1
vote
3answers
19 views

Is it better to use a root password, or use 'sudo bash'?

When I am doing a lot of sudo operations, I like to spawn a bash shell from sudo to make the operations go quicker. I am against assigning a root password because I do not like the root account ...
176
votes
18answers
11k views
+500

Passwords Being Sent in Clear Text Due to Users' Mistake in Typing it in the Username Field

Upon reviewing the Logs generated by different SIEMs (Splunk, HP Logger Trial and the AlienVault platform’s SIEM) I noticed that for some reason quite a few users tend to make the mistake of typing ...
1
vote
2answers
26 views

Do cell-phones exist with open source baseband processors?

In a recent question (can't seem to find now), someone asked: Is it possible to track a phone which is off? and received a response of Who's to say that it's really off? Your phone has both ...
0
votes
2answers
53 views

Are web vulnerability scanners active or passive?

I want to scan my own website for vulnerabilities using Vega and w3af from kali linux. I assume these tools perform active attacks, not passive ones. Is this correct? If they do perform active ...
0
votes
1answer
20 views

Buzzfeed just downloaded a binary file to my PC, unasked

The file is binary, named '96748', and it's 12.8kb in size. Ubuntu thinks it's an swf. Thank god I was in a Linux VM and not Windows. It doesn't seem to have done anything, and it's just sitting there ...
0
votes
0answers
18 views

HTTP vs. HTTPS- detailed procedure to implement HTTPS

I have a third party system deployed on Apache web server and Jbose application server, but no SSL implemented. Please tell me the detail procedure on how can I implement the HTTPS feature on my ...
7
votes
4answers
114 views

DNS spoofing of linux distribution repositories

Question(s) Is it possible to "redirect" linux-update-repos via DNS spoofing (e.g. DNS cache poisoning) to a malicious website, so that harmful software (updates) will be installed, when running the ...
7
votes
9answers
2k views

How can I share files with other individuals using the cloud in a secure way?

I would like to use a dropbox because it is easy and convenient. But I want to encrypt the files with the public key of the intended recipient, so he will be the only one who can access the data in ...
2
votes
0answers
49 views

CSP Reports: Ignoring Client Malware

I'm seeing a lot of Content Security Policy (CSP) reports raised because of client-side malware. Many have "blocked-uri" entries like randomstring.cloudfront.net, something.akamaihd.net... I would ...
1
vote
1answer
72 views

Is it safe to store public key encrypted password in the Mobile Device for authentication purposes?

I have a Apache Cordova hybrid mobile app that needs to authenticate users, but we don't want to prompt for credentials every time the app is used. Some options came to my mind: Store the password ...
0
votes
1answer
30 views

Uniqueness of name in cryptography

If I publish my public key (I think I understand how this works, I'm still learning encryption) and I have a common name, could this leas to problems at all? OR does the email part guarantee that this ...
0
votes
2answers
30 views

How can a keylogger gather & transmit data from a client-only webapp run from file?

For a client-side only webapp run from file, how can a keylogger gather data and then transmit it? In this scenario, please limit the scope to the client code only, that an attacker somehow has ...
3
votes
0answers
36 views

What is the ideal anonymous workstation setup?

My goal is to build a perfect stationary workstation from which I can work anonymously. Most instructions on being anonymous usually involve, at some point, moving around and switching from coffee ...
31
votes
0answers
2k views

Can you prove that an open source program is running the same code that it claims to be? [duplicate]

So if a group has made open source software, and the source code is available on github, and is bundled with an executable in their main download, can it be proven that the executable is compiled from ...
15
votes
8answers
1k views

Are signature based antivirus or antimalware effective?

Are signature based antivirus or antimalware solutions effective? Has the battle been lost against the ever increasing amount of malware, particularly rootkits, that are in the wild?
1
vote
1answer
47 views

Can ISP use MITM attack to “break” encrypted traffic?

Use connection of A and B as an example. Their communications were encrypted by Public Key Encryption. Before they exchange their public key, ISP MITM attacked. A got "B"'s public key (ISP generated) ...
2
votes
2answers
864 views

Is OpenSSL CCS Injection (CVE-2014-0224) critical?

