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

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6
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3answers
1k views

Worms vs Virus what's the difference? [closed]

I don't understand very well the difference between viruses ans worms, it seems that worms don't need any host to duplicate himself. But somebody can explain it? It means that a worm IS a soft? and ...
33
votes
3answers
19k views

Can admins monitor my activity locally even when I use a VPN?

My school has one of those super overreacting web blockers (specifically Fortisnet) that blocks things that should be accessible by a high-school senior trying to research projects. Despite many ...
20
votes
7answers
52k views

Windows 7 never remembers my password credential

Every time I need to connect to something in my company I get a dialog like this So I type in my password(this can popup when I am in IE 9 or outlook or whatever.) and check the box. Say I am in IE ...
16
votes
3answers
6k views

Do I need to have a passphrase for my SSH RSA key?

Before I started at my current job (at a small business), my office had no firewall on the network and literally nothing was ever being backed up. Now that I've signed on as a dedicated sysadmin / ...
15
votes
6answers
5k views

How can visiting a webpage infect your computer?

My mother's computer recently became infected with some sort of rootkit. It began when she received an email from a close friend asking her to check out some sort of webpage. I never saw it, but my ...
11
votes
2answers
6k views

How to find out when a disc (DVD) has been written/burned?

Is there a way/tool to determine the date and time when a disc has been written/burned with high certainty? This is about data forensics and should be a solid proof. I already tried IsoBuster, but it ...
10
votes
1answer
944 views

How to “jail” Java applications in OS X?

Is it possible to "jail" Java applications? My bank has an applet that requests "unrestricted access" to my computer. That makes me feels very uneasy. There should be a way to tell the java ...
8
votes
2answers
2k views

Is it okay to use an administrator account for everyday use if UAC is on?

Since I switched to Windows 7 about 3 years ago, and now using Windows 8.1, I have become familiar with the concept of User Account Control and used my PC the following way: a standard account which I ...
8
votes
3answers
16k views

Disable Windows 7’s “Open File - Security Warning” dialog for exe on local drive?

I am trying to run Eclipse java-galileo-SR2-win32 when I get open-file-security-warning. The files are just extracted from a zip file and put into a directory ...
7
votes
3answers
7k views

What is the SYSTEM group in Windows 7?

I want to disallow access to a drive in Windows 7, to all the users except myself (admin). So I have deleted all the users and groups in the drive's Security dialog but I am not sure whether I should ...
7
votes
3answers
21k views

Windows 7 : Any way to disable “show caracter” in WIFI network properties?

Here's my issue. I'm working in a school as IT Tech and I'm currently planning to roll out Windows 7 on students laptop. The issue is : When you go to the properties of a WIFI network, you have the ...
6
votes
5answers
75k views

How to avoid Windows Genuine Advantage for an XP update?

I am about to apply updates to a windows xp installation I have not booted in a couple of years. When going to update.microsoft.com, it forced me first to accept an activex installation and now it ...
4
votes
2answers
360 views

How do I distinguish between these two certificate situations?

Situation 1 (safe): Website was vulnerable to heartbleed and using a certificate not valid before 2012-10-21 Website upgraded to an unvulnerable version of OpenSSL Website re-keyed and got a their ...
4
votes
2answers
1k views

Transparent screensaver for linux?

I want to have a few console windows running tail -f on logs. Unfortunately this means that anyone with access to the computer can press Ctrl+c and have shell access. So I want to lock the screen ...
4
votes
3answers
12k views

How secure is Skype?

I use Skype at work though sometimes for personal use and I am worried anyone can sniff network packets and find out what I'm typing or maybe the network admin can read conversations on the port Skype ...
4
votes
7answers
12k views

Disk wiping other than DBAN

Sometimes using DBAN takes several days to wipe a disk. What alternatives do you have experience with that work within a few hours and offer the simplicity of DBAN? I am mainly interested in free ...
3
votes
2answers
2k views

How to schedule Motion detection

I've just discovered Motion and it works like a charm.. My only problem is that I'd like it to be active only during night-time, but there's no parameter for scheduling.. I think I could write a ...
2
votes
1answer
610 views

http Redirect to https Sometimes Leads to “this page contains other resources which are not secure”

In Chrome (though I may have seen similar behavior in other browsers), type in http://www.google.com. You will always be redirected to https://www.google.com. Usually when I do this, I get the good ...
2
votes
1answer
5k views

Reconfiguring a WiFi Access Point's wireless settings through WPS?

