Data-leakage is the uncontrolled, unauthorized transmission of classified information from a data centre or computer system to the outside. Such leakage can be accomplished by physical removal of data storage devices (diskettes, tapes, listings, printouts and photographs of screen copies or ...

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53
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How do you destroy an old hard drive?

How do you destroy an old hard drive? To be clear, unlike questions Secure hard drive disposal: How to erase confidential information and How can I reliably erase all information on a hard drive? I do ...
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8answers
9k views

How can I reliably erase all information on a hard drive?

As storage technologies change over time, using different encodings and remappings to deal with sector errors, the best way to permanently erase/wipe/shred data changes also. Methods for flash drives ...
35
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4answers
17k views

Why is writing zeros (or random data) over a hard drive multiple times better than just doing it once?

Lots of different programs, such as Darik's Boot and Nuke, let you write over a hard drive multiple times under the guise of it being more secure than just doing it once. Why?
33
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1answer
4k views

Does WinRAR leave traces of temporarily extracted files?

If I have an encrypted RAR file which will only open using a password, and I opened a file directly from within WinRAR by double clicking the file inside WinRAR, I assume that WinRAR will create a ...
31
votes
9answers
14k views

Are powerline ethernet adapters inherently secure?

I have 2 Zyxel PLA407 powerline adapters. Router is downstairs connected to one adapter, other adapter is upstairs about 30 feet away connected to a desktop. I have a house, not an apartment or ...
27
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5answers
4k views

Could mint.com be more secure, and if so, how?

After reading a bit about mint.com on the money stack exchange, I wanted to give it a try. But frankly, it scares me a little bit. The site has a bunch of links explaining how they're so secure. I ...
18
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4answers
3k views

What can an attacker do if he knew my database credentials?

If an attacker knows my database username and password, what can he possibly do if he doesn't have access to my server? Let's say my database is using Microsoft SQL Server. Is there a way he can use ...
16
votes
4answers
1k views

What is the easiest way to search massive, leaked databases for persons and personal information?

This may seem like a rather nefarious question, however, my motivations are quite the opposite-- I want to know how at risk I might be! A while ago a very MASSIVE database was leaked that contained ...
16
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6answers
3k views

Is it a good practice to show 403 unauthorized access error to user?

Whenever we see a 403 forbidden access error page we think we have got to a place where some secret or private data is present. Now at this point bad guys know that this might be of interest and start ...
16
votes
8answers
796 views

Should the requirement of admin privileges be extended?

Seeing this comic from xkcd.com made me thinking: Is extending the requirement of admin privileges to things such as connecting to the internet, running the web browser, reading browser and other ...
16
votes
2answers
825 views

Secure wiping of EEPROM and flash memory

Older magnetic storage exhibited some data remanence, so a recommendation emerged to wipe data by overwriting it multiple times with varying patterns — the “Gutmann wipe”. More recent hard disk ...
15
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7answers
2k views

Why don't banks get hacked?

From reading a lot of info on this website I came to the conclusion that if someone with enough skill really badly wants to gain access somewhere, then there is absolutely nothing stopping them from ...
15
votes
5answers
5k views

Preventing information disclosure from browser back button/history?

I have sensitive data that will be hosted on a website, and I would like to prevent the data from being exposed in this scenario: The primary user logs off the application, but does not close the ...
15
votes
3answers
2k views

How should one properly dispose of a printer or fax which is used for sensitive documents?

If you need to dispose of printers or fax machines that have handled sensitive documents, how should they be handled? Should you permit them to be donated or sold for reuse outside the organization? ...
14
votes
2answers
3k views

Hiding user account names from unauthenticated RDP sessions

This is for a Windows 7 Ultimate system, which is not a member of a domain. When I log into the system locally, I am required to either manually enter my user ID or authenticate with biometrics. The ...
14
votes
2answers
2k views

The Creation of Secure Software Development Environments

[Edit] I did complete an analysis and framework of concepts that were included into my thesis for extensions to existing frameworks. All of the information in this thread was useful. The direct ...
13
votes
5answers
480 views

What is the risk of giving USB drives as promotional items by a healthcare provider

There have been a couple of instances where malware infected USB drives have been given away unknowingly as promotional items at conferences, e.g., IBM in 2010. Besides this, if a healthcare company ...
12
votes
6answers
1k views

Best method of retiring hard drives

What are some typical ways you guys retire hard drives? We have a hard drive that won't mount anymore (makes clicking sounds when it tries to mount). The data on it isn't necessarily sensitive (no ...
12
votes
5answers
1k views

Is clipboard secure?

