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

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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
627 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
625 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 ...
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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 ...
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8answers
49k 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 ...
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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
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2answers
503 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.
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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 ...
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3answers
1k 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 ...
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2answers
469 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 ...
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votes
3answers
2k views

Change permissions on folders (mass)

I've had some problems in my server and now I need to give some write-permissions on some folders, but I have a lot of folders to do it. My server is Windows Server 2008, and if I select all folder ...
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2answers
4k views

How to use ATA security on a hard disk in practice?

My SSD HD supports ATA Security. Does Macbook EFI and linux support it? I know hdparm does. Who will do the unlock at each bootup? Can I still set a password without erasing the disk? Update: removed ...
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8answers
592 views

Does using a certain kind of numbers make a good password?

Do special numbers (transcendental number, first few elements of a certain sequences and so on ...) make good passwords in terms of brute force breaking ? EDIT: Why am I asking this ? A friend of ...
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3answers
6k views

How can I leave the remote screen locked when I ARD/VNC/etc. to my Mac?

I'm currently using Jolly's Fast VNC and Mac OS X's built-in VNC server (System Preferences, Sharing, Screen Sharing) to access my iMac remotely. Here's my problem: When I'm using the iMac remotely, ...
2
votes
1answer
792 views

Scripting Bitlocker Decryption of a local hard-drive

In summary: I'm attempting to create a script that unlocks (decrypts) a hard-drive on the Windows 7 Ultimate local machine, then execute a couple of programs afterwards. I have a small SSD that ...
2
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2answers
1k views

Security warning in Win7 from the Links directory

Every shortcut placed to the Links bar (C:\Users\user_name\Favorites\Links) shows this security warning: Open File - Security Warning Name ... Type: Shortcut ... files from Internet etc. I can ...
2
votes
1answer
6k views

Windows-7 system files integrity

Is there a tool that will check integrity of system files in Win7 and search for invalid or changed ones. I would like to find which files were changed by rootkit installed on system. It would be nice ...
2
votes
2answers
19k views

“Trusted Sites” settings in Google Chrome

Is there equivalent of Internet Explorer Trusted Sites settings in Google Chrome? Here is the issue: When I download an excel file from a website using Chrome the file is marked as unsafe as seen on ...
2
votes
4answers
202 views

Practices/tools to remove personal data from a computer

I'm leaving my current job and want to remove my personal data from the Windows computer I was using. The way I want to do this is to remove my user from the system and erase my directory under ...
2
votes
3answers
1k views

What's the easiest way to detect and delete “Flash Cookies” [duplicate]

Possible Duplicate: How to automatically remove Flash history/privacy trail? Or stop Flash from storing it? This article has some disturbing information on how "Flash Cookies" even ...
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vote
3answers
19k views

How do I remove a usage restriction from a PDF file?

I have made usage restrictions to a PDF file and protected it with a password. Now I would like to remove the protection to allow my self to do more with the document. Doing a Google search for ...
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vote
3answers
1k views

How to lock Windows screen on startup? [duplicate]

I like to go get coffee while the computer starts. However we have a policy that says the screen must be locked when away. How can I make sure that the screen locks immediately after logging in?
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2answers
154 views

Tracking information on HTTPS connection

My organization uses cyberoam firewall. They are monitoring all activities including my search text in Google, Wikipedia etc. So recently i changed to HTTPS versions and now using HTTPS connections of ...
1
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1answer
414 views

Are the Windows 8 Password, Pin, Picture Password options all equally secure? [closed]

Windows 8 allows me to log in with my Microsoft Account username and password. But Windows 8 also lets me setup a 4 digit pin. It also lets me setup a three gesture touch password. These are ...
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3answers
1k views

How do I know whether my Debian is being hacked/infected?

My laptop seems to be acting rather weird - saying that another person is logged in when I try to shut it down (or maybe it likes being turned on). So how do I know whether my Debian laptop is being ...
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vote
1answer
199 views

Can Windows based computers ever be secured? [closed]

In light on this excellent article series by Ars regarding the black security work by HBGary - HBGary claims to have coded several rootkits and had access to 0-day exploits that could compromise a ...
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2answers
11k views

how to grant access to a folder using cacls

I have revoked a permission for a folder test using cacls. cacls d:/test /D adsd14 Now I trying to reassign permission to this folder using the same command. cacls d:/test /E /G adsd14:F ...
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2answers
661 views

How does Antimalware Doctor infect computers?

I didn't do anything stupid like run random .exe or visit questionable websites, but as I was just Googling I get infected by Antimalware Doctor. At that point I just shutdown my computer and ...
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2answers
1k views

Linux File Permissions & Access Control Query

Let's say I am user bob in group users. There's this file: -rw----r-- 1 root users 4 May 8 22:34 testfile First question: Why can't bob read the file as it's readable by others? Is it simply ...
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2answers
3k views

Allow one Windows user to only execute 2 applications

I'm using Windows 8 Pro. I'm trying to create a very limited Windows account. The account will only have: Remote Desktop Access Shell replaced by our own in-house application Access to the one FTP ...
0
votes
4answers
3k views

Securing Windows 8 against changing utilman.exe to avoid login bypass?

