Contending his computer was surreptitiously infected with a malicious software program called Text Enhance that underlines words and generates pop-up ads when a cursor touches the highlighted passages, Dan Halperin filed a federal class-action complaint in Chicago against Affluent Ads and International Web Services, the alleged developer and distributor of the malware. The complaint alleged violations of two federal laws — the Computer Fraud and Abuse Act (CFAA) and the Electronic Communications Privacy Act …