IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [printers]

56 questions
47
votes
5 answers

Is it theoretically possible to hack printer using scanner tray?

If the scanner tray is considered as an interface, and it accepts input (basically it is its main functionality), could it be hacked using malicious code written on a piece of paper?
MrSnowMan
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40
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4 answers

How to protect printers from being hacked

Recently it got to my attention that someone has hacked around 50,000 printers and used them to print the message they wanted to. (link) As someone who doesn't have a lot of knowledge about networks or hacking, what would be the steps to take to…
aMJay
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15
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1 answer

New social engineering tactic that uses printer serial numbers?

We have been getting a new kind of scammer-esque call every couple weeks here at the office (I work at an enterprise web application development company). Basically, the flow of events is this: Caller has spoofed their caller-ID to have an…
Omar Himada
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11
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1 answer

If I sell my printer, can the last printed pages be recovered? And how can I wipe it?

I have a Brother 5470-DW Printer. I want to sell it but wanted to make sure all the last prints can't be recovered. If I sold my printer could the last pages printed be recovered? How can I wipe all the last printed pages? Wipe the memory? How would…
Connect4
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10
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1 answer

Printer Steganography/Watermarking

I am referring to the yellow dots which are printed automatically by laser printers. They encode information such as the time the document is printed as well as the serial number. There appears to be quite little information on this subject…
limbenjamin
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9
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1 answer

Check whether a printer keeps a history of printed documents

Are there resources to determine whether a consumer grade printer has some internal memory that stores the contents of printed documents, and/or information how to securely delete any such memory?
Will M
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8
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1 answer

Is it possible to emulate real network printer i.e. to run some actual firmware in VM?

I've got to the section related to network printers exploitation while going through one security course. Under "network printer" I understand standalone devices with a dedicated ethernet\wireless link, listening on port 9100, with some…
tis
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8
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3 answers

How can I encrypt my print jobs?

I often print confidential documents over a large intranet to various printers based on where I am in the building. However, since the building is so large, it is highly likely there is a malicious device connected somewhere in the network, and I…
oldmud0
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7
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1 answer

Samba printer usernames and passwords , security problem

Password leaks , printing from Linux client to windows based print server When authenticating Linux users for using a windows share printer on their machine, the windows domain user-name and password of the user has to be entered in the add new…
Ijaz Ahmad
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6
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2 answers

How to handle decomissioned/donated/RMAed printers?

Printers, nowadays, almost always include some form of non-volatile storage that keep tracks of pretty much everything that went through the device. In the case of larger, "departmental" system that often combine print/scan/fax functionality, that…
Stephane
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6
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2 answers

What issues exist in generating a signed, paper-based PGP message stored by a hostile organisation?

I have recently been the victim of having my medical record tampered with by the organisation holding it. Under state law I have a legal right to submit information to be included in my medical record, but I cannot request any information to be…
daniel
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5
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1 answer

Standard to represent digital signature on paper

Users are making a deal using the website. Website generated PDF file (something like contract or report). Users perform digital signing of this file (analogous to hand-written signature on paper contract). They use government-issued RSA…
vbezhenar
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4
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3 answers

Segregating a Printer in my Enterprise Network

I have a EAP-TLS network at home which I've managed for some time now. I just got a new Brother HL-5470 printer so I can finally print things at home, which is really nice. The only problem is that printers are notoriously good at being huge…
Naftuli Kay
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4
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3 answers

How do I secure my networked printers?

I've been reading a lot about how network printers can be a big security breach, but precious little about what to do about it. I have 2 Canon printers, a Pro-100 and a MG6821. Neither one requires the network password when you set them up on the…
user48053
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4
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1 answer

Defeating identifying information that printers hide in printed documents

It's pretty widely known (well, I think it's widely known) that printer manufacturers, in cooperation with certain governments, embed various bits of information (serial numbers, dates, etc.) in printed documents that can be used to identify the…
Jason C
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