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location Washington, DC
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visits member for 2 years, 2 months
seen May 20 at 21:20
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Apr
22
accepted What applicability does the Halting Problem have to infosec?
Apr
21
comment Secure yet reversible encryption for local data store
I agree with Kitsune.. Don't implement your own crypto. It's too easy to make mistakes, you're a novice, and there are too many high-quality and free implementations out there to justify DIY crypto. Your best bet is whole disk encryption. If you need free, look at True Crypt.
Mar
15
awarded  Organizer
Mar
15
revised What is the next step of this file upload attack?
edited tags
Mar
14
comment What is the next step of this file upload attack?
"PHP is run with permissions that can't be obtained by a hacker via normal HTTP." I'm not sure if this is true for IIS in particular, but it's definitely not true in general. E.g. when running mod-php with apache, mod-php runs inside the daemon processes, and therefore executes as the same user, same umask, etc.
Mar
14
comment What is the next step of this file upload attack?
"As long as you have control over the file name and where it's stored1, it's not an issue." Wrong. See AJ Henderson's post, and also consider what happens if mod-php is a registered handler for .jpg files.
Mar
14
answered What is the next step of this file upload attack?
Mar
14
comment What is the next step of this file upload attack?
What's a nonexecute directory??
Feb
27
awarded  Yearling
Feb
13
asked What applicability does the Halting Problem have to infosec?
Feb
9
comment Protecting against SSL Strip
"Use SSL sitewide." If you do this, then users who enter yoursite.com will get a connection refused error, unless you have a non-SSL server listening on port 80 that redirects to port 443. But if you do that, then your users are susceptible to sslstrip, which is the whole point of sslstrip.
Feb
9
answered Protecting against SSL Strip
Dec
3
comment Checklist for securing MacOSX
They provide some in PDF format and some are in XML format. The ones I linked to were in PDF, so I'd be surprised if you couldn't open them. The XML ones are admittedly hard to work with; there is no stylesheet that I know of that will pretty print a STIG.
Dec
3
answered Checklist for securing MacOSX
Dec
1
revised How to properly validate HTTP redirects?
fix typo
Dec
1
revised Should an app remove or encrypt locally stored user data after a user logs out?
fix typo
Nov
29
comment Is there formal guidance that requires all sessions to be logged off when a user changes their password?
@ixe013 You're assuming a lot about the OP's environment that isn't necessarily true. He might not be using cookie's to store session state. He might not even be talking about HTTP at all.
Nov
2
comment Is it necessary to scan users' file uploads by antivirus?
Nobody mentioned an important detail: threat model. In your threat model, are the people uploading these files considered to be potential attackers? If so, then #1 is a must.
Nov
2
comment Is it necessary to scan users' file uploads by antivirus?
What parsers are written in memory-safe languages? Most HTML, XML, and JSON is parsed in C or C++ code.
Nov
1
asked Compatibility between OpenSSL 0.9.8r and OpenSSL FIPS Object Module v1.2?