When Malwarebytes first came on the scene it was an addon to ones current security great especially for lower quality solutions like what Microsoft provided they also had a pro version (pay once) lifetime updates; great. Over the years as the the industry switched is payment schemes and threats real or imagined became more frequent; Malwarebytes evolved. As a power user I've used lots of free & paid versions security software. I find Malwarebytes is actively improving and I so glad that they haven't wiggled out of their promises they made when they first started. Free software these days is limited; havng a paid version means better support when needed, fully unlocked features, regular updates equaling peace of mind; Malwarebytes Premium is the way to go and with the way it runs. An additional low profile solution running along with it is good too combined with Microsoft's solutions that are useful.... Remember regular backups and the knowledge that a lock is not your safety. It only keeps out the those who are not committed to be where they shouldn't.