Alleged one-stop index site providing an overview of all
cryptography-related resources on the net. Includes a search
engine and online bookstore. Biased towards introductory material
and software.
The risks
digest by Peter G. Neumann reports technically flavoured security
issues from all over the world, from air traffic hazards over PC
software flaws to credit card frauds. Highly recommendable.
CERT announces internet security alerts (new bugs or
weaknesses in operating systems, router hardware and the like).
Contains a huge searchable archive.
The cypherpunks group (Berkeley) is interested in
cryptography-related coding. Available also is a very large software
archive. There is also a (rather historical) net
anonymity FAQ from 1993.