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

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3answers
57 views

What is the theory behind securely delete files on a SSD?

Assume that I have a file which I want to securely delete in a ssd. If I do a regular detele and then fill all unused space with a random data file, would this works?
1
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3answers
2k views

How to lock Windows screen on startup?

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?
14
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6answers
12k views

How to securely delete files stored on a SSD?

From a (very long, but definitely worth to read) article on SSDs: When you delete a file in your OS, there is no reaction from either a hard drive or SSD. It isn’t until you overwrite the sector ...
0
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0answers
64 views

How to remove Microsoft Account?

I have an account that I don't use anymore. I would like to remove it in order to test some Microsoft Azure coding features. The problem is that I can't remove the account. I navigate to the account ...
3
votes
2answers
3k views

Jail user to home directory while still allowing permission to create and delete files/folders

I'm trying to give a client SFTP access to the root directory of their site on my server (Ubuntu 10.10) so they can manager their website themselves. While I have been successful in jailing a user to ...
3
votes
6answers
8k views

Interpreting Netgear wireless router security logs

I have a NetGear RangeMax Dual Band Wireless-N Gigabit Router, model number WNDR3700. It's been working fine, but I recently logged into it by pointing my web browser towards 192.168.1.1 and typing in ...
0
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0answers
4 views

Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
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2answers
18 views

My Linux (Ubuntu 14.04) Box is being hacked [on hold]

for a while now i've noticed that my machine operates itself by automatically popping dropdown menus in gnome and sometimes my firefox browser mysteriously opens new windows despite me having a script ...
0
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1answer
25 views

Is blocking / allowing by IP using .htaccess (or equivalent) enough to secure a resource on a web server?

Currently in the process of setting up a web infrastructure to host my web application where security is the most important factor and I need to be able to allow only specific IP addresses to a ...
24
votes
1answer
3k views

Why does Google call Thunderbird “less secure”?

I've never had problems using Gmail with Thunderbird yet, but while trying to use a free software client for Google Talk/Chat/Hangout I've discovered that, according to Google's document on "less ...
6
votes
2answers
5k views

Connect iPad to windows 7 VPN

My iPad keeps spitting out the error: "A connection could not be established to the PPP server." I am trying to connect it to a VPN I set up with Windows 7 as an incoming connection. On the iPad, I ...
1
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1answer
22 views

Hidden network seems off and how can I increase my network security

For the last few week a hidden network keeps popping up in my network list. Every time this happens our internet drops is speed and our latency rises. This give me a feeling something is off so I have ...
0
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0answers
28 views

Creative solutions to work around kext signing issue in Yosemite? [on hold]

Unfortunately Apple has decided to create kext signing in Yosemite that creates issues for SSDs that require Trim support for optimal function and longevity. Whether this is vendor lock in or ...
1
vote
1answer
19 views

How secure are go lang based HTTP Servers? [on hold]

How secure should I consider the go lang net/http framework to be? I understand just how broad a question this is, but I'm wondering how robust I should consider the framework itself, NOT the ...
36
votes
3answers
12k views

Which of the Windows updates are really necessary?

I downloaded a lot of Windows updates in the automatic mode. Are they all necessary? Can I remove some of them? How do we know which ones are necessary?
6
votes
3answers
3k views

How can I edit banknote images in Photoshop CS?

While designing some personal stuff, I encountered troubles copy-pasting a banknote image into Photoshop CS2. I saved a Dollar bill from the web to my desktop, but trying to open it, even ...
0
votes
1answer
22 views

Sophos Remote Management & VuuPC - can my business partner access my private data?

I am not very security-savvy, but after getting loads of viruses and malware, one of my business partners offered to install their best antivirus software on my computer - it's called Sophos. A few ...
0
votes
0answers
27 views

Maximize seucurity in Windows XP [on hold]

I would like to downgrade Windows 7 (currently installed on my laptop) to Windows XP, which is no longer supported by Microsoft. I know this is something silly and I shouldn't been doing this, but I ...
2
votes
2answers
44 views

How do I configure my system to trust a CA for a specific subset of domains?

The company I work for has a number of internal web services accessible over HTTPS. These services use SSL/TLS certificates signed by an internal certificate authority which is only trusted by ...
2
votes
3answers
61 views

How come the machine name shows up in the email header?

All of the mails I send out arrive with the following header: Received: from My-iMac (12.12.12.12 [12.12.12.12]) by mx.mail.com How come my machine name My-iMac shows up? Is it because of my mail ...
0
votes
0answers
4 views

make Xvfb listen only on local ip

to use graphical software even on my debian based systems without graphic cards (or in addition to its main graphic) i use the virtual frame buffer x server Xvfb. I am starting it with a little bash ...
0
votes
2answers
2k 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 ...
0
votes
2answers
5k views

How to display the last user logged in Windows 7 PRO x64 logon

I want Windows to show the last user logged, so I only need to type my password, and I don't need to select my username. I thought it should be the default Windows behavior, but I've just installed a ...
0
votes
0answers
20 views

Unable to connect to FTP server (pure-ftpd) with SSL/TLS enabled

I have two machines inside my private network: one running Ubuntu 10.04 with pure-ftpd FTP server with SSL/TLS enabled, and another running Windows 7. I have configured my FTP server for SSL/TLS for ...
-1
votes
2answers
95 views

scary adware , all links in websites using google analytics goes to ad page

i had no problem until yesterday but today i noticed when i click any links it redirects me to http://www.ultrafiles.net/7cc02b3a/url/MY-LINK-HERE which looks like this: the picture above i tried ...
-3
votes
1answer
875 views

Google Сhrome new Secure Preferences, how mod preferences now?

