Questions tagged [physical]

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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Thoughts on Vaccine Security

Are there any recommendations for the physical security of COVID-19 vaccine? I recently watched this video https://www.youtube.com/watch?v=uoqMA9vAOrQ on covid-19 vaccine distribution. At the 0:40 ...
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Is there a better method that this for storing a physical password? [duplicate]

This may be a little unnecessary, but taking into consideration: There are many ways to hack a computer There are many ways to hack a network There is always a possibility of an undetected malware on ...
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Can the glue of glitter-hot-glue sticks be used to provide evidence of electronics-hardware tampering?

I've been researching low-cost, yet strong, tamper-evident mechanisms, and purchased some low-cost glitter-hot-glue sticks as part of this research. The Amazon page advertising the sticks, seems to ...
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How to simulate wireless sensor network attacks in packet tracer

I need to simulate Wireless Sensor Network attacks in packet tracer, to check the effectiveness of security protocols. Can anyone tell me how can I simulate this attack in Packet Tracer?
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Cryptocurrency recovery passphrases in the cloud?

Currently, my recovery passphrases are just handwritten on a bit of paper. I know myself and don't feel very confident that I'll still know where that paper is when I need it in however many years. So ...
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Low-Power Keyless Entry

When I get within a meter of my car with the key in my pocket, the door unlocks automatically. A standard 200mAh 3V coin cell powers the key for about two years. To think about this easily, let me ...
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Election security is considered one of the most difficult problems in computer security [closed]

Not just electronic voting, but in election security general. I think it part is because there are many components to it, and it has many components that could be compromised. What are some of the top ...
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116 views

Why do people, even programmers and geeks, seem to almost feel the urge to “give hackers a fair chance” at stealing their data? [closed]

I once heard that the author of the early NES emulator "Nesticle", clearly a very intelligent person, baffingly used some kind of exploitable "Samba" or "SMB" server ...
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How to share passwords *only* after death?

I am looking for a modern, password manager-based way to share my passwords with certain parties (partner, executor of my will) within a week or so of my death, but no sooner. The scenario I wish to ...
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70 views

Is there any write-once USB stick/pendrive? [closed]

Is there any Write-once USB stick/Pendrive? I need to submit some files to Authorities and I don't want them to modify on whatsoever. Any suggestion?
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Emergency method to erase all data off a machine within seconds

Imagine you are carrying highly sensitive information with you, maybe on a mission in a war zone. You get in an ambush and quickly need to erase all the files before they fall in the wrong hands. This ...
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Security standard that requires network cables to be visible for inspection

I recently worked for a customer that showed me that all their network cables are visible. Indeed, cables were never drawn inside walls, conduits or trunks. Instead, they were "hung" on poles close to ...
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Remote monitoring of key strokes — is an RF retro reflector required?

Is it possible to remotely monitor key strokes on a laptop or is an RF retro reflector required? If so, where would be the most likely location such a device would be placed?
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Why did I never see those “spy signal jammers” for sale?

I recently watched a 1980s computer television programme about the problems of spying. Basically, they showed how anyone could buy relatively cheap and common hardware and then be able to sit outside ...
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Can the photos/videos I deleted a year ago can still be on my iPhone or on the Internet?

I have been getting paranoid lately and decided to ask for your insight on this issue. A year ago, I took photos of some personal information (cc, passport, etc), and deleted them a month later, along ...
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Document security - how to find who's leaked a confidential document?

I am legally obliged to distribute a document (probably by email, probably saved as MS word, or a PDF) to several hundred recipients. The recipients are legally obliged to keep it confidential. ...
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How can any intelligent person believe that PGP, HTTPS or anything else we have today is secure, given history and logic? [closed]

It truly feels like we are living in an "afterworld", long past the era when smart, intelligent, real men and women worked on things that really did matter. I'm talking about Enigma, Lorenz, Collossus,...
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“Digital” signatures on real life objects

Although this question may be out of scope, I'm wondering if there's a reliable way to apply a "digital signature" to real life objects in order to prove your ownership of them to a degree. As an ...
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Can I safely sell a used keyboard without risk of new owner recovering previous inputs?

As far as of my knowledge goes, keyboard don't store keystrokes in their memory by default (excluding those bundled with keyloggers). The thing that comes to my mind though is that some keyboards do ...
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1answer
138 views

Physical mechanical examples of “M-of-N” locks?

Arbitrary "M-of-N" secret-sharing protocols are a well-studied topic in cryptography, and are apparently so useful that Bitcoin Script devoted a whole opcode to them. In this blog post, I ...
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When they make physical locks, do they really just make a few variations of the keys and then mix them together and sell? [duplicate]

I always assumed that each lock is unique and can only be opened with the keys it was sold with (or any copies made later from those originals). But the truth seems to be that they just make "a few" ...
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Recreating the Half Coins of Jin-Qua [closed]

In the Asian Saga series by James Clavell, the Struan family gave away the half-coins of Jin-qua: in exchange for a desperately needed loan, the pirate Dirk Struan received 4 halves of 4 coins. The ...
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Strategies to protect SANs in branch offices in risky places

A company has several remote branch offices located in relatively dangerous places, such as Iraq, and I'm looking into strategies to secure the SAN in the event of theft or looting. The data is ...
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What is the physical security (Evil Maid) threat model of a modern hardened laptop?

