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e: i'm retarded
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Sep 8, 2016 12:40
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hackbunny posted:I don't understand one thing: what are minutiae? how can two scanners pick the same set (or close enough I guess) of print features to translate into minutiae? as i understood it, they're a bunch of point+direction vectors so since a fingerprint is a bunch of curves following each other around, if you pick near enough points, theyll have similar directions & thus if enough points+directions are similar (for some threshold), theyre a match
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Sep 8, 2016 12:45
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I have difficulty visualizing it
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Sep 8, 2016 13:45
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hackbunny posted:I have difficulty visualizing it quote:When stored digitally, fingerprints are nearly _always_ stored as a simple series of minutiae points which are just sets of 3 numbers: x/y coordinates and 'theta', which represents the angle, e.g. which direction that particular feature is facing. Some new systems include a fourth value for curvature' but almost nobody is using this.
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Sep 8, 2016 13:48
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hackbunny posted:I have difficulty visualizing it some additional material here: http://www.intechopen.com/books/biometrics/minutiae-based-fingerprint-extraction-and-recognition
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Sep 8, 2016 13:52
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OSI bean dip posted:everything is plaintext http you don't wrap a DH session in https, the whole point is that you're able to do it in the clear on an untrusted channel. their implementation is probably poo poo, though BangersInMyKnickers fucked around with this message at 13:59 on Sep 8, 2016 |
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Sep 8, 2016 13:54
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surebet posted:
lol lanmanager
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Sep 8, 2016 13:56
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Westie posted:I think I know the David Duke they're referring to in CubeiTz such an expert at keeping his stuff secure that none of his published work has leaked out into the community
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Sep 8, 2016 14:00
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honestly I'm kinda surprised that there isn't a fingerprint image stored as well as the mathematical description, some lawyer must have tried a truthiness-based 'But we can't actually see a comparison of the original print and the crime scene print?' thing where the numbers could be wrong  I mean you could reduce a suspect to a big and very accurate list of phrenology-style measurements in a vector image, but a mugshot is still a mugshot.
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Sep 8, 2016 14:02
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cinci zoo sniper posted:https://forums.somethingawful.com/showthread.php?threadid=3712267&pagenumber=262&perpage=40#post450622929 yes, but, what if a different scanner picks a completely different set of points? like, take this print:  what stops a different scanner from picking samples from entirely different coordinates? how will you match minutiae if they form completely different constellations? or this image  is misleading me?
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Sep 8, 2016 14:09
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Have we talked about the mubix login credentials thing yet? http://arstechnica.com/security/2016/09/stealing-login-credentials-from-a-locked-pc-or-mac-just-got-easier/ I swear to god, every day convinces me that movie hackers are more right than they ever knew
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Sep 8, 2016 14:10
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fins posted:some additional material here: yes, this was helpful. alright, they aren't picked randomly quote:The two most prominent local ridge characteristics are: 1) ridge ending and, 2) ridge bifurcation. A ridge ending is defined as the point where a ridge ends abruptly. A ridge bifurcation is defined as the point where a ridge forks or diverges into branch ridges. Collectively, these features are called minutiae. they are specific features of fingerprint ridges. it's expected that different scanners will pick roughly the same "constellations"
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Sep 8, 2016 14:13
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EVGA Longoria posted:Have we talked about the mubix login credentials thing yet? http://arstechnica.com/security/2016/09/stealing-login-credentials-from-a-locked-pc-or-mac-just-got-easier/ now all he needs to do is emulate a usb keyboard too and automatically punch in the cracked password
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Sep 8, 2016 14:19
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http://blog.cyren.com/articles/windows-media-player-drm-feature-used-for-malware-delivery-again.htmlquote:Movie and TV watchers who download pirated content have long been warned of the potential for malware that might accompany their chosen media. Now use is again being made of Digital Rights Management (DRM) functionality designed to prevent piracy to distribute malware.
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Sep 8, 2016 14:29
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hackbunny posted:yes, this was helpful. alright, they aren't picked randomly yeah i was gonna say from my understanding the idea is the points are picked to maximally describe the fingerprint itself rather than just "computer saw a line here"
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Sep 8, 2016 14:43
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fins posted:http://blog.cyren.com/articles/windows-media-player-drm-feature-used-for-malware-delivery-again.html did windows media player ever not deliver malware? like i got one of the only viruses i ever got back when i was an awkward teen trying to score porn that opened in windows media player and tried to acquire rights and then virus
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Sep 8, 2016 14:44
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its not a new issue and it requires the user to install the malware manually. its the same as if you clicked a link to funspyware.ru and clicked a download now link and ran what it downloaded.