As you may know, WiFi Protected Setup (WPS) has recently been broken. I downloaded and tested Reaver-WPS, the tool that implements the WPS attack. The tool's README file states: Reaver performs a ...
2
votes
6answers
10k views

How to wipe a hard drive so that it's safe to recycle (while keeping the recovery partition intact)

My aunt and grandparents have some computers that they want to get rid of, all of them have windowx-xp and a recovery partition (which allows them to restore the computer to factory settings). So what ...
2
votes
1answer
5k views

Scan network for writable shares

I have a small-business network with 30 Windows XP machines on a single subnet and in a simple workgroup, not a domain. I would like to put a process in place that scans the network for writable ...
1
vote
1answer
1k views

Windows method to detect ARP Poisoning in my local network (LAN)?

(This question comes from this thread, and is intended to remain as a reference question/answer pair for more generic ARP network detection not limited to WiFi, or without the need of the specific ...
1
vote
1answer
443 views

What alternative security measures are there to full drive encryption (for performance reasons)?

I'm evaluating full drive encryption using Truecrypt on my Crucial M4 SSD on Windows 7 32bit Pro on my Toshiba NB100 Atom N270 Netbook. I've encrypted this and noticed an increase in the boot time ...
1
vote
1answer
574 views

What is the simplest way to use svn repository through firewall without compromizing the security?

I have a multiple Win xp/7 PCs in a network that have no Internet access. All traffic is routed through a firewall PC (latest ubuntu LTS, without admin). This firewall has limited ports open to ...
45
votes
4answers
3k views

Should I install Internet Explorer updates although I disabled it?

I have disabled Internet Explorer in the "Windows Features" dialog. Nonetheless Windows Update alerts me that there are security updates for IE. I am aware that I cannot uninstall IE and it remains ...
38
votes
8answers
15k views

How safe is Firefox password manager?

I have been using the Firefox password manager for long time, but never checked/verified how secure it is.
37
votes
12answers
6k views

What is the value of MD5 checksums if the MD5 hash itself could potentially also have been manipulated?

Downloads on websites sometimes have an MD5 checksum, allowing people to confirm the integrity of the file. I have heard this is to allow not only corrupted files to be instantly identified before ...
11
votes
7answers
6k views

Why is MAC-based authentication insecure?

Most wireless routers can use MAC-based authentication as part of their overall security scheme. It seems like a good idea, but I've heard that it is very ineffective, because it's easy to spoof MAC ...
8
votes
1answer
1k views

How can I encrypt the swap file under Windows 7?

Mac OS X has the ability to use "secure virtual memory", meaning that anything from RAM that is swapped out to disk is encrypted. This improves security by making sure no passwords / keys are ever ...
8
votes
2answers
9k views

Is Gtalk communication encrypted?

What is the level of security offered by gtalk against eaves-dropping?
8
votes
4answers
8k views

How to run Firefox in Protected Mode? (i.e. at low integrity level)

I noticed that Firefox, unlike Chrome and Internet Explorer, doesn't run in the Low Mandatory Level (aka Protected Mode, Low Integrity) Google Chrome: Microsoft Internet Explorer: Mozilla ...
7
votes
2answers
9k views

Windows Defender vs. Security Essentials in Windows 8

What is the difference between Windows Defender on Windows 8 and Microsoft Security Essentials? They practically look alike, so is there a need to install Security Essentials?
7
votes
3answers
28k 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 ...
7
votes
4answers
3k views

Would you setup a DMZ at home?

