A broad coalition of technology groups today told a federal appeals court to toss out a lawsuit that adware maker Zango is continuing to pursue against computer security vendor Kaspersky Lab, arguing that to do otherwise would harm consumers and the future of the security software market. In May 2007, Bellvue, Wash.-based Zango — a company that makes software to serve pop-up ads and tracks users’ activities on behalf of online marketers — sued Kaspersky, charging that the company interfered with its business by removing its “adware” without first alerting the user. In August, the judge assigned to the case dismissed Zango’s suit, saying Kaspersky’s actions were shielded by the federal Communications Decency Act (CDA). That law contains a “good Samaritan” clause that protects computer services companies from liability for good faith efforts to block material that users may consider objectionable (portions of the CDA have been struck down by