The physical components of an IT system.

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6
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2answers
58 views

Using smart cards for email encryption and SSH

Suppose I have a small organization, every user has a recent Macbook Pro, can buy a ~$25 smart card reader on Amazon, and I want to use keypairs where the private keys are on personal smartcards to do ...
3
votes
1answer
70 views

“Memory Sinkhole” attack and virtual machines?

Recently a design flaw in some Intel X86 processors was revealed at Blackhat. The flaw enables malicious code to gain access to SMM. The flaw can be exploited by an attacker with administrator ...
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0answers
10 views

What is “authorised hardware” [migrated]

There's been a lot of buzz about the Windows 10 end user licence agreement. The phase in question being We may automatically check your version of the software and download software updates or ...
0
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0answers
27 views

Data Integrity - Removing an USB external disk without properly disconnecting it [migrated]

What are the integrity related issues I might have by simply removing an USB external hard disk from my computer, without logically disconnecting it (e.g. via Windows desktop bar icon)? Is the ...
9
votes
2answers
116 views

How to know whether a RAM module is vulnerable to rowhammer before buying?

I'd like to know (or at least perform some reasonable guess) if a RAM is vulnerable to rowhammer attack. I haven't found any list of vulnerable or secure RAM modules. I've seen some general rules ...
3
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0answers
38 views

What can virtualisation infrastructure operators do about ring 0 SMM exploits?

Just saw this new privilege escalation from Ring 0 to SMM. Say I am operating a small VM/cloud infrastructure for internal people to run whatever they like, is there any way to prevent this ...
1
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3answers
97 views

how to protect my data from malware/spyware that infected my BIOS?

we all know that some countries do their best to spy on their citizens and the citizen of other countries and that countries maybe have specialized spying agencies wither they are known or not, and, ...
0
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0answers
88 views

Wifi Card Removed, computer still shows data packets sent/received [migrated]

I have purposely removed the wifi card on my macbook in order to work offline securely. The "Activity Monitor" still shows packets are being sent/received. How is this possible? Of particular ...
3
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1answer
48 views

Freshness for SGX enclaves

Future Intel processors will support SGX (Software Guard Extensions), which allows running security-critical software on your processor in a way that is isolated from all the other code. The hardware ...
1
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1answer
96 views

Can data be tampered with after expert clones a drive?

Introduction 3 computers were sealed and taken from a persons apartment. Investigators invited him to unseal the PCs, they were intact and they started the cloning process, however the hashes were ...
1
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1answer
69 views

The use of SHA-1 in a cyber forensic

Let's say a hard disk (A) is retrieved from a system to make a clone of it on hard disk (B) and use this clone for a forensic investigation. Is SHA-1 secure enough to make sure that no other ...
4
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1answer
44 views

do i need to use the cipher command with a newer SSD to erase files?

I've used Eraser in the past, and recently became aware of the cipher command in Windows 8. Specifically, with the /w flag: /w removes data from portions of the volume it can access and have not ...
3
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1answer
43 views

Securing the bootloader

When using full disk encryption the bootloader is not encrypted thus allowing attacks like the Evil Maid. My question is how can I secure myself from this? Can I encrypt the drive or store it in a ...
35
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2answers
4k views

How can it be easy to write but “impossible” to extract the private key from a crypto token?

A number of crypto-dongles make the claim that it is impossible to extract the stored private key once written. Yubico: The YubiKey AES Key information can never be extracted from a YubiKey ...
2
votes
1answer
46 views

Is it possible to build completely verifiable hardware?

Reproducible builds like they are used for Bitcoin, Tor or the Debian package repository aim at making sure that the binaries you install exactly equate the source code that they are supposed to be ...
0
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0answers
28 views

Is the SanDisk ULLtraDIMM secure after power-down?

I found an interesting product last night called the SanDisk ULLtradDimm SSD (product page), which essentially claims drastic performance gains by plugging an SSD into a standard DDR3 memory channel. ...
2
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1answer
24 views

Is there an implementation of a trust on software on a host?

What I'm after is a trust that is established between the hardware and the software intended to use that hardware. This may require a certificate "burned in" to a specialized chip. The open SSL may ...
2
votes
1answer
120 views

Is it possible to do Public Private Key Encryption on a chip (hardware)?

