Security in terms of "computer security", such as protection of information, protection from theft or data destruction.

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32
votes
6answers
32k views

scp to remote server with sudo

I have a file on server A (which is behind a NAT so not directly addressable). The file needs to be copied to server B in a directory restricted to root. I have an account on server B with sudo ...
22
votes
3answers
2k views

Subverting the execute flag on Linux systems. Why is this possible?

Whilst reading this, I found the following exploit: % cp /usr/bin/id ~ % chmod -x ~/id % ls -al ~/id -rw-r--r-- 1 edd edd 22020 2012-08-01 15:06 /home/edd/id % ~/id zsh: permission denied: ...
11
votes
5answers
120k views

Access denied even though I'm an Administrator?

My user account on Windows 7 is part of the Administrators group which has a full control permissions on C:\inetpub\wwwroot: However, when I try to create a folder in it, I get the "access denied" ...
10
votes
7answers
1k views

Browser for paranoid people?

Is there a web browser out there that is more suited for paranoid people? Why would you choose it/ What feature would your ideal paranoia browser have? For instance i would want one which Sends NO ...
8
votes
2answers
4k views

How does the “Steam” platform work? Is it DRM? Can I trust “Steam”-powered software? [closed]

UPDATE: This question lives on at gaming.stackexchange.com. So – I just bought the new game Supreme Commander 2. This question is not about the game, but about the online software ...
4
votes
18answers
902 views

Is free security software as good as paid security software? [closed]

I mostly use free security solutions to protect my home PC, but I wonder if I would get better protection from a paid solution. I prefer the free software, since I can have multiple applications ...
21
votes
3answers
4k views

Is it possible to store arbitrary data in an image file?

Is it possible to store arbitrary data such as documents or a program in the form of an image file, such as a PNG image? My concern is that someone could encode data for use by malware into an image ...
16
votes
4answers
31k views

Malicious “confirm navigation” dialogs?

Some sites, like StackExchange, pop up an "Are you sure you want to leave this page?" dialog when you try to leave under certain conditions, such as if you have a post you haven't finished editing. ...
10
votes
2answers
9k views

Finding the physical local path associated with a Share UNC folder

Let's say I am Admin on a server named "Server1" and a share exists using the following UNC path \\Server1\Share1 If I remote to Server 1 and log in as Admin, how do I find the physical drive ...
10
votes
7answers
289 views

How to browse safely?

Just curious. What are the best practices and tools you use for safe Internet browsing? How to stay away from spywares, adwares etc? Update: For my work, I use Internet Explorer on Windows and ...
10
votes
1answer
8k views

Permission to make symbolic links in Windows 7?

How can I grant a particular user the permission to create symlinks in Windows 7? I've searched through "Group Policy" and Google, but haven't found anything. On a side note, is there a way to ...
7
votes
8answers
24k views

Firefox: This connection is untrusted + Behind corporate firewall

I've seen some similar issues strewn throughout Google's results about this, but none seem to be corporate-specific. I continually get the 'This connection is untrusted' screen every time I attempt ...
5
votes
3answers
19k views

Find out if a PC has a TPM chip installed?

I have several Windows XP laptops that I need to check to see if they will work with Bitlocker if I install Windows 7. If they have a Trusted Platform Module (TPM) chip then Bitlocker should work ...
5
votes
5answers
995 views

Stopping kids from using a machine for illegal activites?

How do I stop someone using my computer from going to adult websites or from opening any inappropriate material like adult videos or images which may may come via pen-drives or CD/DVD? Is there any ...
4
votes
5answers
1k views

On unencrypted public wifi, what kind of real danger am I in?

First, my setup Windows 7 Home Premium use the built-in firewall UAC on max in Windows' wireless network settings for public networks, besides the default settings, I have 1)set to block all media ...
3
votes
1answer
3k views

NTFS: prevent/deny directory delete in a otherwise “personal” folder

I have a directory shared via CIFS from a Windows 7 "server". No domain: just simple workgroup. My clients access this directory via LAN via "Standard User" (no "Administrator") accounts on the ...
15
votes
10answers
112k views

Is there a way I can password protect a dropbox directory on my work pc?