Can a browser get the data on my clipboard? Data could be for example my temporary password? Any browser or operating system that allows this?
11
votes
4answers
2k views

Is it feasible to encrypt customers personal data? (name, address etc…)

Seeing the Sony Personal data kerfuffle unfold has gotten me thinking about the encryption and securing of personal data - obviously credit cards can (and should) be encrypted, making data breaches of ...
11
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2answers
205 views

What sensitive information can be leaked in a Vim's swap file?

Often it occurs that when bulk uploading files somewhere, the author forgets that some of the files are being open by Vim and uploads their swap files as well. Can this leak some sensitive ...
10
votes
4answers
795 views

Source code security

We have about 20 developers working in a heterogeneous environment, mostly using company laptops or desktops. We run Windows 7 on desktops/laptops and a mixture of Linux distros (Ubuntu/CentOS). ...
9
votes
5answers
2k views

Swap file may contain sensitive data

Is it possible that the swap file will contain chunks of data by a file you have accessed, and could this be detected during a forensics analysis? How could you prevent this situation ? Is using ...
9
votes
3answers
1k views

localStorage for apps over https. What expectations are there?

I run an online gradebook. To keep student data private, I transfer all data over https. Now, I'd like to use localStorage to avoid redundant calculations and server requests. However, according to ...
8
votes
3answers
609 views

How are large tech sites such as LivingSocial, Zappos, LinkedIn and Evernote hacked?

How are large tech sites such as LivingSocial, Zappos, LinkedIn and Evernote hacked? (i.e. how is their entire dataset of users obtained?) LivingSocial - 50 Million Users Exposed Zappos - 24 Million ...
8
votes
3answers
732 views

What factors do you use to choose data loss prevention techniques to use, if any?

Had an excellent discussion this evening with ISACA Scotland around data loss prevention. There are technical tools out there from such luminaries as Checkpoint, MacAfee, Cisco, Symantec etc, but all ...
8
votes
5answers
410 views

How would you detect whether customer data has been leaked?

I'm a very security conscious (bordering paranoia) freelance web developer and I place a lot of emphasis on security with my clients, alas I've found this doesn't seem to be the case for the average ...
8
votes
1answer
417 views

How can I secure my log files?

I have a cool tool that displays my syslog and kernellog on my mac's desktop. This has me concerned about what is written in them - I'm staring to feel like they are creating a hole in my privacy. I ...
8
votes
1answer
339 views

What is a practical example of an action that violates the non-interference model?

I'm studying the non-interference model as part of CISSP prep and am having trouble thinking of a practical example where a violation would be involved (and the consequences of those violations). I ...
8
votes
2answers
1k views

Is Data Remanence a Myth? [duplicate]

Possible Duplicate: Why is writing zeros (or random data) over a hard drive multiple times better than just doing it once? Multiple overwrites have often been discussed as a secure way of ...
7
votes
3answers
35 views

Active measures against lost or stolen PDAs in healthcare?