Why I believe this question is not a duplicate: There are multiple questions dealing with the exploitation of a locked computer on this site, but most of the answers are focused on exploiting a non-...
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Household attack vectors and mitigations [closed]

Hopefully this question won't come across too closely to a which product is best as that is not my intention. I am moving into a larger property and I would like to setup some home security now i'm ...
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Do large companies keep a detailed “company log” book/database? [closed]

In my life, I have spent a lot of time thinking and wondering about many things related to larger businesses, even though I have no direct connection to that world. By "larger", I mean "not just a ...
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What do I do if I catch someone doing a physical pentest? [duplicate]

This question was primarily inspired by this (related) question, but is about the other side of the equation. I'm a security engineer at Medium Sized Company, Inc. We recently hired John for a ...
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Can employees' personal properties be part of the scope? [closed]

Let's assume the customer (target) wants to have a full physical pentest done. (I'm a student and have 0 exp in actual Pentesting and Red Teaming Properties of topic: Cars (in the car park) ...
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How to deal with third parties in physical pentests?

From my previous question, I've seen that a "Permission to Attack" slip is crucial in ANY Penetration Test. However, that question and its answers and comments have only discusses interactions between ...
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What to do if caught in a physical pentest?

I've seen a lot of people talk about how to pentest and how NOT to get caught during engagements but have a hard time finding "How to behave when caught during a Red Team engagement". Red Teams are ...
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134 views

When a closed-source company hires somebody to audit their code, is the auditor forced to do it in the company's office?

Let's say that ACME, Inc. is making closed-source software. It's closed for a reason (they don't want it leaving their building other than in compiled form). Now, they are hiring some company/person ...
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Why are my plastic credit card and activation code sent separately?

Capital One recently sent my plastic credit card by post mail and its activation code by a separate post mail. What security problem does this mitigate? If a rogue element has access to my mail box ...
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External hard drive

It's possible the external hard drives have been compromised in the company I work for. It would be a huge waste of money to replace them all without detection and if the current ones are compromised, ...
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791 views

Is it safe to throw away debit card receipts in the bin?

In relation to this question about credit card receipts, is it safe to just throw away receipts where I have used a debit card? In addition, would it be any more worth while burning/shredding ...
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What is the purpose of the rotating plate in front of the lock?

I am now in Poland and see these everywhere: The plate can rotate freely,when you insert the key, matching the groove, you rotate the key so it is aligned with the lock and then insert the key. What ...
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1answer
689 views

Requiring hardware key at boot-up on normal laptop

I am sure that a question like this already exists and has probably been answered. I just couldn't find any results (probably due to my inability to word my question correctly). We use laptops at ...
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Is it Possible to Prevent a Physcial Attack on Server in Remote Data Center?

I've been using Amazon Web Services to run my Java application. However, due to high costs I'm looking into getting a dedicated server from Hetzner, a company based in Germany, which costs about 10-...
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Mobile phone is picking up 13 bluetooth devices and not sure what they are?

I have a particular problem with a potential security breach. I bought a new device today that connects to my phone via Bluetooth. Nothing strange about that. Surprisingly when I turned Bluetooth on ...
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An advanced adversary is targeting you - now what? - so what? [closed]

Consider the following: An advanced adversary is targeting you. He has the ability to watch most if not all of your network connections and the ones in the neighbourhood. He is sitting on numerous ...
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What steps should I take to ensure there are no unpleasant surprises in a recently purchased home?

After buying a house from another party (i.e. not new construction) what steps should I take to ensure the previous residents have not left behind anything unpleasant for me? I'm not worrying about ...
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1answer
554 views

How to mitigate the new malicious USB cable USBHarpoon (NOT BadUSB) threat in an enterprise? [duplicate]

In this case, the victims may think they are using a generic USB cable, but the PC will recognize the cable as a Human Interface Device, much like it would a mouse or keyboard, giving the attacker ...
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1answer
884 views

Why should I leave a U2F device always plugged in to a computer?

Over at the Yubikey website they mention that the Nano or 5C Nano series is meant to be always inserted into a computer. I've seen some other sites mention the Nano is good for servers. But why would ...
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2answers
115 views

Security and thumb drive [duplicate]

If my laptop is locked, can a thumb drive be able to still infect my computer, or create a backdoor, or any other security risk if it's plugged into it. If so what are some example
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1answer
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Does the number of fingerprints we leave represent a security threat to the banking system?

A number of major banks are allowing users to log in to their bank accounts with only fingerprints. It was occurring to me, though: how many fingerprints does the average person leave per day? How ...
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1answer
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What is the fastest way to brute force a hardware code

Where I live, there is a keypad with numbers from 0 to 9 and two letters, A and B. Using it I noticed that the code was checked on the last 5 things entered. If I were to try every code on the keypad,...
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Liquid security scenario

I'm a part of a small team of undergraduate developers taking a course on developing Arduino and Raspberry Pi applications with a focus on the Internet of Things. Our current task is to imagine, ...
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269 views

Is there any way somebody could hack into my brain?

Before you close this, I'm actually serious. Could somebody, in theory, have conked me out behind a Chiles, cirucular-sawed my brain out, and plugged me up to a machine capable of brain simulation? ...
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Defence methods against tailgating

This is a follow-up question to this one: Roles to play when tailgaiting into a residential building How do you protect yourself or your company against tailgaters? What is the best answer when you ...
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4answers
132 views

Assessing risks Physical security of devices

I have several devices and flash drives that need to be secured. I haven't been able to find any good physical security measures to protect those devices. What are my options? What do you use, if ...
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How resistant are barcodes and QR-codes against attempts to change stored data?

Assume we want to protect a document against manipulating and forging. So, we encode some sensitive information of the document and store it in a QR-code inserted in the document. Can we be sure that ...

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