The protection of computer systems and information from threats such as theft or data destruction.

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601
votes
18answers
70k views

How are pseudorandom and truly random numbers different and why does it matter?

I've never quite got this. Just say you write a small program in any language at all which rolls some dice (just using dice as an example). After 600,000 rolls, each number would have been rolled ...
1
vote
1answer
24 views

Restricting a program's access to the Windows registry

Is it possible to prevent a certain program from accessing the Windows registry? I know there are ACLs to lock out a user, but what about per-executable control?
-3
votes
2answers
22 views

Will installing Tor on my VPS allow me to hide its IP address?

I want to hide my VPS's IP from hosts it interacts with. It is my understanding that using Tor on a home computer would work to some extent, will it work as well on a VPS?
30
votes
7answers
15k views

What makes LastPass so secure?

I can't simply understand how using LastPass is secure. All an attacker need to do is to compromise the single LastPass account and then he has also compromised all other websites. What's so good ...
2
votes
1answer
6k views

Can't change or set password in Windows 7

I'm trying to set up a new user in a Win7Pro computer. The computer has HP ProtectTools enabled. I cannot set the password from within HP ProtectTools or the User Accounts control panel, when logged ...
18
votes
3answers
92k views

How to disable “Download scanning protection” of new Chrome-17?

In recent update of Google Chrome internet browser (in stable channel), there is a new security/privacy option: http://chrome.blogspot.com/2012/02/faster-browsing-safer-downloading.html In ...
3
votes
2answers
5k views

HDPARM Keeps giving Input/Output Error

I've been trying to set the password on my Seagate drive: sudo hdparm --user-master m --security-set-pass pwd /dev/sda I get Issuing SECURITY_SET_Pass command, password="pwd", user=master, mode=...
-1
votes
0answers
60 views

Why did iOS have an encrypted kernel? [on hold]

It was recently reported that the upcoming version of iOS has stopped storing the kernel encrypted on the device storage. The piece suggests that this might be a mistake, because it weakens the ...
1
vote
1answer
59 views

How to always trust software during install?

I am installing a program, and I keep getting this prompt: Would you like to install this device software? Name: Juno LTD. Jungo Connectivity Publisher: Atmel Norway [✓] Always trust software from "...
0
votes
1answer
20 views

Don't want Logged in user to change any files

We have a PC that we are setting up for a client, and the client wants us to lock down the PC as much as possible. I have a user called UserA that is the user that AutoLogs into the system. This ...
1
vote
1answer
22 views

How safe are proxies if your IP could be cross-referenced?

Let's say you're the NSA. And let's say you have "backdoor" access (for the sake of this discussion we'll assume that includes at a minimum the mapping of an IP address to a logged-in user) to Google. ...
0
votes
0answers
28 views

UDP Short packet

My mychine is probably under some kind of DoS attack, my syslog is full of: kernel: [5618300.661196] UDP: short packet: From 119.37.12.102:53 4103/1480 to x.9.158.119:3604 kernel: [5618300.663014] ...
1
vote
1answer
17 views

Privacy solution for Browser-Sync [on hold]

I want to sync my browser bookmarks all over my devices. Now Im thinking about security/privacy topics. There are a lot of articles out there which explains which browser using which method to sync ...
-2
votes
0answers
30 views

How Much Truth is to the rumors That someones Telegram account was hacked and used for Fraud? [on hold]

As Everyone knows the developers of Telegram Are Claiming it is the most secure Program and no one has been able to hack it Yet , there is even rumor that the developers are rewarding anyone who can ...
0
votes
1answer
47 views

Where to download dozens of viruses for AntiVirus testing [closed]

First of all this is a duplicate of some questions in this area, but please keep reading, the only difference is that I need dozens of viruses (about 10000). Secondly don't tell me to use Eicar test ...
0
votes
6answers
12k views

The requested security information is either unavailable or cannot be displayed

Something or someone had recently deleted 90% of the files on the network. The recovery was done by copying backup files from a Linux based NAS (Baffalo Terastation Pro) back into the win2k8 servers. ...
-3
votes
0answers
40 views

How to discover hosts on your ISP network [on hold]

I can use nmap to find hosts on my home subnet, but is there a way to look "beyond" and get a bigger picture at a level of your ISP provider? Having said that, I'm interested to know If my own ...
0
votes
1answer
50 views

How to make a self-signed certificate trusted?