I use dropbox a lot, and I'd like to start using my Dropbox account on my work PC, however I want to prevent anyone else from being able to access the files in my dropbox folder other than me on my ...
9
votes
3answers
14k views

Windows 7 equivalent for ntrights.exe

What is an equivalent for ntrights.exe on Windows 7? I need it to be able to be run from the command line.
8
votes
2answers
29k views

How to get the real IP address of someone using a proxy?

I was researching digital goods and security when I stumbled upon this company. One of the services they provide is "Real IP". They claim to be able to get the real IP address of users even when ...
7
votes
7answers
2k views

Looking for a USB Thumbdrive / Flash drive encryption solution (not TrueCrypt) [closed]

I am looking for a USB Thumbdrive / Flash drive encryption solution. I have searched the net but I have never come accross a solution which meets the following: Must handle at least 4GB volume If ...
4
votes
2answers
1k views

If I write all zeroes or ones to a hard disk, does that effectively and securely wipe it?

If I wanted to completely and securely wipe a hard drive, could I simply write all ones or zeroes (or even just random zeroes and ones) over the entire disk to clean it? It'd probably take forever, ...
4
votes
3answers
25k views

How do I remove Folder Ownerships? (Windows 7 & Windows XP)

In our house we have about 5 PCs; no DHCP Server or DNS Server. We have a few portable backup drives (Western Digital WD1001FALS 1 TB drives) that we mount to Thermaltake SATA drive readers. Any ...
3
votes
2answers
11k views

What is the Windows 7 command-line to remove all remember passwords in Credential Manager?

We can remove remembered/cached passwords via Credential Manager as here and via a command cmdkey as here. I want to have one command that quickly clear all the passwords. How can we do that?
3
votes
4answers
3k views

How do I create a bootable USB Flash PcRepair Kit?

I do PC repair on the side and am looking to use a bootable flash drive as a PcRepair Kit. I'm also looking for anit-virus, anti-malware, Data-Recovery, Hardware testing. It would be great if it was ...
0
votes
2answers
1k views

XP Suddenly asking for password [duplicate]

Possible Duplicate: Remove administrator password? Is there any sane explanation for a client's Acer Aspire 1 netbook, running XP Home SP 2, suddenly starting to ask for a login password at ...
16
votes
5answers
2k views

Is it secure to give someone my laptop with my Dropbox folder saved on it?

My laptop contains my Dropbox folder (under my account). I want to give this laptop to my friend for some time, and he will be using another account. Is it possible that: He will be able to access ...
14
votes
1answer
654 views

Why shouldn't we open an image in an email?

Most email clients do not display an image by default in the content of an email. But I don't understand this yet. How can displaying image job attack the computer?
10
votes
3answers
1k views

Do end users need to do anything about the Heartbleed security bug? What?

I see in the news about the “Heartbleed” security bug. As an end user, do I need to do anything about it?
10
votes
5answers
11k views

Is it possible to encrypt home folder on windows 7?

Ubuntu and MaxOS has an ability to encrypt home folder in case laptop is stolen. Is it possible to do same thing on Windows 7? I need to encrypt home folder so it will be encrypted and decrypted ...
7
votes
1answer
3k views

non-interactive ssh sudo… prompts for the password in plain text

I'm running some non-interactive ssh commands. The ssh authentication is taken care of fine through the ssh agent, but if I run a command that requires sudo then the password prompt in my terminal is ...
7
votes
5answers
3k views

can a virus execute by itself?

is there any type of viruses can execute by itself after download then on the HDD without clicking on it?? if there is ..... can you refer me to any sites about them?
6
votes
1answer
3k views

Automatically lock screen on lid close in Windows 7

I'm a longtime Linux user, and I just recently got a laptop that runs Windows 7. I recently stepped away from my workstation for a few minutes, and returned to find, to my horror, someone else sitting ...
4
votes
3answers
13k views

Is it safe to use my mobile headset on my PC?

