I found that a family member had inadvertantly installed two questionable Safari extensions called "HeadlineAlley" and "100sofRecipies". These extensions are from a dodgy enterprise called "Mindspark", and seem to be useless at best. The family member doesn't know what they are or how they came to be installed, so it seems that some deception was involved. These may or may not be malware, strictly speaking, but they are certainly PUPs. It was worrisome to find them on one of our family computers, and I wish Bitdefender would block them.
Although I don't know how these extension got onto our computer, I found them offered for download here:
