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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2
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1answer
8 views

Is flushing of all caches on any context switch between mutually-distrusting processes the only way to prevent cache timing attacks?

This article demonstrates a devastating Javascript-based cache timing attack that allows for cross-VM tracking of mouse movements and other activities by web pages. Is the only way to prevent ...
173
votes
21answers
23k views

How can I explain to non-techie friends that “cryptography is good”?

After that case in which Brazilian government arrested a Facebook VP due to end-to-end encryption and no server storage of messages on WhatsApp to prove connection with a drug case, it's become pretty ...
-1
votes
2answers
69 views

If a hacker were to obtain a shipping tracking number what could be compromised?

Lets assume you just bought something and it is getting shipped via a major package shipping agency (such as FedEx or UPS etc.). You are given a tracking number which you can use to view where the ...
20
votes
5answers
11k 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?
3
votes
0answers
25 views

How to mitigate risk of X11 buffer ghosting on window resize and X server shutdown

The Buffer "Ghosting" Phenomenon It is possible to observe contents of (old and currently used) graphics buffers on a monitor under certain circumstances, posing an information disclosure risk, when ...
1
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0answers
50 views

Restricting VMware View Copy/Paste Functionality

Does anybody know if it's possible to restrict VMware View copy/paste functionality depending on the source of the client? It seems VDIs can have GPOs set to configure copy/paste functionality, but ...
2
votes
0answers
108 views

Security Questions I should be asking my developers [closed]

I am looking for a comprehensive list of security related questions I should be asking my developers. I have done some research on the net and have yet to find a great list of questions I should be ...
1
vote
2answers
92 views

Explaining information leak to Lead dev

Our lead dev tells me that this information leak from our website is "no vulnerability. Just an ugly error UI." It looks to me that the leaked information could be used to aid an attack. Does it ...
5
votes
2answers
108 views

What are the risks of sending sensitive documents that are on physical media and password protected via postal carrier using registered mail?

Background The company I work for is extremely risk averse when it comes to adopting the use of cloud services for improving business flows. We currently use a very famous search company's business ...
9
votes
1answer
566 views

I found emails and passwords on github, what should I do?

Content in question: I found a file in a public repository on Github that contains a few 100 emails, some of them with a password (as bcrypt). Verification: As I recognize several of the addresses, ...
0
votes
1answer
36 views

Unsecure FTP with Encrypted file and Wireshark leakage

Hi i was wandering if it is possible to have a password leaked to an encrypted file on an anon ftp server with r-x-w permissions. So for example i have a file encrypted using gpg and when opened on ...
1
vote
1answer
22 views

Why mobile applications share device characteristics with third parties?

It is known that mobile applications can share with third parties many different types of data from information about the device to search terms used in the application. I understand that search ...
0
votes
1answer
28 views

Does KDE System Tray Extra Items “Clipboard” have the same security threats as the system clipboard?

Does the clipboard under kUbuntu's KDE System Tray > Extra Items "Clipboard" have the same security threats as the system clipboard? The following articles point out the insecure nature of the ...
1
vote
0answers
37 views

What should I do when I find out some company user database I am listed in was leaked?

Today the antispam tool in the company I work for blocked several emails. It has been months since last time, so I took the time to analyze the quarantined messages. Since I almost never give my ...
2
votes
3answers
73 views

Is it safe to include memory addresses in a program’s output?

I’m writing a program. The input is a complex data structure in memory. The output is an HTML report that contains: (1) a representation of the structure; (2) textual annotations that refer to objects ...
9
votes
6answers
16k views

How do I securely erase USB flash drives?

I would like to know if there is a way to securely erase USB flash drives without a chance to recover data from it once it has been erased. I know, that programms like DBAN can be used to securely ...
0
votes
0answers
81 views

Should I blur the cached snapshot of my app?

I recently ran a security scan on one of my iOS apps that suggested I modify my apps display as it enters the background so that the screenshot stored in the cache does not expose any sensitive data. ...
2
votes
5answers
3k views

If a hacker were to compromise a GMail database

Assuming the systems that store the Gmail database is compromised what is preventing them from reading everyone's emails by looking at the data in the database? I assume nothing, and in order for ...
4
votes
5answers
3k views

Is it ok to cut some digits from the front-face of a credit/debit card?

I'm a European expat living in Asia. I usually hide my credit card at my apartment. However, I'm a bit scared about losing it when I carry it (wallet robbed or lost). That's why I already scrubbed ...
3
votes
0answers
57 views

Is an application backend expected to potentially log sensitive customer data when in debug mode?

As I am working on a website that asks customers to enter data such as their name, address, phone number, obviously customer data that needs to be protected. I do my best to not log such data ...
0
votes
1answer
92 views

Does non-persistent data ever need to be encrypted?

Does non-persistent data ever need to be encrypted? If I had a project with confidential data stored in non-persistent class variables should I be doing anything to protect this data? I am developing ...
15
votes
3answers
1k views

Is it safe to post dxdiag on the internet?

Is there any information that might be useful to damage me on the dxdiag.txt file generated by windows 7? A technical support forum from a big company (I guess they know what they're doing) asks me ...
4
votes
0answers
38 views

Major UK company seems to be handling customer & card data recklessly [duplicate]

A company I used to work for is passing customer's personal details as well as card data (number, expiration date, name, CVV2 and the contents of the magstripe thanks to a reader) through Windows XP ...
1
vote
2answers
390 views

How do private photos get stolen?