Is it safe to use my mobile headset on my PC or laptop? Will it damage my audio chip or corrupt any driver? In this site it says computers 2 TRS connectors, one for speaker and another for ...
3
votes
2answers
195 views

Having no password on windows 7 log in physically, but with password through RDP

I am trying to make my main desktop be able to reboot right into the desktop without asking for a password, but I still want to be secure when I'm accessing it remotely. No one is ever going to ...
3
votes
4answers
644 views

How to shred already removed file on modern filesystem? (randomize free space, journal, tails, … securely)

Consider the following: mount | grep home ... type reiserfs ... rm -Rf /home/user/over_9000_little_and_big_super_secret_files/ # oops, I should have shredded it instead. How can I properly and ...
3
votes
6answers
2k views

a safer no password sudo?

Ok, here's my problem - Please don't yell at me for being insecure! :) This is on my host machine. I'm the only one using it so it's fairly safe, but I have a very complex password that is hard to ...
2
votes
3answers
2k views

difference between chmod 777 and chmod 007

What is the difference between chmod 777 and chmod 007? if 'others' means everyone, doesn't that strongly suggest the truth that chmod 777 = chmod 007?
2
votes
1answer
1k views

openSuse full disk encryption

I'm a proud Suser. I'm about to reinstall 12.2 on my ASUS N76VZ (UEFI x64 laptop). Since I'm very sensitive about laptop security against theft or unwanted inspection, I chose to use BitLocker with ...
2
votes
1answer
14k views

How can I get around “error 0x80070522” when creating files in the root of the C drive (C:\)?

One of our customers has just found a problem when trying to create a file on the root of the C Drive (C:\), on a Windows 7 Professional PC. I know they shouldn't be keeping files here, but there is ...
1
vote
1answer
10k views

How can I disable the “Open File Security Warning” when I want to run downloaded executable files?

I would like to disable the "Open File Security Warning" that says "Do you want to run this file?" whenever I double click on an .exe I download. I have Windows 7 Home Premium, so I don't have the ...
1
vote
2answers
696 views

How to properly wipe a hard drive prior to resale? [duplicate]

Possible Duplicates: Hard drive wiping? Erasing data before selling a computer I'm going to be selling a few old hard drives and was wondering what is the correct way to wipe these hard ...
0
votes
6answers
495 views

How do you setup your parent's computer? [duplicate]

Possible Duplicate: How can I make my mom’s Windows PC bullet-proof? How do you set up your parent's computer(s), if you're the on-call computer expert ? Do you recommend linux, ...
9
votes
4answers
740 views

Is it possible to safely contain a virus - not letting it spread?

I need to run a program, but I don't trust the author. I think it is infected with spyware or viruses, malicious files. I scanned it, did n't find anything, but still not feeling good about it. So I ...
9
votes
5answers
4k views

Are .docx or .pdf files potentially dangerous?

Just a general question of computer security - if I download a .pdf or .docx from an untrusted source, can it seriously harm my machine/give a malicious user access to my information? Or is it ...
7
votes
2answers
389 views

Prevent applications from opening browser

Is there a free application out there that will intercept requests from applications to open a URL and prompt me as to whether or not I want the URL to be opened? (For instance, after Adobe Reader ...
6
votes
3answers
4k views

Is there a way to secure a powerpoint presentation against edits?

I have a few powerpoint slideshows I need to distribute, but I would like the receivers to not be able to edit them. They still need to be able to launch embedded links though. It seems like this is ...
6
votes
3answers
1k views

Can a computer be infected by malware through web browser?

Can a computer be infected when it accesses a malicious web page? Why is not a web browser 100% safe? What web resources, such as Java Script, Flash or a HTTP connection, can infect a computer?
4
votes
3answers
3k views

How long will Microsoft support Windows XP Professional?

I am using Windows XP Professional for some specific software programs. Now I read in the latest German CT-Magazin that Microsoft will fix big security problems until 2014. At microsoft.com is spoken ...
3
votes
1answer
473 views

Is it possible to find the origin of a virus?

Is there any method with which you can determine the origin for a given piece of malware in Windows? One of my PCs was recently infected with the PWS:Win32/Zbot.gen!AP password stealing trojan. Is ...
3
votes
2answers
324 views

Can a malicious Windows app disable my webcam light?

I have a webcam built in to my laptop with a little LED that lights up whenever an application uses the camera. Is this LED controlled on hardware level? If not, does Windows have special provisions ...