O’Reilly has announced the release of “Practical Unix & Internet Security, Third Edition” (US$54.95), authored by Simson Garfinkel, Gene Spafford, and Alan Schwartz. Focusing on the four most popular Unix variants today — Solaris, Mac OS X, Linux, and FreeBSD — this book contains new information on PAM (Pluggable Authentication Modules), LDAP, SMB/Samba, anti-theft technologies, embedded systems, wireless and laptop issues, forensics, intrusion detection, chroot jails, telephone scanners and firewalls, virtual and cryptographic filesystems, WebNFS, kernel security levels, outsourcing, legal issues, new internet protocols and cryptographic algorithms, and more.