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

learn more… | top users | synonyms (1)

11
votes
8answers
29k 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 ...
11
votes
4answers
5k views

WebCam as a security camera

I am looking to mount a webcam to my laptop (which sits at home all day) to act as a security camera. I'd like to it to write the video to an external hard drive, which I can then review later. It ...
10
votes
7answers
2k 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 ...
10
votes
7answers
294 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 ...
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
4k 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 ...
3
votes
4answers
3k views

Internet monitor/filter solution for home network

I am looking for a simple and cheap way to monitor/filter internet usage on my home network. The solution should not be machine or OS specific, and it needs to be somewhat difficult to circumvent. I'...
19
votes
6answers
1k views

Should I worry about malware on Linux? [closed]

I don't run an antivirus on Linux ( most people I don't AFAIK ) and I'm not at all concerned about any form of malware or spyware or any other_bad_ware. Should I by concerned? Of course I don't ...
18
votes
9answers
130k 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 ...
15
votes
3answers
21k 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.
11
votes
5answers
7k views

Can a virus on a flash drive run itself without autorun?

Someone told me that it's possible for a virus to run itself from Flash memories even if autorun.inf is not present or this feature is disabled using gpedit.msc. He said a virus can run itself as ...
8
votes
2answers
42k 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
3answers
708 views

Security on wireless mouse and keyboard

At work I am using a wireless mouse and keyboard. I was sitting at my desk this morning wondering if and how they are secured against key loggers. What stops another device from listening to my ...
6
votes
4answers
21k views

Group Policy: Block access to \\localhost\C$

We have a restricted Windows 7 computer that hides and prevents non-admin users from accessing the C Drive using the following policies: Prevent access to drives from My Computer Hide these ...
3
votes
3answers
3k 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?
3
votes
1answer
12k 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 ...
3
votes
4answers
4k 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
717 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?
8
votes
1answer
6k 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 ...
8
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
7answers
2k views

Am I secure from network monitoring software if HTTPS is used?

I will be logging into my bank account and my personal email accounts at work. Its not banned at work, but I just don't want them to save/log a copy of whatever I do with these services. Especially my ...
3
votes
1answer
199 views

How to always allow insecure connection for a certain url in chrome?

For internal usage, we have a system using a self-signed insecure SSL certificate, making Chrome warn me on each session: Your connection is not private Attackers might be trying to steal ...
3
votes
2answers
250 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
722 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
4answers
2k views

brute force password guessing on SSH server isn't going to work?

I'm running an SSH server on my personal computer. The log had many people(or bots?) repeatedly trying to log in to my server (that is before I changed the default port), which made me a little ...
2
votes
1answer
16k 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
1k views

Thunderbird: Error: imap.server.com : server does not support RFC 5746, see CVE-2009-3555

I'm getting this error when checking my mail, and I can't download my mail. I recently updated Thundirbird yesterday, but it restarted and was working fine for many hours. I saw this question: How to ...
0
votes
6answers
519 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, firefox ? ...
7
votes
3answers
2k 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?
7
votes
2answers
708 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
5k 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 ...
5
votes
3answers
186 views

Understanding file permissions

What is the ending r for and the leading d for in file permissions on Linux? Example: drwxr-xr-x I know about the user, group, others part, and I know w=write, r=read, x=execute. But I don't know ...
4
votes
1answer
531 views

Encrypting a folder

I'm familiar with bitlocker, having been using it for a while, but I am looking at just encrypting a folder instead. But I just don't understand the options it's giving me. When I right-click a ...
4
votes
1answer
6k views

Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?

The AC adapter supplied with my laptop is designed to accept voltage in the range of 100-240VAC at 50-60Hz, but the AC cable that plugs into the adapter unit itself is only rated to 125VAC 7.5A 2.5A. ...
4
votes
1answer
4k views

Why don't you have to press CTRL+ALT+DEL to logon anymore in Windows 8?

In previous versions of Windows, you had to press Ctrl + Alt + Delete to logon, or to unlock a locked workstation. This was because this key sequence was recognized only by the OS and thus other ...
4
votes
4answers
53k views

Google chrome not accepting any security certificates

I've recently developed a problem with Google Chrome that's really annoying. I'm using Firefox at the moment with no problems whatsoever and it's the same with IE, so it's safe to say this problem is ...
4
votes
3answers
8k views

“Users” folder shared with everyone

Today I found something strange on my newly installed Windows 7 OS - my "users" folder C:\Users was shared and "Everyone" had full access... I disabled that and now it seems fine, however I'm a bit ...
3
votes
2answers
8k views

Open a direct file on the hard drive from Firefox (file:///)

I have a small PHP system I created for myself. This system contains a few .doc and .docx file documents. I want to be able to open them directly from the browser without downloading them. I created ...
3
votes
6answers
1k views

How did my computer get compromised?

How is it possible that my up to date install of Windows 7 with UAC enabled and Microsoft Security Essentials running became compromised, seemingly in a website drive-by? I've run ostensibly the same ...
3
votes
3answers
19k views

Does using Tor prevent my ISP/sysadmin from seeing what sites I visit?

Does using The Onion Router prevent my Internet Service Provider or system administrator from seeing what websites I visit?
3
votes
2answers
2k views

How to (re)enable the “New” context menu items for an administrator when right-clicking in a folder and selecting New > X?

I just migrated from XP x86 to Win7 x64 (clean install). I had a couple of data drives in my XP x86 system that I physically moved to my Win7 x64 system. When browsing a directory in any of the ...
3
votes
1answer
2k 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
7k views

How to limit internet traffic in some computers of my home network?

I'm sharing my home wireless network, using a DIR-655 Wireless Router with 3 other people (2 using windows machines and one use mac laptop, I also use a mac laptop). I need to know how can I limit ...
2
votes
1answer
375 views

Github for Mac installs a webserver, “github conduit.” Is that a security risk?

Github for Mac is a helpful app provided for free by the people at Github.com. It’s an Mac OS X GUI for simple operations with git, and works quite well. It turns out that when I visit a repo on ...
2
votes
2answers
2k views

WPA Password not remembered after a reboot

Every-time I reboot my laptop with WinXP, I have to re-enter my wireless password. I've looked but found no place to check to tell it to remember it. This worked at one time but I'm not sure what ...
2
votes
3answers
8k views

How to factory restore Windows 7 to prepare to sell laptop

I have a laptop that came with Windows XP. I upgraded to Windows 7 when it came out, and am planning on selling the laptop. Unfortunately, I think the Windows 7 upgrade disc got accidentally thrown ...
2
votes
3answers
701 views

How do I hide files inside of an image without using any stenganography tools [duplicate]

Possible Duplicate: Steganography software I want to hide files inside of a picture. The files may be music or video. Is it technically possible to do this? If so, how? I searched on Google ...