I'm not referring to any of the below: A spiteful partner sharing private photos of the other after editing themselves out. Someone stealing photos from a professional photographer/artist without ...
3
votes
2answers
853 views

How can I prevent private data from being disclosed outside of my organization?

I'm not looking to secure my internal network. Our company keeps sensitive customer information. How can I prevent this information from spreading outside of the company? How do big companies ...
10
votes
3answers
2k 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 ...
5
votes
2answers
482 views

Preventing information from leaving corporate network

How do you prevent confidential information from leaving the network.? Nowadays online storage facilities are in abundance. e.g. Google Drive, One Drive ...etc. Any employee can just upload sensitive ...
4
votes
1answer
157 views

Someone called my cell phone offering services about something I have been looking for in the web

I recently started gathering information about poker and poker online. I had no idea about it and I have spent about a week surfing the web (mainly using Google) and consulting different web pages ...
-2
votes
1answer
103 views

How can startup companies protect their code from any intentional leakage? [duplicate]

So, how can new companies that have just started protect their source code from leaking by their employees? If it is a new company that means that the source code of the product is not so big and ...
0
votes
1answer
89 views

How can I ensure that only the message I sent, and nothing else reaches the receiver?

How do I make sure that the open channel I use to send a message to a specific receiver, is not used by a third party to send unwanted files and compromise the receivers system? Is there a method by ...
0
votes
1answer
189 views

Is there a risk that file shredders and free space wipers steal our confidential data?

I was wondering how secure are the file shredding software and free space wipers? Lets say we are using PC Windows, and software CCleaner (from piriform) or File Shredder (found here) to securely ...
14
votes
4answers
1k views

How to securely, physically destroy a hard drive at home?

Hard drive in question has sensitive unencrypted data but has failed and no longer responds so can't be wiped. I'd like to physically destroy the said hard drive (3-1/2" desktop, spinning platter ...
1
vote
3answers
89 views

Block mobile tethering on android phones from Windows (DLP)

In our small organisation I have tried my best at implementing DLP by : 1. Making sure users access all files from the server 2.Local disks are denied access(forced to work only on network drives) ...
-1
votes
1answer
31 views

rpm package info leak?

On Linux, rpm -qi <package-name> command would display the package info, which would contain information of build machine - Build Host :<host-name> Does this pose any security risk? Is ...
8
votes
3answers
119 views

How can you prevent email addresses from being harvested from a registration form?

When you go to a website's login form and enter the wrong credentials, the website can give you one of three error messages: Your email is wrong Your password is wrong Your email or password is ...
6
votes
3answers
1k views

Does reboot clear RAM?

How can I ensure that the whole RAM was zeroed-out? Does a reboot (Power On Self Test) clear whole memory before system is booted? Or does a Linux kernel zero memory before proceeding? I am familiar ...
2
votes
0answers
62 views

How often are codebases compromised? [closed]

I'm currently trying to research which get compromised more often; databases or codebases? My guess would be that databases are the obvious answer and most of the time easier to compromise, because of ...
1
vote
0answers
28 views

Are exposed database names on shared server a security hole?

I was working for a client this week, and they use PostgreSQL database for web applications. They have their database on a shared server. When I connected to the database host with pgAdmin, I was ...
3
votes
2answers
551 views

Tor exit node can know my IP address?

I have read some articles about how Tor works. I know about layer by layer decryption, but there is something that I cannot understand: If the exit node is the one that does the last decryption and ...
3
votes
4answers
96 views

Is reading from prod to dev a security concern? [closed]

We have two environments, both of which have access to the same data sources. However, prod is locked down (reasonably so) while dev can be written/read by developers. Data flows from the source ...
9
votes
2answers
196 views

Why are Android permissions granted in groups?

The Android documentation on Permission Groups states that If an app requests a dangerous permission listed in its manifest, and the app already has another dangerous permission in the same ...
1
vote
2answers
89 views

Understanding the behaviour of existing eavesdropping techniques

I am studying the behaviour of existing eavesdropping techniques (part of my research). I have a question through the following scenario: Suppose Bob lives in New York and wants to listen (i.e. ...
6
votes
4answers
557 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 ...
29
votes
12answers
4k views

Is there a secure way to transfer data outside the Internet?

Since, recently, it has been proven that transferring data through the usb port is fundamentally flawed, I'm wondering if there are 100% secure ways to transfer data without using the Internet. ...
48
votes
8answers
29k 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 ...
5
votes
2answers
158 views

Should Android apps for communication encryption and security require permissions like identity, device ID, contacts, etc.?

There is a Android application Threema for communication encryption and that says it does not collect user data, but it requires the following permissions: identity, contacts and device ID. Can ...
1
vote
1answer
103 views

Copy-and-pasting plaintext data from encrypted container

Suppose we have sensitive information stored in plaintext within a dm-crypt/VeraCrypt encrypted file and this information is copy-and-pasted by a user into a web browser after decrypting (this could ...
3
votes
0answers
360 views

SQL security - ACID transactions and locking to prevent financial fraud (timing attack?) [closed]

I am trying to prevent something similar to this from happening: http://hackingdistributed.com/2014/04/06/another-one-bites-the-dust-flexcoin/ Basically the financial exchange was using non-ACID ...
58
votes
4answers
35k 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?
6
votes
1answer
178 views

How far a VPN service is legal? Does it makes my data vunerable for hackers?

Today, in Brazil, the government suspended by judicial requirement the WhatsApp application for 48 hours. It is a messaging app that works only via Internet connection (3G, 4G, WiFi...) and not by ...