Does a chip exist which will take input data and output encrypted data in a public private key scheme, where the public key is on the chip and the private key is located remotely? The ultimate goal ...
1
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1answer
42 views

Identifying USB Device Anomalies..? [closed]

I have a laptop with 4 USB ports, and I have an external 4 port splitter that I purchased off amazon. Plugged into that is an external USB audio card. The audio card has a line-in port and an audio ...
0
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0answers
30 views

Can Bluetooth be man in the middle'd at the L2CAP layer?

Bluetooth HID devices can be man in the middle'd with two bluetooth dongles and this code http://ossmann.com/shmoo-2010/ Is this technique limited to just HID profile bluetooth devices or could this ...
1
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0answers
32 views

Potential hazards for reusing an X.509 private key for multiple services?

One thing I've been thinking about for a while is using a X.509 private key stored in a hardware security device (think YubiKey et al) on a one-per-machine basis. Theoretically, it should be possible ...
0
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2answers
119 views

How to make data in hard disk unrecoverable on linux [duplicate]

I need to wipe completely the data on my hard disk so it's unrecoverable. I'm actually using Linux, i have seen this command on the web, but I don't know if its secure. shred -zvn 35 /dev/sdb
1
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0answers
39 views

Is there hardware which can prove that data was not read? [closed]

I am looking for information on hardware. Is it possible for a hardware device to prove that some data was not read? If so, how does work? I read something about a quantum machine using a polarized ...
14
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5answers
3k views

Are consumer-grade routers any more or less vulnerable? [closed]

I apologize if this is an obvious question, I'm not very familiar with hardware. I am planning on hosting a few personal websites from my home, but I'm concerned about my security. I'm using a fairly ...
0
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2answers
154 views

ENCASE Forensic: Detect if someone ran CCleaner or CleanUp software

I have Encase. and I'd like to know where can I find if someone ran CCleaner Or CleanUp software to erase evidence.
1
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1answer
105 views

Is there a backdoor in the hardware of our smartphones?

I don't know for you but I always felt like Android especially is not safe. Is somebody - the government or other - able to listen to my microphone, or access my hard drive remotely ? I'm wondering ...
4
votes
1answer
70 views

Should I wipe a brand new Machine and HDD ?

So I am buying a brand new machine and a HDD separate, when I buy this new HDD should I wipe it before I install it ? What necessary steps should I take to make sure it's pretty much clean of any ...
1
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1answer
37 views

Can one trace downloads in storage unit? [closed]

Does My Passport WD keep a history of downloads, transfers etc? In other words can user A detect user B's activity? Or can it just see the content of the storage unit?
2
votes
1answer
145 views

What comprises the AIS-31 standard for TRNGs?

I'm researching how my smart card's chipset generates random numbers. According to a source in forums the YubiKey NEO is based on the A700x chipset from NXP. The page for the chipset indicates that ...
3
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1answer
170 views

HSM maintenance

I have a HSM that is an asset within a information security management system and the help desk team tells me that the device is displaying a critical failure alert. So my questions are: Must I ...
6
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2answers
738 views

What are the differences between TPM and HSM?

TPM (Trusted Platform Module) and HSM (Hardware Security Module) are considered as cryptoprocessor, but what are the differences exactly? Does one of them have more advantages than another?
4
votes
1answer
184 views

Is there any protection against malicious devices on a CAN bus?

CAN (controller area network) is a bus used in all modern cars. You can read a lot of the cars information over this bus and I think (but I'm not too sure about this) that some critical control ...
9
votes
1answer
115 views

How to make sure that the cryptographic hardware accelerator is being used in am335x?

I want to use the AES hardware accelerator in am335x. I was able to generate the cryptodev.ko and cryptosoft.ko drivers. From my application program I am making use of openssl apis in CBC mode, and I ...
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0answers
106 views

how many sha1 hashes per time on current hardware [closed]

How many sha1 hashes per second can current hardware (say a 500$ gpu) compute, when the input is 256 byte long? (or any other length). The question behind is how long (or how costly) is it to mount a ...
3
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0answers
44 views

Is malware or screen capture possible with iMac as external display?

