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

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How do I safely recover data from a compromised Mac OS X account?

One of the non-administrator accounts on my mac-book has been compromised. The password to the account has been reset, and I noticed some suspicious looking activity (the user was logged on to my ...
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1answer
3k views

Does having an SSL certificate make ssh/sftp connections any more automatic?

When I log in to a new machine (or from a new machine) using ssh/sftp, I get prompted with the "here's this random string of hex digits; should I trust it?" question. And, since I never have the ...
1
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2answers
709 views

How much safe is it to keep a desktop computer in sleep state overnight? [closed]

So far, I'm putting it into hibernate state overnight, but it takes way too much time to resume. Probably because of all the installed software and two virtual machines I'm constantly running on my ...
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3answers
38k views

How safe is port forwarding in general? [closed]

Say I have a few ports open for gaming. My questions are Can I be hacked if the attacker knows my specific external IP? Can hacker access my router and setting by getting through these ports? If so,...
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1answer
607 views

How can I set up two-factor authentication (use both fingerprint and password) on my HP Pavilion laptop?

I have an HP Pavilion dv6z-3000 laptop with a Validity VFS301 fingerprint reader. I'd like to set it up so that it prompts for both my fingerprint and password, but I can't find any such option for ...
2
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1answer
146 views

Should you disable SSH login with root on your server? [closed]

Someone told me to disable SSH login with root for security reasons. Might I ask, why is this necessary, exactly? Wouldn't setting a very long (20+ chars long), full-printable-ASCII range, random ...
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3answers
2k views

Is there a way to measure an employee's computer usage?

I have been asked to see if a user is being productive. Windows 7 doesnt log much in the way of computer usage, but I was thinking it would be possible to see how long the computer is in a locked (...
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1answer
157 views

How do I permanently set the referrer in Firefox?

I know I can disable Network.http.sendRefererHeader to 0 in about:config, and using the RefControl extension I can set it on a per-site basis (or using wildcards, e.g. *.com, *.org). Is there a way to ...
4
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1answer
2k views

How do I remove a user account which is invisible on the logon screen or user manager for Windows 7 Home Premium?

I am running a Windows 7 Home Premium machine with one administrator and one standard user for my son (14). My son has a standard account limited by parental controls for web content (porn etc.) My ...
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1answer
1k views

List of folders where security group grants access to (Windows server 2003)

My question is very simple and I think many people are trying to find out answer so please try to help. In Active Directory, when administrating server, you can create or list security groups but the ...
0
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3answers
532 views

Duplicate MAC but different IP on home router

Would it be possible to have duplicate MAC addresses but different IPs on a home router? My questions are listed below. I don't have computers with the same MAC. The second connection displays no ...
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2answers
11k 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 ...
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1answer
221 views

Mac OS X admin password reset utility

Is there any way i can reset my mac admin password with a tool like chntpw. Booting from a Mac OS X Install CD is not an option, since the firmware password is set. Are there any simple ways of doing ...
1
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0answers
77 views

How secure are Opera browser's add-ons? [closed]

I'm wondering how secure Opera browser's add-ons are. I'm assuming they are limited in terms of what they have access to / what they are allowed to send to their creators, and that the extensions ...
12
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6answers
2k views

How do I efficiently generate and validate file checksums?

I'd like to be able to capture and validate checksums for large-scale collections of files, typically nested within a complex directory hierarchy. Does every single file need a checksum? Are there ...
2
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1answer
328 views

Is HTTPS connection hijacking possible?

This really bothers me a long time, because.. to encrypt / decrypt data you first need to send a encryption key / decryption key (on an unencrypted connection) to the computer you are comunicating ...
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0answers
743 views

How to change the UI language in the Flash player Global Security Settings panel

I am a software developer and I want to make screenshots of specific settings in the Global Security Settings panel of the Flash player in Firefox. I have a German locale Windows installation (...
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6answers
1k views

How do I firewall a machine against the local (wireless) network while still allowing the machine to route internet traffic?