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Sep 8, 2016 14:58
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yeah a big yawn. the drm url thing has always been used for malware
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Sep 8, 2016 15:02
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EVGA Longoria posted:Have we talked about the mubix login credentials thing yet? http://arstechnica.com/security/2016/09/stealing-login-credentials-from-a-locked-pc-or-mac-just-got-easier/ ntlmao
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Sep 8, 2016 15:10
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Bhodi posted:yep, 100℅ shitshow and of course jeff is still there and in fact got promoted twice since the start of it did you use a "care of" symbol instead of a percent sign? how does that even happen
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Sep 8, 2016 15:18
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YO MAMA HEAD posted:did you use a "care of" symbol instead of a percent sign? how does that even happen loving lol
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Sep 8, 2016 15:19
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I assume it's a different David Duke, but who knows. ate shit on live tv fucked around with this message at 15:27 on Sep 8, 2016 |
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Sep 8, 2016 15:24
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NoneMoreNegative posted:honestly I'm kinda surprised that there isn't a fingerprint image stored as well as the mathematical description, some lawyer must have tried a truthiness-based 'But we can't actually see a comparison of the original print and the crime scene print?' thing where the numbers could be wrong Forensic's like fingerprints, video, photos, even DNA have long been the subject of attack by defense attorney's . It doesn't help that fingerprints were notoriously unreliable such that you could get a "fingerprinting expert" to match pretty much any fingerprint to any person's finger you wanted to. I assume it's gotten better but I really don't think fingerprint's are a slam dunk for a prosecutor.
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Sep 8, 2016 15:32
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YO MAMA HEAD posted:did you use a "care of" symbol instead of a percent sign? how does that even happen didn't even notice until you pointed it out, lmao
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Sep 8, 2016 15:32
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Parallel Paraplegic posted:did windows media player ever not deliver malware? like i got one of the only viruses i ever got back when i was an awkward teen trying to score porn that opened in windows media player and tried to acquire rights and then virus pretty much every person I've ever seen install malware on their mac was because they clicked an INSTALL ADOBE FLASH TO VIEW THIS CONTENT popup and they just double-clicked the hyper-generic installer icon
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Sep 8, 2016 15:35
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Bhodi posted:phone postin', blame the android and my terrible eyesight i'm still not sure how this answers the "how did this happen?" question
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Sep 8, 2016 15:44
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100↉ weird
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Sep 8, 2016 15:49
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ultramiraculous posted:i'm still not sure how this answers the "how did this happen?" question 
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Sep 8, 2016 15:56
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Parallel Paraplegic posted:did windows media player ever not deliver malware? like i got one of the only viruses i ever got back when i was an awkward teen trying to score porn that opened in windows media player and tried to acquire rights and then virus this is why i always configure wmp to never try to acquire rights or additional data about files from the internet. if the file wont play without getting some mysterious extra data from the internet, i need to scrub that poo poo immediately.
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Sep 8, 2016 16:15
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hackbunny posted:I don't understand one thing: what are minutiae? how can two scanners pick the same set (or close enough I guess) of print features to translate into minutiae? The book has it right, they're specific kinds of formations like ridge endings, ridge bifurcations, "islands", the swirly bit in the middle (called a 'whorl'), etc. There's less than a dozen kinds of minutiae but scanners are all very good at picking them up. It _is_ the case that sometimes different scanners will produce differing results, but usually the bulk of the points are the same, and since the entire matching process is inherently tolerant of minor differences, it isn't really an issue.
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Sep 8, 2016 16:32
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NoneMoreNegative posted:honestly I'm kinda surprised that there isn't a fingerprint image stored as well as the mathematical description, some lawyer must have tried a truthiness-based 'But we can't actually see a comparison of the original print and the crime scene print?' thing where the numbers could be wrong As far as I know, fingerprints used as evidence of a crime still require manual comparison by a human being. You could search AFIS for matching prints using a latent print found at a crime scene and non-image copy stored in the database, but if you get a match you're going to end up arresting the dude and re-fingerprinting him with ink and paper to do the verification. Also, governments aren't necessarily doing biometrics "right", in many cases we know they're storing a full image. See also: OPM leak
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Sep 8, 2016 16:35
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^^ah that makes more sense I read this on my teabreak, interesting stuff http://issues.org/20-1/mnookin/
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Sep 8, 2016 16:43
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i didn't realise amazon didn't notify you of review comments by default https://www.amazon.co.uk/review/R361O173FGIW4O/ i guess i should get ready to film if they insist on their poo poo being any good
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Sep 8, 2016 18:12
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Wiggly Wayne DDS posted:i didn't realise amazon didn't notify you of review comments by default lmao
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Sep 8, 2016 18:31
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https://motherboard.vice.com/read/fbi-arrests-two-alleged-members-of-group-that-hacked-the-cia-director Two more CWA arrests - some sad opsec fails including chat logs and accessing twitter accounts using parents internet connection and a really disappointing description of goatse
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Sep 8, 2016 19:09
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Westie posted:I think I know the David Duke they're referring to in CubeiTz yes, i've just checked, he's the dad of someone i knew from school oh god this is hilarious
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Sep 8, 2016 20:39
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Westie posted:yes, i've just checked, he's the dad of someone i knew from school lmao
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Sep 8, 2016 21:57
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i guess it goes without saying that they are in fact not an internationally renowned infosec expert?
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Sep 8, 2016 22:06
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Westie posted:yes, i've just checked, he's the dad of someone i knew from school dadsec
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Sep 8, 2016 22:09
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YeOldeButchere posted:dadsec dadsec joke hey Phil, can you make me an account on the Dev server? Phil: *taps you on the head* now you're an account on the Dev server! 
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Sep 8, 2016 22:17
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