I just spent 30 minutes cleaning crap off of my partner's computer because of a program that I tend to stand by.
I hate Windows Media Player. I hate that it talks to the internet every time I put a CD or DVD in a tray. So I downloaded GomPlayer to be my video player. It's a great program. It plays everything, and it will find the Codecs it needs to download. It doesn't have the privacy invasion aspects that Windows Media Player has.
But they've started bundling malware with their installations. Specifically, a recent update installed MyRadioPlayer, which causes ads to pop up regularly when browsing; it set Chrome to open multiple webpages on launch, all of which were data-mining search engines; and it installed a program called Search Protect, which prevented the user from fixing any of those settings. No matter what you did, you couldn't un-do any of what happened to your computer by changing settings in your browser. Kim tried this a couple of times before asking for help. If you're not someone who's seen this kind of infection before, you're in trouble.
If you looked at your installed programs list, you would not find myradioplayer, or search protect. Looking for search protect in installed programs is step one of every tutorial for removing it. Neither program appears in add-remove programs. You'd have to go into system files, find the damned installations, and manually uninstall them.
This is malware. This is absolutely malware. It's a program that hijacks your browser, will not let you change anything, and installs without your knowledge or permission.
They came bundled with a GomPlayer update.
Bundling is how you end up with MacAffee Security Scan installed on your computer. That's malware that screams at you about how your computer is unprotected, and that the only solution is to buy McAffee. It's malware because it installs without your knowledge or permission, is difficult to remove, and tries to annoy you into buying a product.
Just make sure you read every single line of an installation dialogue, because bundling is how most malware is getting installed these days. It's a severe enough problem that they ought to make bundled software installations illegal, with an exception made for software suites from a single company.
And be wary of GomLab/Gretech products right now. I'm really horrified that an infection this extreme came bundled with software from a company I used to trust.