Many physicians, nurses, and technical staff like to carry PDAs to be kept abreast of patient conditions. Various companies want caretakers to view ECGs on their iPads. Due to the incredibly private ...
7
votes
1answer
338 views

Social Engineering and Police Officers

The Story: Yesterday at 12pm a neighbor of mine was pulling into his driveway, and saw that his van's back-window was shattered. Well, this neighbor and I have had some trouble with each other in the ...
7
votes
1answer
1k views

Encrypting sensitive data in software and storing/decrypting it on a server

I have searched IT Security and Google for something similar to this, but wasn't able to find anything remotely related to what I'm doing. I'm developing software which has 2 parts - a C# program run ...
7
votes
2answers
2k views

How bad is the leaking of Internal IP addresses through external DNS

If an external DNS server is leaking internal IP addresses are there any significant security threats associated with this information leakage? Apart from most the obvious - gaining an understanding ...
6
votes
5answers
423 views

Effect of Source Code Leakage of a security suite on security

I am interested to know what threats does it pose, if the source code of a security suite is leaked. It came to my mind after reading the following URLs: ...
6
votes
3answers
223 views

Can you recover original data from a screenshot that has been 'blacked out'?

Is there a threat from screenshots with blacked out info? That is can someone take out that after market addition so to speak? For instance I take a screen shot (using MS snipper) Then I ...
6
votes
3answers
1k views

How to destroy old credit card?

What is the best (in terms of security) way to destroy old (but still working) credit card?
6
votes
3answers
4k views

Recover the prior contents of RAM from a turned-off PC?

I've heard that if your PC is turned off, then an attacker can recover the RAM from the last session. I find this hard to believe. How could it be done?
6
votes
3answers
846 views

Have hardware trojans been seen in the wild?

Military and intelligence organizations have spent a lot of resources guarding against the possibility of hardware trojans, unauthorized modifications to hardware circuits that leak information or ...
6
votes
2answers
277 views

Can a web application administrator access the database of that application?

We have a web application linked to a database. The database is secured but contains unmasked confidential numbers. Can a normal administrator who can access the application, access those numbers in ...
6
votes
2answers
437 views

With Google's new Privacy Policies going into effect soon, how can I better protect myself using their services?

From what I can tell, the gist of the new Privacy Policy from Google is that they're making a blanket policy to allow using your data between all their services, however they see fit. So now one ...
5
votes
2answers
262 views

What to do in response to a source code and/or database leak by a third party hosting provider?

My PHP sourcecode and database (PHPMyAdmin Dump) has been leaked publicly and I believe that the web host I have used for this service are responsible for the leak. On first appearances, the web host ...
5
votes
4answers
450 views

What do you do to protect data on a Macbook in the event of theft/loss of the device?

What setup do you recommend to protect data on a MacBook in the event of theft/loss of the device? I'm specifically interested in Macs here, rather than laptops generally, and in concrete ...
5
votes
2answers
499 views

Android side channels: what can one app observe about other apps?

What information can a malicious Android app observe about the behavior of other apps running on the same phone? In more detail, suppose app M is malicious and is running in the background. Suppose ...
5
votes
2answers
661 views

HTTPS Sensitive Information and Caching

I have a website where I need to share a sensitive key with the user. Of course, I'm using HTTPS on the page. The key is put into the HTML server-side in ASP.NET. My concern is, if the user's computer ...
5
votes
3answers
118 views

Fixing security issues without boss/client's authorisation

I have a fair number of security concerns with a client's operation and it made me think about all the security concerns I've observed and noticed throughout the years with different clients/jobs. ...
5
votes
2answers
237 views

How to destroy VOIP phone in a proper way?

Are there any standards which consider safe destroying of VOIP phones? I would like to prevent eventual data leakage after devices which have left the company.
5
votes
1answer
233 views

What particular devices and processes are available to destroy hard drives, per DoD 5220.22-M?

DoD 5220.22-M specifies the following methods for destruction of hard drives with classified data: Disintegrate Incinerate Pulverize Shred Melt I've seen shredders of the type that might be used ...
5
votes
1answer
289 views

Wordpress Brute Force Attacker knows real admin Username -

I've noticed a brute force attempt on several different Wordpress installs that know the right admin user name for those respective sites... It seems very strange that the hacker would be able to ...
5
votes
2answers
480 views

What SSD maker has implemented Secure Erase to spec?

I have a Kingston hyperx drive circa 2012. I kicked off a secure erase on it. I then remounted the drive and was horrified (well, not really more like bemused) to see my whole parts of my old file ...