I have a shared DSL connection, and I know that some of the users constantly get their computers infected, so I worry about network security. My computer is the only one wired to the modem (which is ...
2
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4answers
495 views

how to add remotely controllable machine to home network, without sacrificing network security?

The following setup: I would like to add a machine (running windows server 2008 r2) to our home network, such that this machine has access to the internet, and such that it can be accessed (with full ...
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0answers
65 views

Only permit traffic to specific domains on Windows 7

Three domain-member boxes are sometimes used for proctoring exams. Unfortunately some instructors host their exams on external sites, so blocking all WAN connectivity is not a solution. What software ...
1
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3answers
10k views

How do I ssh-login into my Mac as root?

For some reason I can't login as root into my Mountain Lion 10.8.2. I've already edited /private/etc/sshd_config file by removing the comment from PermitRootLogin yes and restarted Mac. Still it ...
1
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1answer
699 views

Antivirus in Virtual machines to scan host machine

I have a host Win 7 system, with a virtual machine running Win XP installed on the host. I have an antivirus installed on the host and also on the virtual machine. Now, my host machine has to deal ...
7
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2answers
15k views

How do I make my folders inaccessible by other administrator accounts on Windows 8?

I want to make my folders private, so that they can only be accessed after logging in with my own account, but be inaccessible by other local accounts, even the administrator accounts. I have a PC ...
0
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1answer
633 views

TCPview: Some strange process?

I just install the TCPview to check if there are any abnormalities in my computer connections, and there are something looks strange: There are 2-3 process that show the following status from time to ...
0
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1answer
73 views

Sandboxing of files without a new user

Is it possible to isolate certain folders from all programs except one, without creating a new user? A bit like a reverse sandbox. Specifically I want to protect the .bitcoin folder from being ...
2
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1answer
487 views

How would Apache or Compressed HTTP react to a zip bomb?

inspired by Compress a 1GB file into 200_MB? and the related comments: Many webservers today use a zipped HTTP Version (Gzip afaik). How would Apache or any other server react to a zip bomb? Since ...
2
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1answer
63 views

Network Problems of Ethernet? [closed]

At a school I used to attend, we were told by our instructors that connecting our laptops to the network via ethernet was against their computer use policy, and apparently resulted in some tech person ...
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3answers
2k views

How do I access a website blocked in my country?

Last year there were numerous cyber attacks on Israeli banks, so they just blocked access to all foreign countries. Is there a way to bypass that? I tried using a proxy, but it didn't work out.
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3answers
1k views

How safe is it to connect to a random WiFi network? [closed]

I have my google account setup on my phone and tablet. If I go to some place which has free WiFi access like an airport, or a bus, or even starbucks, how safe is it to use their WiFi service? Will ...
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2answers
92 views

How to wipe the HDD in the most convenient and easy way?

I want to run in the background software/command (if possible) that know if I press some combination of keys in the KeyBoard it's will wipe all of my HDD data (much likely in the movie HITMAN). What I ...
2
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3answers
305 views

Remote Desktop password safety

If I access my computer with Remote Desktop from another computer, is my password stored in any way on that computer? Assume that the client computer is "clean" (no virus, malware, keylogger, etc). ...
0
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1answer
988 views

How to completely turn off Address Space Layout Randomization (ASLR) in Ubuntu 12.04?

I am trying to turn off Address Space Layout Randomization (ASLR) in Ubuntu 12.04. What I have done is set randomized_va_space to 0 but still when I am looking at /proc/<process_id>/maps for my ...
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3answers
463 views

Can Windows shares potentially be accessible from Internet?

I've set up a Windows homegroup and made some folders shared between the computers on my home network. Strangely enough, it's not the automatically generated homegroup password (which is quite hard) ...
4
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1answer
12k views

What happens with my encrypted files on Synology when it is stolen?