If using a foreign iMac as an external display (through the Thunderbolt to Thunderbolt, or Mini DisplayPort to Mini DisplayPort cable, and Command+F2 on the iMac, as per iMac Target Display Mode FAQ), ...
4
votes
3answers
205 views

Disable USB keyboard pluggability on MacBook

I'm concerned about USB devices being physically attached to my MacBook laptop when I am about to unlock my computer or while my computer is unlocked. My threat model involves an attacker who is ...
2
votes
3answers
144 views

What use does a BIOS/EFI password have?

I have become quite a password-obsessed individual. I password-protect my HDDs, my files, and now even the BIOS/EFI on the various systems I own. But I have discovered that if you forget your BIOS ...
2
votes
1answer
207 views

PGP key on smart card: why do I need a “secret key” on disk?

I have a YubiKey NEO on which I have the OpenPGP applet and I have a PGP key installed. I work on 3 different computers and I initialized the card on computer bob. I'm now at computer rob. Someone ...
6
votes
1answer
90 views

Software can be audited, is there an equivalent for hardware?

In software, code auditing can be used as a mean to gain trust into a software. Of course closed, proprietary software would complicate this, and require to do reverse engineering. Anyway there seems ...
2
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0answers
70 views

How are Intel/Amd Microcode Issues Delivered? Is it possible to block them?

After reading this article, I am really curious as to how, exactly processor microcode updates from Intel or AMD are issued. In what way is the data transmitted? Is it possibly to 'firewall' these ...
7
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1answer
102 views

Anonymity of sneakernet: identifiable information on removable storage

Alice, an anonymous informant, would like to transmit digital documents to Bob while maintaining her anonymity. For whatever reason, she chooses to copy the documents to some kind of physical ...
2
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0answers
144 views

Performing an airport scan on my Mac for available WiFi networks pulls up multiple SSID with different mac address. What's going on?

I performed the following command to search for available WiFi networks in my apartment complex: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport scan | grep OBC I ...
4
votes
1answer
115 views

Realistic: Exploiting a computer on BIOS/ hardware level in less than an hour? (Infinite preparation time)

I wonder how hard it it to infect a laptop or netbook in 60 minutes or less in a way the victim cannot easily clean their machine by wiping hard disk drives. Let's assume the following: The ...
2
votes
3answers
98 views

What can manufactures of hardware do to prevent attacks on the firmware?

Given the revelations since The Equation Group was discovered. As well as that it is possible to not guarantee removal of a rootkit even with a nuke from high orbit. What properties of a harddrive ...
2
votes
1answer
103 views

Autopsy/SleuthKit in the courthouse? [closed]

I am studying digital forensics and have been working with both AccessData's FTK and Autopsy to analyze disks for different assignments. I keep hearing that Autopsy findings should not be admitted in ...
3
votes
1answer
682 views

Intel SGX and MSRs - what do developers need to know?

Intel SGX is an intriguing new technology that will ship as part of upcoming Intel processors. It is designed to enable running software in a secure enclave. Code running in the enclave will be ...
3
votes
1answer
140 views

Ring Oscillator: True Random Number Generator (TRNG) vs Physically Unclonable Function (PUF)

Ring oscillators can be used in hardware true random number generators (TRNG), and also in physically unclonable functions (PUFs). The designs seem fairly similar: TRNG based on ring oscillators: ...
1
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1answer
146 views

Spying on insulated cables (electromagnetic/induction field)

I hope this is the right forum to ask this question. If not, please tell me where to go. From my understanding most cables have an electromagnetic field around them when data passes through them and ...
2
votes
1answer
357 views

How to minimize the risk posed by Intel AMT/ME's “ring -3 exploits”?

This question is about how to minimize the risk posed by Intel AMT/ME's ring -3 exploits? I'm looking for advice on common strategies and practices. Here is my current situation. I am parking my ...
0
votes
1answer
97 views

What's the best, most unique (and uneditable) hardware id or key for each computer? [closed]

I'm a C# programmer and I'm looking for the best way to "know" what hardware is running my software. What is the best uneditable and unique "hardware id" in each computer?