Study Finds Major Weaknesses in Single Sign-on Systems, PCWorld, March 27, 2012

Flawed sign-in services from Google and Facebook imperil user accounts, Ars Technica, March 25, 2012

Trial finds EIGHT WAYS to defeat Google, PayPal and other SSOs, Multiple flaws in web service single sign-on, The Register, March 20, 2012

Web Services Single Sign-On Contain Big Flaws, Dark Reading, March 19, 2012

Researchers discover "worrisome" authentication flaws in many online services, sites, ZDNet, March 16, 2012

Informatics students discover, alert Facebook to threat allowing access to private data, PhysOrg, Feb 3, 2011

New Facebook vulnerability patched, ComputerWorld, Feb 2, 2011

Facebook Fixes Security Vulnerability, eWeek, Feb 2, 2011

Facebook plugs gnarly authentication flaw, Register, Feb 2, 2011

Facebook flaw allowed websites to steal users' personal data without consent, Graham Cluley's blog, Feb 2, 2011