I've created a self signed certificate on my Windows 10 PC and would like to see it trusted by the web browsers on the same machine. To do this, I've added the certificate to the 'Trusted Root ...
7
votes
3answers
1k views

How to configure linux to enforce new users to change their password on first login

I'm trying to configure users password policy on RHEL 6.6 and I want system to ask newly created users to change initial password on first login. Note, that I tried to set EXPIRE variable to 0 and ...
1
vote
2answers
28 views

How safe is it to host an HTTP Apache server at home?

I have an old server with Ubuntu server and Apache2 installed. I am using it to run a small one page site. I am using 'freenoms' for the free domain 'musicmash.tk' which is connecting to my public IP. ...
5
votes
2answers
2k views

Is Google's 2-step verification less secure with application-specific passwords?

When using Google's 2-step verification with services that can't use it, such as mail clients on smartphones and desktops, the solution is to create application-specific passwords for those services. ...
0
votes
2answers
1k views

Why netstat/TCPView/CurrPorts lists processes as unknown?

I'm trying to record data of all the processes that establish connections from my PC for security issues, I tried to do netstat -bn 1 > stats.txt, also tried to make a log file with CurrPorts, TCPView ...
0
votes
0answers
11 views

Windows 7 resource manager shows TCP sockets without a process, what is in the background?

Recently I've found some suspicious network activity from my computer, and I was curious, what process my Win7 does this. This is what I've found in the resource manager: As you can see, there are ...
-1
votes
0answers
31 views

Security of TeamViewer

I am considering using TeamViewer to monitor and provide support to a relatively small group of computers. I am a little concerned with installing any sort of program that would open op our network to ...
1
vote
0answers
25 views

my mac is asking me if I want to allow it to access information on an *unknown* iPhone … why?

When I came into my office this morning, my Mac Pro had an iTunes popup (#1):
 
 Do you want to allow this computer to access information on "John Doe's iPhone"? If you don't allow access, ...
-2
votes
0answers
41 views

Can Email Services download files on your computer without your permission/knowledge?

The company I work for is involved in security clearance work, and thus all company computers are monitored (files, screenshots, etc). However, the following questions involve personal computers, not ...
6
votes
4answers
1k views

How do I display a message on login for Windows 8/8.1?

I've configured the following settings in my local security policy: Interactive logon: Message text for users attempting to log on Interactive logon: Message title for users attempting to log on ...
2
votes
1answer
2k views

Can I build a VPN on top of Tor?

If I understand correctly, the Tor client works as a combination of a proxy server and application plugins (such as the Firefox Torbutton) that enable use of the proxy and contain additional ...
0
votes
2answers
91 views

The password on my mac (yosemite) is being changed everytime I logout

When I reset my macbook pro, the password gets changed. I have Yosemite 10.10.3 and Apple phone support haven't been able to get to the bottom of it yet. They suggested I re-install the OS but i'd ...
1
vote
1answer
24 views

EFS and encrypting new files automatically

I have an issue where files are not always being encrypted. I did a right-click and set the folder to encrypt all sub-folders and files when they are dropped in. As of right now, new files are not ...
4
votes
2answers
133 views

Stop Windows 10 search from running commands

We disable the run box on our network through a GPO which for anything upto 10 stopped you browsing to UNC paths or running commands of any kind. In 10 it has the same effect UNLESS you use the search ...
1
vote
2answers
171 views

Our company claims that the DLP system can even monitor the contents of HTTPS traffic, how is this possible?

There is software installed on all client machines for DLP (Data Loss Prevention) and HIPAA compliance. Supposedly it can read HTTPS data clearly. I always thought that between the browser and the ...
1
vote
0answers
29 views

Difference between separate admin/standard user and admin with UAC/passwort prompt?

