the bottom: “To learn more about Yahoo!’s use of personal information, including the use of web beacons in HTML-based email, please read our Privacy Policy.”