
Visiting a web page rigged with malicious code can also infect a computer. The adware program may have been bundled with other software you installed on the computer, like a “free” tool bar extension or game. These types of invasive programs - which can affect Macs along with PCs - often redirect your browser to certain pages so those sites can get revenue by showing advertisements to (unwilling) visitors. If you are experiencing constant pop-up ads, trips to websites you didn’t intend to visit, a frequently changing home page, ads trying to sell you obscure security software or other odd browser behavior, your computer is probably infected with an aggressive adware program.

I keep getting pop-ups in my browser search bar and sent to a site I’ve never heard of. A bar at the bottom of the window will offer options to allow Flash to play. The Flash windows may not appear at all, or they may appear blank. In the resulting More Information dialog box, click the Remove all sites button.Find and double-click Shockwave Flash Object on the right (it’s listed under Adobe and will likely be near or at the top).In the resulting Manage Add-ons dialog box, make sure that Toolbars and Extensions is selected on the left.From the menus at the top of the window, select Tools>Manage add-ons.If you want to allow it at all, I recommend Allow Now. If you click Allow, you’ll get options to Allow Now or Allow and Remember. A gray bar at the top of the page will give you options to continue blocking or allow the flash. When you visit a page with an embedded Flash video, the video window will again be a box, but this time it will be white with Adobe’s Flash logo (a stylized letter ‘f’) in the center. Click the Always Activate pop-up menu on the right, and select Ask to Activate.