Is there a way to secure Windows 8 against this login bypass? Basically an administrator can rename the utilman.exe (for example, to utilman.exe.bak) then copy cmd.exe to be utilman.exe, then at the ...
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1answer
4k views

Resolving “HttpAdaptor JMXInvokerServlet is accessible to unauthenticated remote users” vulnerability

Recently our security info team has determined there is a vulnerability in one of our systems. Vulnerability description: JBoss HttpAdaptor JMXInvokerServlet is Accessible to Unauthenticated ...
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2answers
281 views

Program to wipe HD? [duplicate]

Possible Duplicate: Securely format a hard drive How to wipe a USB hard drive What is a freeware app i can use to wipe a HD? I have two 1) My external which is <1yr old and is ...
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2answers
2k views

Is securing Wifi with MAC Filter enough?

I have a MAC filter in place for everything that connects to my router. I also have WPA2 on the wireless. When a friend comes around, I tell them the password (I trust them), they type it into their ...
9
votes
6answers
5k views

Port scan revealed port 1111 open. What is it?

I am new to systems administration and have a new server running a website with http (at port 80), https (at port 443) and ssh (at port 22). I did an nmap port scan using my personal laptop and other ...
9
votes
4answers
421 views

If a “forgot your password?” page emails your old password, is that definitive proof that they have stored it in plain text?

When a site emails your old password, as opposed to requiring you to reset it on the site, I'm wondering what that implies about their security measures. Does this mean that they store the password ...
9
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4answers
11k views

Lock Mac after N mins of inactivity?

Is there a mac app that can lock the screen after N minutes of inactivity? Preferably N mins after the screensaver has kicked-in. Locking when the screensaver comes on is annoying - I want my ...
8
votes
2answers
1k views

What does Trusteer Rapport do?

Recently, both of my banks have been trying to foist Trusteer Rapport on me when accessing their online banking services. I haven't downloaded it because I can't figure out what it actually does, and ...
8
votes
4answers
2k views

If I use an SSH tunnel to get around a firewall, what does the sysadmin see?

I use an SSH tunnel for the port my browser uses to access the internet. The result is I get around the firewall my network uses, which prevents me from using many sites I want to use (facebook, ...
8
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2answers
24k views

Lock your computer after 5 minutes of inactivity

I know you can automatically Sleep and Hibernate your computer with a timer. But these affect running programs and stop downloads ... so I was wondering if there is a way to automatically Lock your ...
6
votes
4answers
610 views

How to determine the entropy of a password

How can I tell if a password has good enough entropy to prevent brute-forcing on a realistic timescale? For example, if I have the following password, how can I determine if it is strong enough to ...
6
votes
3answers
1k views

Block domain, website, without waiting for localhost (hosts)

There is a related question here. I can use Administrator, install extra software, whatever needs to be done. My problem is: I can't block websites entirely. Like in AdBlock Plus, you add a rule ...
6
votes
1answer
4k views

Using a decoy operating system, with another OS hidden by TrueCrypt?

TrueCrypt provides an option to use a hidden operating system. This works by having a decoy operating system residing on partition 1, and using partition 2 as (encrypted) data storage for the decoy ...
5
votes
1answer
1k views

Easy way to transfer a private key to another machine?

ssh-copy-id makes it easy to transfer a public key to a remote machine. Is there any equivalent tool for moving a private key? update Don't do this! (see answer)
5
votes
6answers
1k views

Secure setup of home wireless network

How to configure home wireless network to ensure that it is sufficiently secured and at the same time its usability is not restricted. EDIT Just to clarify by "usability is not restricted" I meant ...
5
votes
2answers
1k views

How can I prevent file copy in my usb stick?

I want to prevent other users of copying my files from my usb stick. Is there any method to do that?
5
votes
2answers
910 views

I want to make Macintosh Security Settings Location-Aware and Automatic

I have a Macbook Pro that I take from home to work to coffee shops to hotels. When I am at home, I want it to not require a password except after 4 hours of inactivity. When I am traveling, I want it ...
5
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3answers
2k views

Can 'Switch User' in Windows 7 work with Active Directory?

In Windows 7 you can 'Switch User' to anyone who's been configured locally on the machine. Can this be extended to allow someone to switch to a user defined in Active Directory (the same directory ...
5
votes
3answers
592 views

How Wifis and wifi security work?

I see tons of videos dealing with WEP cracking, but actaully none of them teach about how Wifis work. They are just a bunch of commands thrown at the screen. Where can I learn about the inner ...
4
votes
1answer
3k views

Run unsigned Java applets

Basiclly the same question as Allowing unsigned Java applications on all sites, but for Java 8, where I get the pleasure of seeing this screen: Unsurprisingly, this breaks things for me. Is there ...