As a webmaster, how do I work with malware browser plugins?

Question

I have a client side javascript error log.
He showed that some of my pages are susceptible to malware installed in users ’browsers, which may affect user / sales performance.

Example malware that causes JavaScript errors:

• eshopcomp
• Yontoo

Error Examples:
Yontoo

at Function.m.parseJSON line 4, column 15739 (http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js:4)
     at ? line 47, column 428 (http://serviceama-a.akamaihd.net/js/intext.js:47)
     at m.event.dispatch line 3, column 8436 (http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js:3)
     at r.handle line 3, column 5146 (http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js:3)

eshopcomp

at Function.n.scaleOnResize line 5, column 7710 (https://pstatic.eshopcomp.com/nwp/v0_0_571/release/Shared/App/SharedApp.js:5)
     at ? line 5, column 6509 (https://pstatic.eshopcomp.com/nwp/v0_0_571/release/Shared/App/SharedApp.js:5)