The use of physical measures (such as locks and tamper-proofing) or policies (such as Clean Desk) in order to protect sensitive information from unauthorized access.

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0
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2answers
204 views

Is PIN affective security for credit cards considering it's not always needed?

This question asked about how having a PIN is safer than signing the receipt when doing a credit card transaction (personally the question makes no sense to me as it's just a scientific fact that a ...
1
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1answer
105 views

Everykey (Bluetooth master key) - is it really secure? [closed]

Obligatory disclosure I have no relation to the Everykey company and do not mean to promote them in any way. I came across the product Everykey that claims to be "your only key" by allowing you to ...
1
vote
1answer
31 views

Difference between local and physical attack vector in CVSS version 3?

In CVSS version 3, there are four different attack vectors. I am not able to differentiate between local and physical. Say, if I want to report "absence of logout button" I will use physical as ...
4
votes
1answer
78 views

What medium for storing full-disk encryption keys is easy-to-use as well as easy-to-destroy?

If I were to frequently work on sensitive data on a LUKS partition and wanted to be able to quickly destroy the keys to it, I figure it would make sense to— encrypt that partition with a key file, ...
81
votes
9answers
12k views

Secure USB cable for charging in untrusted environments

On a long haul flight, I imagine that charging a phone (in flight mode) with the inbuilt USB port on the head rest would be a security risk. Could I mitigate that risk by taking a regular USB cable ...
0
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0answers
14 views

Can confidential data be gotten from a “hibernation file”? [duplicate]

When a computer hibernates, AFAIK a copy of the RAM is saved into a file on disk. Is this a potential security flaw, knowing someone can take the disk and read the RAM freely?
5
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2answers
147 views

Can I repair a cut-through credit card?

On many cards there's the instruction to, if found, cut it in two pieces and mail them to some address. I'm wondering a bit about the security of this and if I could recover some data. It's not ...
-3
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1answer
112 views

How can I check if someone tampered with the CCTV footage or system?

Recently I was staying in a hotel and I had some very important belongings stolen there in the hotel which is definite. The problem is that no one entered my room after I left the room (2 times for ...
75
votes
8answers
18k views

How is 'Removing RAM' a security risk?

Today I was watching a video on 'Ethical Hacking' where, while discussing hardware attacks, the narrator said: Removing RAM or components from a desktop or a laptop Here's a screenshot: I ...
6
votes
6answers
563 views

Crash a computer using waves or similar techniques?

I am trying to prevent a potential attack, by first learning how to perform it. Pretend there is a cheap £20 - £50 computer, which an attacker with physical access to wishes to crash. This computer ...
0
votes
1answer
88 views

Windows security & data protection

I work for a hotel. The hotel stores a MySQL database online. This database only contains a Reference ID, number of nights and so on, but no private data. No names, no personal information on guests. ...
36
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7answers
7k views

Is it possible to improve brute-force guessing of a password with a picture of the keyboard used to enter it?

Is it a bad idea to post a photo of your keyboard to social media? Can I look at a photo of a keyboard and determine the password of an account? Assuming a certain (set of) password(s) is the most ...
2
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4answers
105 views

Are there any quick-erase devices with a small memory available for storing key information?

I would like to set up my computer's full disk encryption to unlock with a key file (preferably one that uses the SD card interface, but I'm not particularly picky) because it's annoying to enter in ...
5
votes
3answers
208 views

Do you have to ban cellphones and paper to be PCI compliant?

Today I heard of a call centre that you are not allowed to bring cellphones into or take paper out of. This is allegedly to be PCI complaint. Is this true? What is the reasoning? This seems like ...
23
votes
5answers
4k views

Does multiple numbers per button have an effect on security?

I recently came across an electronic deadbolt like this: The keys have multiple numbers per button, 1|2, 3|4, 5|6, 7|8, 9|0 Is there any way that this increases the security of the electronic lock? ...
23
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4answers
3k views

What are the alternatives to door passcodes?

Passwords have been a problem since the dawn of computing. They tend to be either so complex that no one can remember them, or so obvious that anyone could guess them. ... Some users ...
3
votes
0answers
36 views

What is the current state of RFID / NFC security?

