This is a tip about Safari but it could apply to other browsers as well. Troubleshooting some nasty Safari malware It also may encourage people to upgrade to El Cap or Sierra.


Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365