Opera Software ASA has added a filter that blocks phishing sites to its Web browser software, following the example set by rivals Microsoft Corp. and Mozilla Corp.

In version 9.1 of the Opera Web browser, released Monday, the company introduced a phishing filter that uses information from PhishTank and GeoTrust to help protect users from being duped by phishers.

PhishTank, overseen by open-source group OpenDNS, is a collaborative clearinghouse that allows anyone to submit and track data about phishing sites. GeoTrust provides digital certificates.

Computerworld