LastPass installs malware?

From the lastpass download page, I installed the contents of https:// lastpass.com / download / cdn / lpmacosx.zip (de-urlized, for public safety)

My browsers were all hi-jacked, links taken over - lots of 'searchmadeeasy.com' linking (particularly on stackoverlow.com and viewing stackoverflow.com results in google searches) and http:// macsecurity-alert .com (de-urlized again), which is pretty obviously a malware phishing type site.

I never get caught by these sorts of things, and only downloaded lastpass on the recommendation of colleagues. Only by uninstalling lastpass were the issues addressed.

Anyone else seeing this with recent installs of lastpass? Infuriating that what I thought was a respectable company/product is desperate for cash to hijack browsers.

Edit: do tell me if I'm wrong on anything here, please!