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Job Opening - Security Engineer (Data Analytics) /> 
Hi All,
I'll like to borrow the security
section here to find security like-minded folks whom are keen in a
role in my company. If this is not the correct section, Moderators
please assist to move as required and appreciate the help.
This
is a junior position and we're open to fresh graduates (Diploma /
Degree) or folks with 1~2 years working experience. I'll also like to
highlight that this position is open to Singaporeans / Singapore PRs
only.
Interested parties please drop me a PM with your contact
information and I'll get in touch soonest possible.
Currently I have 3 private GPG pairs which are all master keys. I want
to convert these keys into subkeys for a new key pair (and keep that
in the vault).I have read the following thread
http://atom.smasher.org/gpg/gpg-migrate.txt which involes some sort of
hacking the binary file to convert one master key into a subkey and
replace it with another. Is it possible to combine my different keys
into a new single key pair so they still remain valid, and I can refer
people to signing my master k
I am wondering how could a zero-knowledge host such as mega.co.nz
prevent users to just upload files in clear, and, for example, to
discredit the site by uploading a large quantity of illegal material
and then telling the authorities.Ideally, the server should refuse
unencrypted uploads. However, what's a definition of "unencrypted"
that a computer may understand? I guess there's none.It could be that
by pure chance, a JPG picture of a giraffe is actually the cyphertext
of some other encrypte
I found myself looking at a stock and forex search page when I try to
access Chinese Stackexchange using my FireFox browser today. This is
what the page looks like:And this is the HTML of the page:<!DOCTYPE
HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN"
"http://www.w3.org/TR/html4/frameset.dtd"><!--
turing_cluster_prod --><html> <head> <meta
http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>stackexchange.com</title&
Suppose I have a brand new router, and I have set up some basic things
just to get a wireless home network going:I created an SSID name for
the network, and it's WPA2-PSK protected. I also added a password for
the router "admin" in order to prevent others allowed in the network
from modifying the router settings.The router gateway/settings cannot
be accessed from WAN.I also had needed to do some port fwding on some
ports in order to access security IP cams from the internet. Thus for
ex: h
So http://en.wikipedia.org/wiki/SHA-1 SHA-1 produces a 160-bit
(20-byte) hash valueand As of 2012, the most efficient attack
against SHA-1 is considered to be the one by Marc Stevens with an
estimated cost of $2.77M to break a single hash value by renting CPU
power from cloud serversWith a theoretical attack taking 2^60
operationsSo if a custom verification algorithm only the first 64bits
of the full hash how secure is that? How many operations would it
require?
Suppose I'm suspicious that one or more (pseudo)-random number
generators is cryptographically flawed, perhaps even deliberately
backdoored. The RNGs in this case might be either PRNG algorithms,
hardware random number generators, or some OS-provided primitive whose
source might be either of these.Can it ever be a bad thing to "salt"
the RNG by using the xor of its output and some other RNG's output?
The latter RNG might be of much lower quality but be unlikely to have
been compromised by th
I have prepared a paper to publish in a web security conference. How
can I know the ranking of available conferences to know which
conference is better? For example, should I look at their sponsors?
The only data in the cookie is the session ID. There is no expiration
timestamp set when creating it, a session is always evaluated
server-side to see if it has expired.When logging out, the session is
destroyed server-side. Is there any point then in expiring the cookie?
I need to allow users to upload files with sensitive data to a server,
then invite other authenticated users to access specific files.This is
my proposed solution:Each user will have his own folder to which he
uploads files, and the parent folder will have an .htaccess with deny
all to block direct access. (This already works well.)Then, an
invited user will get a generated SHA1 invitation id and the url will
be something like download/[sha1]/file and I can then use my
controller to check

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