Recently the CCS Injection was discovered in OpenSSL (CVE-2014-0224) http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0224. It allows man-in-the-middle attackers to consequently hijack sessions ...
13
votes
5answers
2k views

Can sites which check your password as you type pose a security risk?

Some sites that I use check my password as I type it into the login (not registration) form. So, for example, to begin with I might have: Username: sapi ✓ Password: passw × and by the time I've ...
26
votes
1answer
2k views

How does a SIM card prevent cloning?

I have read a few articles about SIM cards, stating that the chip inside them uses some cryptographic magic to prevent people from cloning your number. This to me seems borderline impossible, given ...
1
vote
0answers
15 views

Compromised JSON Web Token (JWT) Bearer Token

We are implementing a REST service that requires authentication and authorization. Because of the stateless nature of REST API's, we want to use JWT to make authenticated calls to the API through a ...
1
vote
1answer
91 views

What causes a powershell payload to run the first time but not the second?

I created a windows/meterpreter/reverse_https powershell payload using the python script provided at the end of this article. In the first run, the meterpreter session opened successfully, when I ...
4
votes
4answers
175 views

Is webRTC safe against man in the middle attacks?

We are implementing an open source software package (copay, a multisig bitcoin wallet), that uses peerJS, which uses webRTC to allow peer-to-peer communication between browsers. peerJS (and webRTC) ...
2
votes
1answer
46 views

security reviews of third party code

I am not familiar with all the steps involved in a full-fledged information security review of an in-house developed application, so I am wondering whether or not the following scenario is ...
0
votes
1answer
33 views

Why is the HTTP Server header not used by most servers, but the User agent used by most browsers? [on hold]

I've read that the Server header would disclose information, and that its use would be bad. The arguments made in that question also apply for the User agent header. So why is it still used, and not a ...
3
votes
1answer
370 views

Are voluntary / manual DDoS illegal?

Since DDoS is simply a group of subjects coming together to send requests to a particular server, is it true to say that a voluntary DDoS is perfectly valid and legal in US? By that, I mean that a ...
1
vote
1answer
271 views

Installing Joomla with nobody:nobody user/group (CentOS/cPanel)

If you are installing Joomla via cPanel's File Manager to your mywebsite.com (user mywebsite) account, you will upload the package to your server and extract the archive. All files will have the user ...
0
votes
1answer
29 views

How secure is user-mode Linux, in terms of protecting the host system?

Two questions about User-Mode Linux: Suppose that a privilege escalation attack is used to gain root in a UML guest. Assuming modern (3.0 or later) host and guest kernels, is it trivial to escape ...
0
votes
0answers
22 views

What is known about recent zero day flaw with Tails and what level of confidence can we put on Tails to be able to keep us anonymous?

Following is a excerpt from COMPUTERWORLD Yesterday, in talking about the zero-day vulnerability in Tails, Exodus Intelligence wrote: "We publicized the fact that we’ve discovered these ...
4
votes
5answers
88 views

Can someone please explain RBAC to me?

From http://msdn.microsoft.com/en-us/library/jj709705.aspx In contrast to the DAC model, which is oriented around objects, the AzMan RBAC model attempts to orient the common administrative experience ...
0
votes
1answer
19 views

Is server-side access control sufficient or should I encrypt querystrings

I've got an ASP Classic system that passes around sequential ids corresponding to keys in the database. I had gotten an encryption module (chilkat, an activex control) that I was using to encrypt and ...
3
votes
1answer
472 views

Salt usage for Spring security?

I use the Spring security for Java web applications and I have written an authentication provider which is working without salt and now I want to either add salt or alternatively use the built-in ...
0
votes
1answer
25 views

Google safe browsing vs traditional anti-malware scanners

What is the difference between using Google Safe Browsing and using other traditional anti-webmalware tools ? Which one is more efficient to protect against malicious web content ?
1
vote
0answers
27 views

How to further analyze suspicious traffic

I've been monitoring my network traffic with Little Snitch, and today, when launching Chrome, just the default Chrome tab (shows most frequent sites), it alerted me Chrome was trying to connect over ...
1
vote
1answer
24 views

Server + Client certificate vs Server certificate + Client password

There are three different ways how TLS (1.2) can be used: server and client authenticate, only the server authenticates or neither authenticates. If neither server nor client authenticates using a ...
2
votes
2answers
290 views

Are there any logic-bombs that execute when the file is deleted?