From a security point of view, what are the benefits of going the whole hog of setting up a DMZ at home if you plan on running a low traffic (unpopular) website from there? There are a number of ...
7
votes
3answers
846 views

saving and searching encrypted mail

I often send and receive gpg-encrypted mail. At the moment I use thunderbird + enigmail (in linux) to do that. As far as I know there is no way in thunderbird to find all encrypted messages which ...
6
votes
2answers
2k views

Are anti-static wrist bands really safe?

Is grounding oneself using anti-static wrist band (connected to ground wire & having a protective resistor) still dangerous in case a very high current flows through the ground wire (due to some ...
6
votes
3answers
360 views

security concerns in dual-boot Linux, Windows system?

I plan to install Windows Vista on my second hard drive partition, with Ubuntu Hardy remaining on the first partition. How likely is it that any security holes that may exist in Vista could allow ...
6
votes
6answers
2k views

Is it safe to put a Mac directly on the internet?

In the past I have always run a NAT router between my Windows PC's and the internet. I'm wondering if I still need this or whether the OSX firewall is good enough to let me put a Mac directly on the ...
5
votes
2answers
9k views

“Cannot connect to the real Gmail.com”

Dunno what happened, but suddenly I cannot connect to Gmail from Chrome on this computer: Under "more" it says: What does this mean? gmail.com normally uses encryption (SSL) to protect ...
5
votes
6answers
595 views

Run user code safely

I have to mark C code and part of that involves running and timing their submissions. The problem is that their code then runs as me and they can in principle do whatever they like using my ...
5
votes
2answers
1k views

Secure PC-to-PC voice call without going through a server [closed]

I want to voice-chat to a friend over the Internet. (Video would be a nice bonus.) I want the conversation to be private and I do not trust Skype, Google, etc., so I want it encrypted end-to-end. ...
5
votes
3answers
619 views

Chrome Saved Passwords security issue

If I save a password in Google chrome someone else can easily see the password from Setting -> Advance Settings -> Manage saved passwords -> Show (in required password field) and use it ...
5
votes
2answers
623 views

Why use a VPN connection? [closed]

I've been reading the news about Lulzsec and I was wondering why they use a VPN before connecting to Tor or proxy servers? The latter 2 can be used for hiding your identity so why is the VPN used ...
5
votes
5answers
18k views

Windows Server 2008 Create Symbolic Link, updated Security Policy still gives privilege error

Windows Server 2008, RC2. I am trying to create a symbolic/soft link using the mklink command: mklink /D LinkName TargetDir e.g. c:\temp\>mklink /D foo bar This works fine if I run the command ...
5
votes
8answers
47k views

Is software from NCH Software safe? [closed]

I just downloaded Fling from them (an automatic ftp uploader) having been looking for a good app to do this for a long time. It just seems to good to be true to finally stumble across what looks to be ...
4
votes
1answer
15k views

Webcam automatically takes picture when the computer wakes up

Is it possible to have the webcam take a picture if my computer is woken from sleep mode? I have seen that there are some programs with motion detection, but I would prefer a method that takes a ...
4
votes
2answers
499 views

How can I prevent Desktop Users from viewing the wireless password?

The title says it; I want to prevent users from viewing the wireless network password on Ubuntu. It's easily viewable through the included application called seahorse.
4
votes
6answers
7k views

Safari keeps asking permission to access the keychain

Normally when I save a password in Safari it will get added to my login keychain without fuss (assuming that it is already unlocked). But after I set a a master password the default keychain was ...
3
votes
3answers
2k views

How does a downloaded ISO get corrupted? [duplicate]

Possible Duplicate: Is it possible to get corrupted download with http? I downloaded an ISO for fedora. Went to install it as a VM. It failed 5 times the installer. The warning for the ...
3
votes
2answers
452 views

Weird hits on port 2703

I'm getting these periodical console messages on my Mac: 7/22/11 8:01:03.925 AM Firewall: Stealth Mode connection attempt to UDP 10.0.0.1:2703 from 91.143.232.133:15881 7/22/11 8:01:05.885 AM ...