I'm attempting to do some RFID and NFC cloning and replaying research, as I'm hoping to be able to demo physical security as an attack vector to a few of out clients and prospects. The downside (...
4
votes
1answer
76 views

Wiping magnetic stripe on card with magnet?

I asked a question a while back on using magnets (for example powerful Neodymium ones) to wipe a HDD, and got shown a good article proving it is not possible to wipe data. Pretend I am about to ...
1
vote
0answers
25 views

Can a JTAG device be attached to a running system?

JTAG, or Joint Test Action Group, is a standard for debugging. Many modern motherboards, both on mobile devices and on desktops and workstations have JTAG ports. They allow a CPU to be controlled like ...
6
votes
2answers
252 views

Can motion sensors be disabled by lasers without triggering the alarm?

I remember when I was a kid and was waiting for someone in a long hall, there was a motion sensor and security panel by the door. To kill time, I would go away from the door, then try to move so ...
0
votes
1answer
28 views

Why don't terminal IDs prevent unauthorized entery?

I'm studying for CISSP and had gotten this question wrong. I also found it and the correct answer online, but still don't understand the reasoning. Source Which of the following controls is ...
9
votes
5answers
355 views

Mitigating forensic memory acquisition when an attacker has physical access to a workstation

My question regards whether or not the mitigations I use are appropriate for my threat model. Please don't jump to conclusions and say "you need to use locks" or "you can't leave your computer ...
0
votes
2answers
174 views

attacks via physical access to USB (dma…?)

I wonder if USB can be exploited by someone with physical access to a reasonably secured computer. For example a kiosk, or laptop attached to a desk. Obviously, boot sequence should be secure (disk ...
-4
votes
3answers
111 views

Is there a way to secure a Linux machine in a way that no one else (but me) can access its contents? [closed]

And I mean, even if someone tries rooting with a Live CD, even if one takes the HDD away and plug it in somewhere else, etc... I want to be able to give a client a machine with a service running, but ...
1
vote
1answer
47 views

Location/proximity based decryption using separate machine

I read a long thread where the whole issue was revolving around deriving decryption keys from GPS location. This has huge issues, as being present at a location is not needed to know the location. ...
-9
votes
1answer
260 views

How to protect my laptop screen from being hacked? [closed]

My laptop screen has been hacked, and I think that it is by Van Eck phreaking method. The attackers can see my screen, they are seeing my screen right now. I never even talk to them and these ...
3
votes
1answer
59 views

Information Security on a lost android phone

Recently, my android mobile phone was lost/stolen. I had logged into several applications such as Facebook, Paytm, etc. Thus, there are chances that my personal/ transaction details might be leaked. ...
6
votes
1answer
118 views

What is collusion and how does seperation of duties prevent it, or fail to prevent it?

I'm studying for CISSP and came across the term "collusion". I understand it means when people work together to steal something, but don't quite get it. For example, if two gunmen rob a bank would ...
3
votes
5answers
333 views

How should I store a physical written copy of my password? [duplicate]

I can employ all the fancy encryption and the randomest of passwords to my hard drive, but it won't do me any good if I don't remember how to log in. It seems sensible to write down my password, then....
0
votes
1answer
132 views

Securing a public computer meant for banking

I sometimes visit my bank personally to handle certain formalities. Inside there is a booth containing a computer and all equipment necessary to log in to the online banking service. The computer is ...
7
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4answers
308 views

Must a system be insecure against physical access? If so, why?

Inspired by: Why don't OSes protect against untrusted USB keyboards? Related: What can a hacker do when he has physical access to a system? (I address the points of its main answers below.) There ...
104
votes
8answers
19k views

My school wants to keep the details of our door authentication system a secret. Is that a good idea?

So, I am designing a door authentication system (can't really go into more detail) for our school, so that only authenticated persons can go through a certain internal door. They hold that its inner ...
80
votes
14answers
11k views

How can I protect myself from false accusations when our company practices password escrow?

