Read the introduction. home computers need anti-virus software. internet searches, music downloads, and social media browsing all put home computers at risk of viral infection. granted, some pc owners search the web and remain unscathed, but this is a risky situation. surfing unprotected through unlicensed websites with questionable pop-up messages leaves your computer vulnerable to attack. which phrase is found in the author’s counterclaim? internet searches, music downloads, and social media browsing all put home computers at risk granted, some pc owners search the web and remain unscathed home computers need anti-virus software surfing unprotected through unlicensed websites with questionable pop-up messages leaves your computer vulnerable