I want to delete a suspected malicious file from a server. For the purposes of this question assume that the infected machine is Windows Server 2003 or later. Is there any risk in deleting such a ...
-1
votes
2answers
42 views

How to prevent accessing secure cross-domain data store

I have a client that needs to be able to secure a data site from hackers. This is the methodology we currently are looking at: server.com (web server) —> HTTP JSON API request —> dataStore.net (data ...
0
votes
0answers
16 views

Export non-extractable private key from Keychain on OS X

I have a PKI certificate in Keychain Access.app on OS X 10.9, together with the private key. The manual page for /usr/bin/security indicates that there is a -x option for security import to specify ...
1
vote
1answer
37 views

Auth / Login token schema

According to this answer, a valid login token schema would consist of the username (U) the time of issuance (T) and secret key K owned by the server only The suggestion then is to concatenate the ...
1
vote
1answer
22 views

User Binding Request with credentials in Lync Dump

I've dumped a call between two lync clients and saw that there were some UDP packets that look like this: Server -> Client 1132 14.495362000 <serverip> <clientip> STUN 146 ...
2
votes
2answers
45 views

Preventing a Computational DoS Attack in Public Key Cryptosystems

I'm designing a server which accepts anonymous messages using ECIES: as in, anonymous users send the server an ephemeral EC public key, and the server uses ECDH to derive a shared secret, and some KDF ...
-2
votes
0answers
31 views

Restrict a user to SSH authentication with a key [migrated]

Is there any possibility to restrict the password based authentication to a particular user in Solaris 10? The particular user should not log in with a password. Instead he should be able to log in ...
0
votes
1answer
127 views

How were hackers able to alter the text of my pages without a form or querystring?

I maintain a small site that runs old-fashioned classic ASP pages with an Access backend. Recently, the site got hacked. The attacker managed to add a large quantity of code to the index.asp page. ...
2
votes
2answers
74 views

Related-password hash security

Say we are given a strong cryptographic hash function hash(), a strong completely random password of 15 characters pass15, two single-character salt values salta, saltb. We compute the hashes hasha, ...
4
votes
3answers
37 views

Clearing/changing session id on logout

While reading through the newes OWASP ASVS standard (still beta) I have found a requirement V2.6 saying Verify that the session id is changed or cleared on logout. I do not see a clear point ...
0
votes
1answer
59 views

Spoofing public IPv4 address

How can I spoof my public IPv4 address to another without using proxys? I don't need any response, the TCP handshake needn't be completed! I just want to send a SYN packet with spoofed (specific) ...
1
vote
1answer
51 views

What Does Putting Each Subscriber of ISP in One Subnet of His Own Mean?

I've noticed that I used to be assigned an external IPv4 from my ISP and a 24 bit mask (255.255.255.0), then it changed to 255.255.255.255, today I was studying IPv4 subnetting and I understand that ...
0
votes
1answer
45 views

How can LastPass enforce 2-factor authentication

I've recently started using LastPass and one of the things you can set as a policy for you password vault is Prevent offline access when using Google Authenticator. The local cache can be ...
-2
votes
1answer
40 views

Problem in downloading and browsing [on hold]

My downloads stop completing and some page in the browser appearing blank or with text only without css or js and so on, some program after complete return me a message when trying to start ...
0
votes
2answers
232 views

Learning to script tools in Python and general Pen Testing

I want to learn Pen Testing and already know Java and have been learning Python and am fairly comfortable with Python syntax. I also have some knowledge on Linux and TCP/IP. My questions are: How can ...
0
votes
2answers
29 views

How can I mitigate attacks that rely on poisoned data as a developer?

A few years ago, there was a high-profile attack on a Wired editor, where the hackers added a credit card to the target's amazon account, then used that self-added credit card to gain access to the ...

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