During an internship for a small company, my boss created an account for me, so I generated a password and I used it. The next day, my boss told me to write down the password of my account on a piece ...
4
votes
1answer
120 views

Motion sensor door locks

I have seen several offices with electric locks for entry that have a sensor for exit. I assume it's some kind of motion or object detection sensor. This is odd because in many cases, there's a ...
3
votes
1answer
59 views

Loss of physical locks/password to safes

Safes can keep important information like part of a dual control password, smartcards and pendrives, and so on. What would be the best practices to prevent loss or damage to a physical locks to a ...
2
votes
2answers
95 views

Are passport stamps a reliable security feature? [closed]

Most countries in the world still place passport stamps on arrival/departure into the country. Theoretically it is then possibly to calculate the length of a person's stay in a specific country. Is ...
1
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0answers
41 views

What else can I do to protect my accounts? [closed]

I am trying to make sure all my accounts are secure from unauthorised access and have turned on all security measures that I can find to make sure my stuff is protected. Here is what I have in place: ...
-3
votes
2answers
91 views

Defense in depth

How is defense in depth strategy different from network security policy? What is the need to name it a "Defense In Depth", although you may simply name it "Network security policy"? Secondly if DID ...
3
votes
2answers
93 views

Shutdown if case opened

Assume the user has a full disk encrypted HDD in which their OS and files reside. They also have made attaching USB or any other device without first allowing it cause an automatic shutdown which ...
2
votes
0answers
28 views

Reasonable means of security in commercial dealings [closed]

I am writing a paper from a legal standpoint and I'm suggesting legislation for a new duty of care for private companies in the safeguarding of customer's personal information. This will not apply to ...
54
votes
9answers
7k views

Why would security cover things like natural disasters?

I'm taking a course which is designed with the CISSP certification in mind. Though the class is categorized as software engineering, we talked a lot about physical security and, in particular, floods, ...
2
votes
2answers
666 views

What is the security of random code for authenticating products?

I have seen a startup (Verify Kero) that is building a product for verifying consumer goods. It places a 16 digit secret code under scratch-able coating. Consumer finds the code behind coating and ...
19
votes
2answers
4k views

Why did the Papal conclave use a Faraday cage in 2013 when selecting the new pope?

The Wikipedia article about Faraday cages has this anecdote: A Faraday cage was used in 2013 by the Vatican to shield the Sistine Chapel from electronic eavesdropping during the secret papal ...
42
votes
8answers
5k views

Is physical security less important with disks on a server being encrypted?

If you could get physical access to a server, you could change the root/admin password even if you did not know the current password. However with encrypted disks, I don't think this is possible (...
36
votes
3answers
2k views

Evaluating the security of home security cameras

My parents have a vacation home out in the country and are looking to setup a home surveillance system for remote viewing. I've heard that there can be serious vulnerabilities in these products. What ...
1
vote
1answer
149 views

SSH Key vs Complex Password with Fail2Ban & Two Factor Authentication

Normally you hear that using an SSH Key is far more secure than using a regular password. However I've been wondering if this statement is really true. Let's say we have the following variables for ...
5
votes
0answers
299 views

Ethical Hacking Certification (CEH v9) From A Web Developer's Perspective [closed]

I just finished a week of training for the CEH v9 certification. I have two questions: What are some strategies I can take for studying for the CEH v9 certification coming at the test as a web ...
7
votes
3answers
122 views

Is it possible to determine if the BIOS has been modified between two points in time?

Is it possible to determine if the BIOS of a computer has been modified between two points in time from that computer while it's running ? Effectively I'd like to be able to gather the equivalent of ...
0
votes
1answer
32 views

Sophos Safeguard detecting content of zip files being uploaded

Is it possible to use Sophos safeguard to detect when computers in the network upload certain files online when they are compressed in a zip file? (or 7z or similar). I've seen it is possible with ...
37
votes
5answers
4k views

Risk of tampering when hardware shipment is delayed

I am currently receiving an order of computer parts in the mail including an SSD. Tracking showed that the package arrived in my town on day X, and was originally scheduled for delivery on day X as ...