I just installed Windows 10 on a new PC and was wondering what is more secure. Assuming UAC is enabled on the highest setting and I'm the only one using the PC. a separate admin and standard account ...
-1
votes
0answers
41 views

How to disable password reset in Windows 10?

On the windows 10 lock screen, after entering a password incorrectly, there's an option to reset it (using a local, non-MS account). I'd like to disable this option (if I forget my password, I'm ...
0
votes
2answers
28 views

C:\Users Folder shared by default with everyone?- Security Fault?Compromised data?

yesterday i was very confused about finding out, that my C:\Users Folder under Windows 7 are fully shared. So i googeld out and found this TechNet article: https://technet.microsoft.com/de-de/library/...
-1
votes
0answers
29 views

Concerns about the order of the bytes in the stack

I'm experimenting with format strings vulnerabilities. In particular, I have a vulnerable C program like the following one: void test(char *arg) { char buf[256]; snprintf(buf, 250, arg); ...
6
votes
2answers
22k views

How to add a local file to trusted zone in IE8?

I want to add a file on my local drive (C:\something.html) to the Trusted Zone in IE8 (my OS is Windows Server 2003). The Add Sites Dialog box, does not seem to take entries for files on the local ...
6
votes
4answers
6k views

Configure OSX Firewall to Allow SSH Server?

If I turn on my OSX firewall, ssh is disallowed. If I turn it off, ssh can connect just fine. These are the settings from the ssh host: while I don't know what I'm doing, I figured that giving /usr/...
0
votes
0answers
23 views

Is the File History folder protected from attacks in the local computer?

These days many users are hit by cryptolocker attacks. I usually recommend family and friends to use Windows File history to get decent simple backups. What I am not sure about is how well Windows ...
1
vote
2answers
4k views

USB Drive access denied in Windows 7

I have this new flash drive in my office Win 7 machine where I am unable to copy files/folders. takeown /F E:\ says Access is denied and when I try to change/add users in the Properties> Security > ...
0
votes
0answers
40 views

Unknown history in my browser

I have recently found some weird research on my browser(also some nsfw) The first search is on a website wich is sharing various webcam streams like daily streams and stuff like that, this research ...
6
votes
2answers
6k views

Connect iPad to windows 7 VPN

My iPad keeps spitting out the error: "A connection could not be established to the PPP server." I am trying to connect it to a VPN I set up with Windows 7 as an incoming connection. On the iPad, I ...
-1
votes
1answer
54 views

Best way to prevent running malicious/virus macro on PC

I've got a question. Could You provide some hints/solutions about preventing running suspicious macro's in Office apps? What I've already know: there is a possibility to turn off all macro's without ...
0
votes
1answer
45 views

Secure communication between linux machines

I have four machines in network which can talk with password-less ssh to each other and themselves. Now, I want to make the communication between them secure. How I can create a VPN between them? In ...
3
votes
1answer
143 views

Why is my bitlocker data drive unlocked for a few seconds after boot?

To specify: why is the data on my bitlocker encrypted drive available for a few seconds after logging in? After a few seconds the system 'notices' the drives are bitlocker encrypted and need to be ...
1
vote
2answers
29k views

How to display the last user logged in Windows 7 PRO x64 logon

I want Windows to show the last user logged, so I only need to type my password, and I don't need to select my username. I thought it should be the default Windows behavior, but I've just installed a ...
1
vote
2answers
30 views

Can spammers use DKIM to check if my mail is active?

I installed DKIM Verifier plug-in in my Thunderbird mail client, just to see how this DKIM technology works. I don't really understand details of that technology, but it seems to check the signature ...
1
vote
1answer
4k views

Server Admin has insufficient rights to add SYSTEM DSN. Why?

My Logon ID is in the Administrator Group for a server. Yet, when I run bring up the ODBC Data Source Administrator by launching it as the Administrator and navigate to the SYSTEM Data Source tab, I ...