I have a Synology NAS. It has the possibility to encrypt folders. I have enabled it via the web interface. But one of the reasons for actually encrypting these files is that they should be protected ...
0
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2answers
362 views

Run a python script for entering RSA passphrases for Unix systems

I would like to know if is there a way to put a new "Layer" when the SO(preferentially a Ubuntu or a Mac OS X) asks for the passphrase of a rsa key. How it normally does: Use ssh; prompt the window ...
7
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1answer
3k views

Why is LastPass Pocket not recommended? [closed]

Just noticed on LastPass Pocket download and support pages, it's mentioned that LastPass Portable is recommended over using LastPass Pocket. However, no explanation is provided on any of those ...
0
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1answer
45 views

Gate Keeper Behaviour

I have recently installed Mountain Lion (clean install) and my gate keeper is set to "Mac App Store". I found an old app downloaded on my mac, it was a game named Tribbi.app when I tried to open it, ...
2
votes
4answers
1k views

Is it possible to get any virus with (javascript, flash, iframes) disabled?

I'm expert at computers so I dont fall for small tricks like phishing and such. I just wanted to know if there is any way you could actually get infected without (iframes, javascript, flash) enabled ...
0
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1answer
341 views

How can I lock a Windows and Linux (Ubuntu) desktop remotely (mobile, tablet)?

Often in a rush, I tend to forget to lock my desktop and rather than wait for the screensaver to kick in to lock the screen, is there a way I can use my mobile (Android, iPhone) or tablet (Android, ...
0
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0answers
94 views

Windows 8 locking files

I have my UAC settings dialed down to 0 (lowest setting), but when I uninstall a program it wants to delete some profile data stored in my user directory. Win8 denies access to the installer trying ...
0
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3answers
206 views

How is public key authentication secure? [closed]

Many articles suggest that using public key authentication is more secure than using a password. References: http://www.linuxquestions.org/questions/linux-security-4/is-ssh-keys-authentication-more-...
0
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1answer
179 views

Is there any reason to upgrade from a Linksys WRT54G from a security perspective?

I'm currently running a Linksys WRT54G with the latest firmware. I was recently thinking about newer routers and I realized that aside from new features (usb drives, media, etc) and faster speeds (802....
0
votes
1answer
139 views

Web cam as a security camera? [closed]

I would like to monitor my house when I am out with a camera. I was thinking I could use a webcam. The problem is I don't want to leave my PC turned on just to let web camera records the video. Are ...
0
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3answers
207 views

How can I determine if a link is safe?

I received an email (via GMail) containing single URL link. For the purpose of this question, it is irrelevant whether link came from someone I know, because origin can be spoofed or faked. I suspect ...
0
votes
1answer
376 views

How can I prevent Ask Toolbar and Ask Toolbar Updater from installing when jucheck installs an update? [duplicate]

I know about Can I permanently prevent Java security updates from installing Yahoo Toolbar?, but the accepted answer (use offline installer) keeps the Java auto-update (jucheck.exe) from downloading, ...
3
votes
3answers
4k 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
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1answer
336 views

Google Chrome and jabber connection

I just see in netstat output that Google Chrome established jabber connection to Google IPs. Anybody have ideas why? GMail chat is off. root@debian:~# netstat -tnp Active Internet connections (w/o ...
1
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2answers
3k views

Delete suspicious file protected by wininit.exe

Today I've ran Task Manager and saw suspicious activity of sc.exe and conhost.exe. I run ProcMon.exe and I saw that sc.exe was started by BrowserProtect.exe which is located in this folder: C:\...
1
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1answer
2k views

What does mean the security protection of PDF files?

Adobe Acrobat Reader presents 9 "document restrictions" security properties. I'm guessing some of these properties are not used because Foxit present only 8 of them. What's even more confusing is that,...
0
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1answer
66 views

If I combine my windows 7 pc and a dedicated VM ubuntu server, will this jeopardize my pc?

I've googled the internet and haven't been able to find a clear answer. Mostly because people keep their dedicated servers separate from their pc, let alone run it in a virtual machine. So in what ...