Computer security company Symantec has introduced Symantec AdVantage, a new cloud-based service that detects malicious software (malware) hidden in online advertisements.

The company said that malicious advertising (malvertising) poses a growing threat to website owners and their customers reputation and bottom line.

Offered in partnership with Armorize Technologies, Symantec AdVantage will use the latest malware detection techniques to enable website owners to quickly, easily and cost-effectively mitigate malvertising threats, said Symantec.

Symantec AdVantage is scheduled to be made available to publishers and ad networks through a free early access program beginning in November 2011.

Among the capabilitie of Symantec Advantage are: scan, detect and report malvertising on websites by automatically alerting publishers and identifying the location of malicious advertisements so customers can remove malicious ads that may damage their business’ reputation.

Symantec has a real-time performance dashboard that works with the automatic reports by providing essential insights.

Symantec Identity and Authentication Services vice-president Fran Rosch said malvertising poses a serious risk to online publishers and their customers, reputation and revenue.

Rosch continued, "Highly publicised malvertising infections can damage the reputation of even the most trusted online sites. Symantec AdVantage will provide ad publishers the tools they need to protect their businesses by fighting back against these threats."