About a month ago, when browsing Amazon.com, I started seeing unwanted banners/pop-ups on the page. They manifest themselves as advertisements for random products, and say "presented by shopping deals". An example is show in the screenshot below. The banners are at the top and bottom of the page. The banners don't appear on most websites, mainly Amazon.com. They have appeared a few other times at various websites which I do not recall. Additionally, I cannot get to the chrome extensions manager page. The page will load briefly, but then immediately close out of itself.
--------A help letter from a victim
Presented by Shopping Deals Adware Description
Presented by Shopping Deals is an unwanted adware that has the ability to do harm to infected computer. It is an unreliable website that usually appears on the well-known web browsers including Internet Explorer, Google Chrome and Mozilla Firefox.
Each time you are connected with Internet, Presented by Shopping Deals malware will come out with browser extension or add-on. Same as many other adware
(Arcade yum Pop-ups, Block “Warning: Internet Security Damaged”)
