One of the main malware vectors back then was Internet Explorer (and specifically ActiveX), Outlook Express, and MS Office macros. That’s not just a matter of obscurity; it’s because Microsoft specifically wrote very shitty software with no regard for security. Netscape was not nearly as exploited as IE even when it was the leading browser.
It was due to other reasons, too.
One of the main malware vectors back then was Internet Explorer (and specifically ActiveX), Outlook Express, and MS Office macros. That’s not just a matter of obscurity; it’s because Microsoft specifically wrote very shitty software with no regard for security. Netscape was not nearly as exploited as IE even when it was the leading browser.