In new Сhrome version 37.0.2062.120 m appeared new Secure Preferences file, how make modification preferences now? Secure Preferences file: { "extensions": { "settings": { } }, "protection": { ...
3
votes
2answers
3k views

How to unblock chm files - unblock button is missing

I downloaded a CHM file. When I double click it it prompts me to open / save / cancel. Whether I open or save a new copy, the 'new' version will prompt the same open / save / cancel popup ad ...
1
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0answers
28 views

Virtualization for security reasons [closed]

I am going to build a home server and I am planning it's software setup. I would like to expose one or two services to the outer world. Namely, OwnCloud, in order to have remote access to my files. ...
2
votes
1answer
3k views

Can't change or set password in Windows 7

I'm trying to set up a new user in a Win7Pro computer. The computer has HP ProtectTools enabled. I cannot set the password from within HP ProtectTools or the User Accounts control panel, when logged ...
0
votes
1answer
44 views

Quick Way To 'Hide' or Encrypt Several Terabytes Of Data? [closed]

I'm trying to adopt some best-practices (or at least less-bad-practices) with my external data storage. I'm looking for a way to quickly provide some minimal level of protection from prying eyes for ...
1
vote
2answers
119 views

Error installing shockwave player - can't close Norton popup window

I'm having the same problem as itmushroom. Adobe Shockwave Norton "Agree" button error Since I can't answer on his question because of my reputation, I'll try to clarify what he asked by ...
1
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0answers
8 views

Pairing of logitec Unifying devices uses a “secret algorithm”?

I'm considering buying a Logitec M570 wireless trackball. This device uses Logitec's "Unifying" wireless technology: a single tiny USB insert supports multiple logitec devices. This thread ...
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0answers
26 views

How do I prevent users from deleting a folder, while still giving them modify permissions to its contents… Doesn't work?

I have a backup of files on my computer and I am trying to make it so some of the folders cannot be deleted but their contents can. I was following the instructions on a post here, yet for some reason ...
2
votes
2answers
3k views

VMware workstation windows host shared folders issue

My laptop is a Linux mint powered host and a windows 8 guest via VMware Workstation. Yesterday, I get the bad and stupid idea to upgrade my windows 8 to windows 8.1 final release, using the Installer ...
4
votes
1answer
183 views

How to make computer (or user) trust signed software

I have an application, which I sign and timestamp using a code-signing certificate issued by thawte, with intermediate authority Thawte code signing CA - G2. The signature is OK (as it shows in file ...
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 ...
2
votes
0answers
23 views

Windows' Security warning on all files on local drives

Users usually can download portable software and use it from local drives withount any warning. (I mean small executables just as putty.exe or a portable application from PortableApps.com) However ...
0
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0answers
10 views

Is system call the only way that a user program can intentionally affect the state of a Linux kernel?

I think there are several ways that a user program can intentionally affect the state of a Linux kernel. By invoking a system call; By invoking mmap() and writing the memory that has been mapped to ...
12
votes
4answers
39k views

SSH: The authenticity of host <host> can't be established

What does this message mean? Is this a potential problem? Is the channel not secure? Or is this simply a default message that is always displayed when connecting to a new server? I am used to ...
8
votes
6answers
559 views

How do you protect your computer from Live CD's?

Linux has grown in popularity in the past few years. Many more people are using Live CD's now than they were say 3 years ago. And with this comes a new problem for network admins. How do you stop a ...
1
vote
1answer
5k views

Name resolution for the name…timed out after none of the configured DNS servers responded

I am getting this message in system event during my PC startup Name resolution for the name website.com timed out after none of the configured DNS servers responded. And another same message ...
4
votes
3answers
16k 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 ...
0
votes
0answers
13 views

Really weird behaviour of Apache POST call

Scenario: I have a server with MantisBT, plain HTTP, port 80. Queries are done to SOAP interface through HTTP POST calls. It's not working from my Windows XP PC using Eclipse Luna and Mylyn plugin: ...
1
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0answers
8 views

Nginx Modsecurity Apache Include Equivalent

I just switched from apache to nginx and so far I've been pretty happy. However, I've been having some issues with modsecurity. Back when I used apache I could use the following to add every rule I ...
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votes
0answers
39 views

John the Ripper: Crack ZipCrypto password

I made a password protected zip file with 7zip, using ZipCrypto algorithm. Set the password to 1234. I am using john-1.7.9-jumbo-7. I followed this manual: ...
0
votes
1answer
24 views

How to keep ~/.ssh folder secure on OS X

My question is about storing private and public rsa keys in ~/.ssh on OS X Yosemite. By default ssh-keygen stores pairs of keys in plain text format, which means anybody who have access to my OS X ...
0
votes
0answers
17 views

ssh-add: how to automatically insert private key passphrase?

I'm using ssh-add to add a private key in order to call lftp after that. It happens that my private key contains a passphrase and I need to automatically fill it when required. I'm able to overcome ...
2
votes
1answer
3k views

How do I figure out if my wireless network has WEP, WPA or WPA2 security via command prompt on Windows XP?

I understand how to check what security protocol my wireless network connection is currently using by going to the Wireless Network Connection window like in the following example but how does one ...
0
votes
1answer
21 views

What are these files that defy file permissions to be inaccessible?

Every once in a while in our environment the AV comes across a malicious file, usually in a users temporary internet files, that no matter what I try, I can't edit, move, copy, or in any way access ...
36
votes
12answers
5k 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 ...