Sotiris Ioannidis Steven M. Bellovin Building a Secure Web Browser. 127-134 2001 conf/usenix/2001f USENIX Annual Technical Conference, FREENIX Track http://www.usenix.org/publications/library/proceedings/usenix01/freenix01/ioannidis.html db/conf/usenix/usenix2001f.html#IoannidisB01