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Results tagged with firmware
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user 54284
82
votes
Do multiple routers increase security?
It may look good on paper, but it's a terrible idea.
You assume that the only way to get in your PC is from the first hop, the router closer to you, and that to hack one device, the previous one shoul …
- 55.5k
1
vote
Is there any way to validate the firmware in a USB flash drive?
Yes, there is, but is complex and time-consuming:
Open the case
Use hardware probes to the pins of the NAND chip storing the firmware
Take a dump of the firmware
Use a disassembler or debugger to check … the firmware
In the end, it depends entirely on your reverse-engineering skills. …
- 55.5k
6
votes
Safe to download router firmware over unencrypted HTTP?
Probably there's a digital signature on the firmware and a key on the router. If the update file is tampered somehow, the signature verification will fail and the router will reject the update. …
- 55.5k
0
votes
Accepted
Will secure boot prevent any non signed firmware from running?
USB drive firmware runs on the USB drive, not on the computer. … If you are confusing "firmware" and "driver", SecureBoot can't do anything at all (see above), and the OS is the one that can have mechanisms to protect itself from the installation of rogue firmware. …
- 55.5k
6
votes
What are the best practices to implement secured remote firmware updates over-the-air (OTA)?
Put the public key on the original firmware of the shipped devices. This is the initial release. … I've seen a system that creates two partitions on the storage, and use one for the current firmware and another for updates. …
- 55.5k
4
votes
Accepted
Ransomware aversion and identification techniques
Detection? Don't count on it.
Watching for changed files may not help. Some malware families reads the file in memory, encrypts it and writes a new file, and deletes the original. This will not trip …
- 55.5k
168
votes
Accepted
Buying a "Used" Router
Short answer: do a factory reset, update the firmware, and you are good to go.
The risk is very low, bordering zero. … The previous owner may have installed a custom firmware or changed its configuration, but a firmware upgrade and factory reset is enough to take care of almost every change. …
- 55.5k
0
votes
Does the WP(Write Protect) pin of a USB flash memory controller prevent tampering with its f...
No, the Write Protection pin will not protect the USB drive from being written into, and is not there to protect the firmware from being rewritten. … Second, the firmware uses another channel. You don't just plug in the drive and rewrite a file. You need special software to access the firmware, dump it, edit it, and flash it back. …
- 55.5k
2
votes
How to Prevent Copying of Device Source Code in Manufacturing
One may etch the board and put the passives, other gets the bare flash ships and flashes the firmware, the next one would solder microcontrollers already with the firmware. …
- 55.5k
0
votes
How common are firmware infections?
Downloading every single firmware image from a single device is a monumental task, imagine downloading all firmware images for all devices on all manufacturers. … As MeckMK1 said, there's much easier ways to compromise a device that don't need firmware hacking. …
- 55.5k